How fast can a RX-8 go 0-60 with a greddy turbo kit on?

And what about a 1/4 mile?


Anybody has the times from there modified RX-8.

For reference and comparison....here is what I got stock. Note: my car did have some added weight in the trunk with subs and sub box. This has since been taken care of and I need to rerun for more accurate times.

1/4 mile: 16.1 sec @ 89 mph top speed

I dont know how much boost or mods done, but I have seen some videos on YouTube of Greddy RX8s doing 13.1 and 13.6.

How fast can a RX-8 go 0-60 with a greddy turbo kit on?

And what about a 1/4 mile?


Anybody has the times from there modified RX-8.

For reference and comparison....here is what I got stock. Note: my car did have some added weight in the trunk with subs and sub box. This has since been taken care of and I need to rerun for more accurate times.

1/4 mile: 16.1 sec @ 89 mph top speed


Thats pretty sad, and its because these cars really make like 210 flywheel hp stock, which I dyno'd stock at 170 rwhp, after some upgrades, listed under here I make 187 rwhp without the underdrive pulley and I ran a 15.4 92.5 mph, but that is with a low rpm start, could probably get 14.7-14.8 if it didnt wheel hop so bad. I saw the black rx-8 with the greddy on you tube at 13.1.
Rx-8 minus turbo = granny's caddy given you a spankin:scared:

anyone have a link to the 13.1? i've serached the tube for it already

He might have removed them, I cant find them anymore either. He used to have like 5 videos, dyno's and drag's, he ran 13.1's-13.9's, 13.9 I think he said he missed a gear. He made I believe 275 rwhp.

thats adrian-1, who posted a dyno sheet of 265 whp. we now have people who have done 290-310 on the greddy kit, and of course the bigger kits with 330+

installing my turbo soon so was very curious what 1/4 times were expected

you will probalby in the low 13's or very high 12's depending on your suspension, clutch, tires, and other mods you have, and obviously how good of a dragger you are. People have pushed STOCK 8's to 14.6's, and run high 13's on a 55-shot of nitrous.

ty for hte response! lets hope i'll be able to hit those times

you will probalby in the low 13's or very high 12's depending on your suspension, clutch, tires, and other mods you have, and obviously how good of a dragger you are. People have pushed STOCK 8's to 14.6's, and run high 13's on a 55-shot of nitrous.


I would love to know what people do to run a 14.6 with a stock Rx-8? Must be running 100 octane and on a cold day. Hot and muggy 91 degrees with 93 on a florida night you cant get the car even close to that.

I would love to know what people do to run a 14.6 with a stock Rx-8? Must be running 100 octane and on a cold day. Hot and muggy 91 degrees with 93 on a florida night you cant get the car even close to that.

Polak did better than a 14.6 at the track with a stock 8. search his thread.

i ran a 14.8 with my sub in the trunk, first time at the track as well.

Polak did better than a 14.6 at the track with a stock 8. search his thread.

I did read what Polak did to get his time and I appreciate the referral to his thread.

He launched at 8000 and just rode the clutch out, he said after that he could smell his clutch so that was his last run. I am going to go to the track one more time and give that a try to see the results. I'm glad its capable of running good times, I guess you just have to know how to extract it out of this car. My first rotary and high revver so I was just trying to launch like my 5.0 mustang or my 65 nova and it don't work so well on a car that's setup more like a motorcycle.
When I had my Honda CBR 600 I used to launch just like Polak did to get his 14.598.
I dyno'd with 19 more hp than stock with my upgrades, so maybe I can get close to 14.0-14.2

^^ I'll wish you the best of luck on that. but your hopes are shooting a little high. with sr motorsports intake, sr underdrive pulleys, and RP highflow midpipe, best i pulled was 14.63. thats with a 2.16 60' time. which brings the question, whats the best 60' times anyones gotten out of an N/A 8? i always spin like crazy or wheel hop badly. bad enough one time it kicked my ABS light and my park brake light on. they wouldn't go off until i pulled the battery cable.

Well all wish we would've done our homework before we bought one...

Well I have raced many cars on the street from a roll, like a brand new with the temp tag Acura TL-S which runs a 14.2 in stock form, I pulled on him from a 40 mph roll, and I raced a charger hemi from a roll and he pulled me but not all that bad, they run a 13.8, so I know my car is capable of around a 14.2 but everything depends on a good launch. If you ran a 14.6 with terrible wheel hop, you would think you could get 14.0-14.3 with a perfect launch. I am going to the track this thursday and I will try Polak's method of a 8000 rpm clutch ride run and I will let you guys know the results.

And I am glad I didnt reasearch my car more before I bought it. If I did I would have turned myself away from it because of the quarter mile times, then I would have missed out on on of the best driving, handling and looking cars I've ever owned, and I've owned 19 cars and a Honda CBR crotch rocket in my 14 years of driving. This is the first car that I've owned that I want to pay it off and keep it... and put a turbo on it of course. Looking at ordering PTP in a week!

that 14.6 was with a perfect launch. it was the rest of 'em that spun and wheel hop'd so badly. and as for the 8k clutch ride, i'm out to have fun, not destroy my car. and i knew the 8 wasn't fast, but i'd still buy it again if given the choice.

i got mine to 2seconds, but then again, I was in a jet..........what was the question?

i got mine to 2seconds, but then again, I was in a jet..........what was the question?

lol... alright, so I've never seen anybody post a 12 second slip, or even say they made a 12 second pass with any level of modding on a Renesis.
The 20b guys have proof of putting down some impressive passes, but not anybody with a 13b-msp. I'm not talking about G-tech runs either.

I gotta throw this out there... with all the cash you guys pay for very elaborate and expensive turbo setups, how in the hell can you NOT expect the manufacturers of these kits to give some REAL 1/4 mile times to back up their products. Don't you think it's ridiculous? Ya'll are some VERY trusting people. You should tell them to crumple up the nearly worthless dyno sheets and go prove what they sell.

lol... alright, so I've never seen anybody post a 12 second slip, or even say they made a 12 second pass with any level of modding on a Renesis.
The 20b guys have proof of putting down some impressive passes, but not anybody with a 13b-msp. I'm not talking about G-tech runs either.

I gotta throw this out there... with all the cash you guys pay for very elaborate and expensive turbo setups, how in the hell can you NOT expect the manufacturers of these kits to give some REAL 1/4 mile times to back up their products. Don't you think it's ridiculous? Ya'll are some VERY trusting people. You should tell them to crumple up the nearly worthless dyno sheets and go prove what they sell.

you must be new here.


for 99% of us, if we gave a rats ass about 400m times we would have bought a brick on wheels with an LS block.

I actually do give a crap about the 1/4 mile time, and I bought an rx8, why? because I was drunk and I don't know the spec or even the gas milage of the car I just bought, FYI, I don't even know how I wounded up in this forum

all that aside, I have 10 speeding tickets in this car, so how fast do you guys want?

As most of you know i am as often as possible out on the street with my G-Teck or on my RotoTest to try get some more hp out of my RX-8. Best time this year with the following mods, complete 2.5" Ferita exhaust,stock frontpipe no header, my 4" cold air inlet with Simota filter Shell V-Power 99, Motul oils, NGK BUR 9EQP plugs,pills mods and not to forget 45 000 km of hard driving is 60ft 2.27s and 14.42s-98.5 mph. This is with Hankook 235/35-18" street tires. My Bridgestone R tires is worth 0.2s if i heat them up! Hopefully i will achieve a 14.0-14.10s time after the mapping and with R tires. I always launch at 6-7000 rpm with the R tires, but sometimes the clutch smell a little bit!

/Lasse

lol... alright, so I've never seen anybody post a 12 second slip, or even say they made a 12 second pass with any level of modding on a Renesis.
The 20b guys have proof of putting down some impressive passes, but not anybody with a 13b-msp. I'm not talking about G-tech runs either.

I gotta throw this out there... with all the cash you guys pay for very elaborate and expensive turbo setups, how in the hell can you NOT expect the manufacturers of these kits to give some REAL 1/4 mile times to back up their products. Don't you think it's ridiculous? Ya'll are some VERY trusting people. You should tell them to crumple up the nearly worthless dyno sheets and go prove what they sell.

Not too many people take their rx-8 to the 1/4 mile they mostly goto the track. But one guy brought his there a lot and posted videos on youtube, he has the lower end greddy making 271 rwhp, he shows a dyno on one video then in the 1/4 mile he ran a 13.10, shows his slip too. Well it doesn't take a whole lot of intelligence to predict that if he got a 13.10 with 271 then the kit making 325-341 rwhp will be well into the 12's.

Also 1/4 mile depends on very many circumastances, driver, atmosphere, traction, how you launch, and this car isnt really designed to run quarter mile times with the very high rev and most hp being high in the revs. It's designed to run on a track. You would have to change a lot to make it into a 1/4 mile car, but then it will probably have to handle like a straightline car like the mustang... no thanks.

My friend bought a new 2007 Mustang GT and he can't believe how good it handles compared to his 93 5.0, I drove it a few times and it has good acceleration but handling... it doesn't feel too far off from my Expedition... You feel the whole car lean when you go around a turn even if your not going very fast. It may be better than a 93 5.0 but I had a 90 5.0 and thats not saying much if thats your comparison. Not to mention the brakes... They are almost 3/4's of inch smaller than the RX-8's but it weighs 500 lbs more than the RX-8 how great is that?

^ track ftw, that shit is fun, quarter mile is retarded because I had to wait for hours to drive 15 seconds.......oh god

As most of you know i am as often as possible out on the street with my G-Teck or on my RotoTest to try get some more hp out of my RX-8. Best time this year with the following mods, complete 2.5" Ferita exhaust,stock frontpipe no header, my 4" cold air inlet with Simota filter Shell V-Power 99, Motul oils, NGK BUR 9EQP plugs,pills mods and not to forget 45 000 km of hard driving is 60ft 2.27s and 14.42s-98.5 mph. This is with Hankook 235/35-18" street tires. My Bridgestone R tires is worth 0.2s if i heat them up! Hopefully i will achieve a 14.0-14.10s time after the mapping and with R tires. I always launch at 6-7000 rpm with the R tires, but sometimes the clutch smell a little bit!

/Lasse

6-7k launch? yeesh, those R tires must be stickilicious!!

Yes they are! But DOT slicks is better!

/Lasse

I launch at 7+ on my Yoko Advan Neova street tires :dunno:

I ran a 14.5(at gateway stl) with street tires, heavy 19" rims, midpipe, rb exhaust, intake and the racing beat race flash... That was launching at 4500-5000 feathering the clutch.. and shifting at like 9700 ish! It was fun once I figured out how not to wheel hop to half track... damn stock suspesion minus tein s-techs.

I'd like to see what kind of 1/4 numbers someone gets with one of the high-end turbo kits putting 350 HP to the wheels and big 19" slicks + stiffer shocks on the back.

I'll bet it would do mid-12s set up like that.

Otherwise, I just don't see how this car can get into the 12s no matter how much power it has...the suspension just isn't designed to put it down to the pavement.

^ track ftw, that shit is fun, quarter mile is retarded because I had to wait for hours to drive 15 seconds.......oh god


and sitting there, starring at a circle for hrs suck!

and sitting there, starring at a circle for hrs suck!

Circle? :dunno:

http://autobahncountryclub.net/images4/AerialPrint06.jpg

Mac, correct.. Thats not a circle.. I was more hinting towards Nascar & such.

Mac, correct.. Thats not a circle.. I was more hinting towards Nascar & such.

i havent seen anyone on this site say they are a nascar driver:confused:

My best time stock was a 15.0. My best time with the greddy kit on was 14.3. That was just the greddy kit at stock boost. It was never tuned it was bolted on the car thats all. But I did also run the car with 20s, without the 20s I would have hit high 13s easy.

you must be new here.


for 99% of us, if we gave a rats ass about 400m times we would have bought a brick on wheels with an LS block.

I guess you missed my point. Again. :rolleyes:

Even you don't care about 400m times, you should care about the trap speed your modified cars make at the end of the 1/4 mile. It's measurable, and it translates to power under the curve. I trapped 107mph stock, and you know what, a bunch of other stock GTO's do as well. Its just a starting point, and you can measure the value of the mod by how it increases your trap. That's real, and I don't see how you can argue that. A stock RX8 will trap about 94-95mph. Start there and work youre way up.

I couldn't care less about whether you demand these numbers from your aftermarket manufacturers, because I have no stake in the matter. I just simply suggest that more folks should ask for these sorts of stats, or go chase them yourselves. It doesn't matter what you E/T, because that's more about the driver, and how much hurt you want to put your car. Go out to the track and chase trapspeed, not E/T.

That's how most do it... not just the brick driving people.

I guess you missed my point. Again. :rolleyes:

Even you don't care about 400m times, you should care about the trap speed your modified cars make at the end of the 1/4 mile. It's measurable, and it translates to power under the curve. I trapped 107mph stock, and you know what, a bunch of other stock GTO's do as well. Its just a starting point, and you can measure the value of the mod by how it increases your trap. That's real, and I don't see how you can argue that. A stock RX8 will trap about 94-95mph. Start there and work youre way up.

I couldn't care less about whether you demand these numbers from your aftermarket manufacturers, because I have no stake in the matter. I just simply suggest that more folks should ask for these sorts of stats, or go chase them yourselves. It doesn't matter what you E/T, because that's more about the driver, and how much hurt you want to put your car. Go out to the track and chase trapspeed, not E/T.

That's how most do it... not just the brick driving people.

I agree completely. And a lot of people around here would do that, only that would quantify it by saying they reached a new peak speed on the long straight at XXX track that they regularly drive at.

However, it seems a large portion of the track drivers here do not go after F/I. A lot of the comments that come from them are along the lines of "50 extra horsepower would be great so the large displacement American cars didn't walk us down the straight, but I am not driving at the full potential of the car as is so I don't need it." most of the people going F/I, as it appears to me, are people that never take the car off the street. Kind of a waste, IMO, but that seems to be the trend. For now at least. I'm sure it will change as warranty periods drop and the car becomes cheaper and more available in the used market.

Not to mention the suspension has to be changed a lot to make it run well in a quarter mile and that would change the comfort and perofrmance in highway and track use. Its kind of a fork you hit with this car, you can do some stuff to get the track #'s really good or forget about that and set it up for 1/4 mile.

I am pretty much in the middle and will be looking at an adjustable suspension that maybe I can get good performance in both. Also having a good quarter and taking someone in a LT1 or 4.6 from a 25+mph roll on the street are 2 diff things. Even in bolt on form I hang with 350z's, 2006-07 mustang gts or 96-98 Z28's from a roll. With the setup the car has it just doesnt launch well but once its going and you stay in the high revs it keeps up with cars that are faster in the 1/4. That tells me that when I have FI and am making 330 rwhp 275 lbs tq, I will walk away from these cars on the highway or from 25+mph.

or say.....on the front + back straights of Road America. If I have enough power to even hang with the LS blocks on those straights it will be lights out when we come to a corner.

For reference and comparison....here is what I got stock. Note: my car did have some added weight in the trunk with subs and sub box. This has since been taken care of and I need to rerun for more accurate times.

1/4 mile: 16.1 sec @ 89 mph top speed

^I have your exact setup. Subs and time. I did th same time when my subs were out also. For me it's the high altitude in CO that kills the car. The only way to run better times is to go someplae at low altitude and run it.(minus 1.5-2 sec for every 5200ft of elevation.)

In my opinion, the 8 is an exceptionaly good 1/4 car. Look at it this way, you have a 1.3L engine running high 14s stock (low 16s in my case) that beats any V6 Mustang or Camoro or anything equal to those cars. On the track they'd be killed.
What does a stock evo or sti run? about the same as the 8 at sea level but they have a turbo. Throw a turbo on an 8 and it's a killer on the track and 1/4.

(Finaly for the first time no one has come in yelling that the 8 isn't a good 1/4 car.)

Not to mention the suspension has to be changed a lot to make it run well in a quarter mile and that would change the comfort and perofrmance in highway and track use. Its kind of a fork you hit with this car, you can do some stuff to get the track #'s really good or forget about that and set it up for 1/4 mile.

I am pretty much in the middle and will be looking at an adjustable suspension that maybe I can get good performance in both. Also having a good quarter and taking someone in a LT1 or 4.6 from a 25+mph roll on the street are 2 diff things. Even in bolt on form I hang with 350z's, 2006-07 mustang gts or 96-98 Z28's from a roll. With the setup the car has it just doesnt launch well but once its going and you stay in the high revs it keeps up with cars that are faster in the 1/4. That tells me that when I have FI and am making 330 rwhp 275 lbs tq, I will walk away from these cars on the highway or from 25+mph.

are you worried about detonation? i read in several of these threads that 300rwhp is about all the tiny 1.3 renesis can take. i really want a maz or a protech but like you, i really like the 8 and plan on keeping it for a bit (other option was an infiniti g37 - very nice) so i'm a bit concerned about pushing its limits - so maybe the greddy is the safer option?

are you worried about detonation? i read in several of these threads that 300rwhp is about all the tiny 1.3 renesis can take. i really want a maz or a protech but like you, i really like the 8 and plan on keeping it for a bit (other option was an infiniti g37 - very nice) so i'm a bit concerned about pushing its limits - so maybe the greddy is the safer option?

what does racing from a roll (what you bolded) have to do with detonation?
The renesis has proven 330whp on several different kits. Most of those kits are built with room to grown. It's also obvious on those kits that the ignition system gives up the goose at that ~13psi and you blow out the spark after that. With an upgraded ignition system you should be able to toss in a few more PSI before your static compression starts to become the limiting factor. With AI of some form you should be able to make ~400whp easily streetable without porting.

The PTP kit was tested in the quarter in the Car and Driver mag review, they only ran 13.5 with real bad wheel hop but it was at 109 mph, so you can figure the possible quarter with that. I would think with no wheel hop you would probably gain around 2 mph. So I would guess a quarter with around 111 mph. which is in the lower 12's.

I'm not so sure that 1/4 speed is related wiht time. I don't remember the actual speeds but last time I was at the track with my brother (about a year ago) he ran a 13.6 with his vette (all motor) at like 98 mph and some other car ran about the same time at 105 mph. Something like that.

morning 14.9 // afternoon 15.1

launch at 3400

I'm not so sure that 1/4 speed is related wiht time. I don't remember the actual speeds but last time I was at the track with my brother (about a year ago) he ran a 13.6 with his vette (all motor) at like 98 mph and some other car ran about the same time at 105 mph. Something like that.

If person A got a good start and person B wheel hops the first 60 feet then yeah, the car that runs slower is going to run a faster time. That does not stop the faster car from runner a faster quarter mile. Trap speed is an indicator of POTENTIAL time. There are a lot of factors to consider (power delivery v. acceleration, shift points, number of shifts, etc) but generally speaking if you trap 105+ you should be in the 12s. That number may vary based on how you come off the line.