View Poll Results: If you could go for forced induction...
Turbo
115
56.93%
Supercharger
87
43.07%
Voters: 202. You may not vote on this poll
If you could go for forced induction...
03-20-2008, 06:03 PM
#155
Tailgaters beware
The Flux Capacitor is real too!
http://youtube.com/watch?v=8AMXdMARaiA
http://youtube.com/watch?v=8AMXdMARaiA
03-21-2008, 01:44 AM
#157
The comparison you should use is the best time they both got, which is 13.1 and 13.6.
I didnt say it was a giant difference but look at the cost, the Greddy Turbo with all the fixes would cost you about $4000 and the pettit is $6500 and you lose to the Greddy by 5 car lengths... every 1/10 of a second is a car length approx. I wouldn't want to pay $2500 more and lose by 5 cars. Remember thats a base Greddy, if you spend $5500 on the MM greddy you would walk away from the Pettit for still $1000+ cheaper, you would likely get a 12.5-12.7 and thats 10 car lengths...
A big factor is as mysql said, he changed out his turbo and now makes more power, on kits like the PTP you can make 300 hp or 380 if you choose to set it up that way. The ability to choose your HP is a big buying factor for me.
I didnt say it was a giant difference but look at the cost, the Greddy Turbo with all the fixes would cost you about $4000 and the pettit is $6500 and you lose to the Greddy by 5 car lengths... every 1/10 of a second is a car length approx. I wouldn't want to pay $2500 more and lose by 5 cars. Remember thats a base Greddy, if you spend $5500 on the MM greddy you would walk away from the Pettit for still $1000+ cheaper, you would likely get a 12.5-12.7 and thats 10 car lengths...
A big factor is as mysql said, he changed out his turbo and now makes more power, on kits like the PTP you can make 300 hp or 380 if you choose to set it up that way. The ability to choose your HP is a big buying factor for me.
FI can get endless and a lot is based on how much money your throw at your car.
The amount people put down, may also be about how they feel about the kit. Meaning a SC person may spend extra, because he likes the performance characteristics of the SuperCharger.
The Greddy kit, in my opinion, does not have anything on the Pettit kit. The true competition would be the MazdaManic turbo upgrade kit. However, you are left with a bunch of extra and unneeded parts, and all the bad Greddy history.
If MazdaManic and BHR released their own turbo kit, that will raise eyebrows, and primarily because of the HP to Dollar price point and their connection to the RX-8 community.
CRH- Threads about F/I are much akin to arguing about which Crayola color is "best".
Last edited by sosonic; 03-21-2008 at 01:47 AM.
03-21-2008, 01:54 AM
#158
GReddy just shoved it out there and let the market sort itself out.
Negligent, maybe. But not bad engineering particularly.
BTW - even with those "extra and unneeded parts" its still cheaper and more powerful and you can sell those "extra and unneeded parts" and recoup a significant part of your investment.
03-21-2008, 02:48 AM
#161
The "bad GReddy history" was almost entirely invented by uneducated buyers.
GReddy just shoved it out there and let the market sort itself out.
Negligent, maybe. But not bad engineering particularly.
BTW - even with those "extra and unneeded parts" its still cheaper and more powerful and you can sell those "extra and unneeded parts" and recoup a significant part of your investment.
GReddy just shoved it out there and let the market sort itself out.
Negligent, maybe. But not bad engineering particularly.
BTW - even with those "extra and unneeded parts" its still cheaper and more powerful and you can sell those "extra and unneeded parts" and recoup a significant part of your investment.
However, the Greddy turbo kit did not show "domination" of Pettit/SuperChargers (and the Hymee is not there yet ) on the strip or track. The MM upgrade kit is indeed another animal though. I'm sure many others, like myself eagerly await some 0-60 and 1/4 times to see the MM upgrade kit in action.
When we start running in the 12+ sec. range, we are talking stock 911 Porsche range. And an RX-8 doing that is definitely, "value add" in many people's book. "Make your RX-8 as fast as a 911 Porsche" will get a lot of ears wiggling.
While playing with "data" is scientifically correct, there is nothing like "real world" to prove a point and make you "feel" good. Otherwise, there is little to no "real world" difference...
Last edited by sosonic; 03-21-2008 at 03:33 AM.
03-21-2008, 02:37 PM
#162
Tailgaters beware
Yeah a 1/4 mile run with something besides a Greddy base kit would be great.
As far as the Greddy dominating the Pettit, I dont think it does but I think its bad that a $3200 Turbo **** or Uh... kit can get a better 1/4 mile than a $6500 SC, and if you say compare the reflash 300 hp Pettit your talking $7300 and that one gains 25 horse but only 10 lbs torque.
It just doesn't seem like an option that is best designed for our low torque high revving motors. Turbo's create pulling power in the smallest of motors.
I like the Pettit it looks nice, I just think performance should be factored into the cost of some of these kits, if the Pettit gave me the performance it does for $3500 I would consider it highly. When I'm dropping $6500-$7400 I want mustang GT beating HP, I don't want my $30,000 car + $7500 being only as fast as a $23k stock mustang. I would like the speed of a Porsche 911 or better like sasonic is talking about...
As far as the Greddy dominating the Pettit, I dont think it does but I think its bad that a $3200 Turbo **** or Uh... kit can get a better 1/4 mile than a $6500 SC, and if you say compare the reflash 300 hp Pettit your talking $7300 and that one gains 25 horse but only 10 lbs torque.
It just doesn't seem like an option that is best designed for our low torque high revving motors. Turbo's create pulling power in the smallest of motors.
I like the Pettit it looks nice, I just think performance should be factored into the cost of some of these kits, if the Pettit gave me the performance it does for $3500 I would consider it highly. When I'm dropping $6500-$7400 I want mustang GT beating HP, I don't want my $30,000 car + $7500 being only as fast as a $23k stock mustang. I would like the speed of a Porsche 911 or better like sasonic is talking about...
03-22-2008, 01:19 AM
#163
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I believe that superchargers still have a lot of potential in this area. There is only one supercharger that is really available at the moment (that being pettit's supercharger) and it produces some pretty impressive numbers. And from what I understand, the drive ratios can be changed to provide even more boost. I am very curious to see where the issue stands a little was down the road. Just my thoughts, I am not biased at all toward either type of induction, but after doing a lot of research before going FI, it seems a supercharger may be my choice. If I had to choose right now, sure I would go turbo, but again, the s/c area looks very promising!
03-23-2008, 08:06 AM
#164
Registered
Traction?
03-23-2008, 08:22 AM
#165
14.7 - NA all the way 
Totally stock, bar the numero uno hymee catback.
Cheers,
Hymee.
PS: I'll give you a tip on your launch - your tyres must stick. You can never have too much power, only too little traction.
Totally stock, bar the numero uno hymee catback.Cheers,
Hymee.
PS: I'll give you a tip on your launch - your tyres must stick. You can never have too much power, only too little traction.
Last edited by Hymee; 03-23-2008 at 08:24 AM.
03-23-2008, 09:46 AM
#166
Tailgaters beware
Whats your Mile per hour? Thats the tell all.
Thats not bad for stock Hymee, how did you launch it?
Last edited by Rocketman1976; 03-23-2008 at 09:58 AM.
03-23-2008, 03:47 PM
#167
Polak is probably 60km lighter than me, so I guess that is how he beat me!
Yes - MPH is the tell all in regards power. I think it was in the mid 90's. 94 or 96 comes to mind. I think I posted my slip - it was a while ago.
As for my launch... Well, I can't give away all my secrets can I?? Lets say I waited till the light went green, then I started driving the car and cut the light, and 0.20x seconds later I cut the 60' light. That was my best 60' ever, including my previous ride with 300+ HP at the slippers - and she had slicks on.
Any you know what else - I haven't raced since. No point, as I felt that was about as good as it would get NA, and my real desire was betting a good blow(er) job. I have been to the drags many times though - to help out with much more capable cars in the 6, 7 and 8 second category: A 20B turbo sport compact, a 900+ HP pro-stock NA V8's, a 20B turbo rail and a 26B turbo BMW. Nice
Cheers,
Hymee.
Yes - MPH is the tell all in regards power. I think it was in the mid 90's. 94 or 96 comes to mind. I think I posted my slip - it was a while ago.
As for my launch... Well, I can't give away all my secrets can I?? Lets say I waited till the light went green, then I started driving the car and cut the light, and 0.20x seconds later I cut the 60' light. That was my best 60' ever, including my previous ride with 300+ HP at the slippers - and she had slicks on.
Any you know what else - I haven't raced since. No point, as I felt that was about as good as it would get NA, and my real desire was betting a good blow(er) job. I have been to the drags many times though - to help out with much more capable cars in the 6, 7 and 8 second category: A 20B turbo sport compact, a 900+ HP pro-stock NA V8's, a 20B turbo rail and a 26B turbo BMW. Nice
Cheers,
Hymee.
Last edited by Hymee; 03-23-2008 at 03:51 PM.
03-23-2008, 04:23 PM
#168
RX-8 = Japanese MG
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[QUOTE=Rocketman1976;2359142] I wouldn't want to pay $2500 more and lose by 5 cars. Remember thats a base Greddy, if you spend $5500 on the MM greddy you would walk away from the Pettit for still $1000+ cheaper, you would likely get a 12.5-12.7 and thats 10 car lengths...
QUOTE]
I can't image how you can get this car to do 12.5s on street tires.
QUOTE]
I can't image how you can get this car to do 12.5s on street tires.
03-23-2008, 04:55 PM
#170
Tailgaters beware
I don't necessarily care if someone runs a 12.5 but If they can show a high enough mile an hour for a 12.5 that would be good enough. After I put my turbo on I will take mine to the track and run drag radials and see what kind of time I can get. I plan on pushing between 350-375 rwhp.
I will only do the track once though because it really beats the hell out of your car. I just would like to know what the car is capable of so I can mentally compare it to some of the v8's and awd turbo's out there.
The guy with the 276 hp Greddy ran 107 mph, thats pretty decent.
The quarter mile calculator says mysql should get a 12.75 with his 307 rwhp using 3300 lbs as curb weight (I was including driver). I did the figures on the guy with the 354 rwhp Mazsport at 3300 and it says 12.25. Those would probably be a perfect run with drag radials but they are some nice times to be capable of.
I will only do the track once though because it really beats the hell out of your car. I just would like to know what the car is capable of so I can mentally compare it to some of the v8's and awd turbo's out there.
The guy with the 276 hp Greddy ran 107 mph, thats pretty decent.
The quarter mile calculator says mysql should get a 12.75 with his 307 rwhp using 3300 lbs as curb weight (I was including driver). I did the figures on the guy with the 354 rwhp Mazsport at 3300 and it says 12.25. Those would probably be a perfect run with drag radials but they are some nice times to be capable of.
03-23-2008, 05:35 PM
#171
Tailgaters beware
Chris, I think you are mixing your measuring sticks. What does your calculator say for trap speed? The interesting thing about rotaries is that they typically have higher MPH numbers for an equivalent e.t. As such, you'll probably find a 12.50 e.t. on slicks to be about 110-115 mph(?).
The one I just used says 107 mph 12.85 for the mysql equation.
12.25 111 mph for the 354 Mazsport
And if I am setup at 375 rwhp at 3300 a 12.0 @ 113 mph
The Greddy guy got 107 mph at 13.1 on his actual time slip with his dyno showing 276, and if the calc says mysql would get 107 at 12.85 maybe he would probably get 109 mph 12.85. You would definately think mysql's car would be in the 12's since he makes 30 more lbs torque and 30 more hp than the 13.1 guy.
Last edited by Rocketman1976; 03-23-2008 at 05:42 PM.
03-23-2008, 05:58 PM
#173
Tailgaters beware
I edited that post up above and added the Greddy guys mph and as you said the mph is higher than normal. I think that was probably his best time possible, or very close to it. He did show videos of several runs and posted time slips for all of them.
Last edited by Rocketman1976; 03-23-2008 at 06:23 PM.