1andonly

Hey everyone. Im fairly new to the rx8. Im not looking to like put the amount of money into a turbo that could buy me and engine. lol. I was wondering what is a decent turbo that i can get 300whp out of my rx8 maybe a little more without spending more then 5g.

mike1324a

Greddy and all the parts to make it run are about 5k. Your going to to be pretty maxed out at 300whp tho. If you want more then that your going to have to shell out more money. The new mazsport kits are making between 330-400whp but those cost 8k. It sound very expensive for these but they are the most complete kits i have ever seen. Everything you need is in the kit: hardware, software, fuel system, injectors, even new engine mounts. They set the standard for Ecu with the 8 and now they are setting the standard with their turbo kits too. There are other kits that cost 6-7k but other then the speed force racing kit they arnt out yet. Rx8 part are expensive, especially the ones that are worth getting. You gotta pay to play when it come to the rx-8.

mysql101

1andonly, I have a quick and dirty parts list for the lowest cost turbo kit setup available for the RX-8

It includes a list of all the basics, so this will show you what parts you'll need in addition to the kit itself.

1andonly

ive seen that the greddy has alot of problems. or maybe im just reading wrong. mysql101 what do you think about the kit? ive seen a couple of video's you have made.

Terrance26

I haven't had any problems with my greddy kit, the greddy kit that I have came with the ultimate so most of the bugs are tweaked out. I wasn't expecting a mind blowing increase but it has a very nice pull with the stock setup that greddy has locked in. In the next couple of weeks I will get it tuned and will be turning up the boost to 9#.

mysql101

greddy's main problems are the crappy hoses that ship with it, and fuel management.

They haven't done anything about the hoses (you can buy new hoses for just a few bucks), but the new fuel management is a lot better than emanage blue. Of course if you want to upgrade, you can get the int-x for $1500 more, and the kit will still be cheaper than anything else you can buy right now.

you can expect to get about a 1/3rd power boost over your current car's power. It is a very nice gain.

1andonly

what numbers would i be looking at? like 290?

mysql101

270 - 300 is the normal range, depending on tune, and if you have stuff like a boost controller.

1andonly

so you think the greddy will do what i want? what stuff should i add to the kit? and what psi are you running at?

whoneedspistons

iTrader: (2)

well it could..... but you have to remember that the mazsport kits make 304 at the wheels with only 6 psi... this will allow you to run it longer safer and have more fun... even when you get the greddy you still have to upgrade fuel which is not a cheap endevour.... and that is somethign i would definitely suggest

SSpyder

Dont take any short cuts when u turbo this car or any other in matter of fact, some of the kits are lot well made and have what you need thats why they cost more. You have to remeber that you will always want more power later on the road. Comes down to Power/Relaibilty

guy321

I wouldn't turbo the 8. Spend the 5k on a bike, it will be faster and more reliable.. and you still have the 8 to drive when it's raining.

mysql101

It's debatable if you need to upgrade the fuel pump if you're staying at the 300 or under mark. You're not going to get much more than that out of the greddy turbo.

whoneedspistons

iTrader: (2)

well if its a question and or debatable then why risk the chance of failure of the fuel pump.... spend the extra couple hundred bucks and get the injectors, and fuel pump and a killer tune.... the tuen is what will make or break you

also remember that you can only pick 2 of the three; cheap, reliable, and fast

anything in the 270-280 mark is hundred horse power over stock and in my mind that would be fast

mysql101

I have nothing against an upgraded fuel pump, it's on my list of things to get.

That said, by your logic, you can add a TON of other items on your list of things to buy. It's almost never ending.

There's more of us without an upgraded fuel pump than those who do have it.

toxin440

5k? best best is to go with the Greddy thats been updated. I dont follow it but i think a large majority of the bugs have been worked out. Its definitely not 100% as friendly and complete as Mazsports kit.

I'm personally saving up for the Type I Mazsport kit... yes its more expensive, but like others have said, parts for our car are hella expensive, and you do get what you pay for. Any turbo has the potential to blow up your engine, I'd rather save, pay the extra and have the peace of mine of a high quality kit.

whoneedspistons

iTrader: (2)

what is the majority of reasons why the motor blows??? i believe it is the same reason as most motors... lack of fuel... i am not saying you are doing something wrong i am saying to amke it reliable then you should have one.... you are right about saying that you could add other stuff... and in my opinion you should... i have built a few turbo cars in my life... and over built is always better

mysql101

From what I've seen on the forum, most people blow up their engine because they installed a greddy blue without doing any tuning. Or they turned up the boost without retuning. Basically the same thing...

sosonic

If you are going turbo, I think you go Mazsport turbo from what I've read. Maybe you should save a little more. 6 psi for over 300 WHP should be nice and easy on your engine life.

Raptor2k

I wish I had monies.

Ah well, I guess an n/a RX-8 will be good enough for me for the rest of college.

1andonly

hmm looked into the type 1 mazsport kit. Desided its def. worth the wait and save. So thanks everyone for your point of views. :D

Fanman

Also wait another month or 2, the supercharger kits are being introduced soon. Might be more to your liking. It's not just a few bugs, and tuning with the Greddy, but as have been mentioned before, the hoses should be upgraded, and a few of the Greddy turbos have been known to go out. Also Greddy customer service is terrible. If you are missing parts out of your kit (and I did) don't expect them to be very helpful.

kartweb

Forced induction is the magic bullet to pack in more power. Sure 300 whp is very possible. Of course there will be some major compromises in acheiving that, not to mention the cost.

Consider this; For under $15,000 you can buy a C4 Covette with under 50,000 miles that already has 300 whp. The cost to upgrade and maintain an RX8 with 300 whp will probably top $15,000 over 50,000 miles.

Not to push you away from the RX8 but after contacting a few of the folks who are selling their FI RX8's I hear the same thing; the car is no longer practical as a daily driver. Sure lots of folks who have upgraded to an FI may disagree with that, but you can bet they spend a lot more time and money keeping their cars running. Thats cool, but not something that appeals to 90% of the folks that own a sports car these days. It takes more of a hot rod type person to appreciate the effort it takes to reap the rewards of FI.

I fit the hot rod type, but prefer to spend my time with clumsy old muscle cars. This spring I'll be selling an old vette and taking on a 928 short block chevy swap. 450 whp at 3200 lbs for about $12,000. Makes a greddy turbo kit seem puny. What's more is it will probably be more reliable to drive, and get better gas mileage. Of course I'll keep my RX8 as the daily sunshine driver and the CX7 as my commuter/SUV.

1andonly

i to like muscle ars and have a 1969 camaro. I have my power house straight line car. I like the corvette just doens't fit me. The rx8 is my PROJECT CAR. Just like the 69 camaro was. The rx8 wil be with me for a long *** time. The whole spending a shitload of money and trying to get the car to run is quit fun. I like to get my hands dirty and i dont like things to be easy. I like to look back and s ay damn! i just ******* did that. Unlike all the other sports cars out that are easy as **** to put turbo's, and superchargers. the fact of the matter is my goal in 3-4 yrs is to put a 20b engine in the rx8. that would woop any muscle car, sports car, you would come accross. And really i dont see to many people in here that have been complaining about maintaining there FI cars. If anything is very simple **** to fix. from what i understand its only the greddy kits haveing the problems.

mysql101

heh. Since it's the only kit you could buy? And by problems, you mean $100 worth of hoses?