The RX-8 I picked up is finally going under the knife. Right now it's nearly stock, with staggered wheels and a couple Sparco goodies. We're acquiring a lot of parts over the next few weeks to do a build for a Time Attack RX-8. We got the last Greddy Turbo Tuned Exhaust from Greddy today. The parts should start showing up next week as we commence the build.

Everything we install and more will be on our site soon. I'm not trying to sell anything here or advertise much yet, but when the time comes I'll gladly sponsor here.

I made this thread to see if you guys were looking for anything specific with the turbo kits out there. We're using Greddy components as a baseline, and will be fully customizing the kit.

We are planning on multiple cooling upgrades and packages as well. If you guys are looking for a specific oil or water cooling system to be available, let us know. I'm starting to do some homework for some more durable race transmissions as well. I know these trannys don't take too much abuse but we'll see how it goes.

So stay tuned and check back for pics. If you guys have suggestions for the build, or want to see certain parts put to good use, let me know. We will be revealing this car at an upcoming time attack event we're throwing at Firebird International Raceway (in Arizona).

If you guys would like to check out the event, visit the following link. Thanks for viewing!

https://www.dezodwest.com/dds.htm


UPDATE 1:
Ok guys...

Here's the pics of the Greddy EvoTT exhaust system for the RX-8. It sounds incredible, and the fit and finish are among the best of exhausts I've seen. If you have questions about the exhaust let me know! (Can't list sales here )






So far so good!

 

Couple tiny pics to show the car, we'll be putting some enhancements on it but you get the idea.

 

Nice!! I have a dezod turbo kit for my 7th gen civic and love it. I plan on boosting my 8 next year, so ill be watching this thread closely.

 

Nice man!

Yeah we started with the D17 turbo kits, then developed some Scion kits that are now #1 in the industry for the tC. Hopefully the RX-8 is another success story.

 

make sure you upgrade the ignition system. that is one of the bottle necks on the 8

 

Thanks for the tip. I know there's a few week points with the RX-8 that we plan on addressing. I've received good tips on a few things to do in regards to the ignition so we'll see how it goes.

We just received the Greddy Turbo Tuned exhaust today. I'll be installing it shortly and expect the first batch of pics in a little bit! I already installed the Apexi AVC-R boost controller yesterday.

 

Ok guys...

Here's the pics of the Greddy EvoTT exhaust system for the RX-8. It sounds incredible, and the fit and finish are among the best of exhausts I've seen. If you have questions about the exhaust let me know! (Can't list sales here )






So far so good!

 

That looks really good

 

is it just me, or does that big back pipe go to a silly small pipe to the Y????

that is very, very odd.

beers

 

is there any real difference with the sp2 greddy exhaust and this one?

 

yes the mufflers are not the same, but the ? about the Y is much more important.

beers

 

yeah i noticed that right after i wrote that and also this one has a blueish color on the tips oh and about that pipe it does look kinda weird ima check my sp2 to see if it has that tommorrow

 

oh just found out the evo greddy exhaust are for cars w after market turbos go ahead laugh at me

 

The SP2 also features smaller piping diameter. The EvoTT system uses 70mm piping, whivh equates to 2.76". This added flow will definitely help with a mid-pipe upgrade and turbo.

The Y pipe is cut all the way to the back of the weld. So the actually space where the exhaust is effectively split in half is quite large. It features a very smooth split, keeping turbulance to a minimum and the exhaust velocities as high as possible, given this diamter.

I hope that helps, but if you need more detail please let me know.

 

good luck with the build, looking forward to future updates

 

What is your hp goal you are trying to achieve?

 

Nice looking exhaust.

 

yep,

i will bite on that one. could you get a photo straight at.

the back pipe and y at a 90 deg angle to the camera. with the center of the shot be where the back pipe hits the connector to the y?

if they are the same size that would be great to know..(back pipe and y.) as to the 2.76 dia. that is better than 2.5. but is it enough? no one really has a black and white answer on that.

beers

 

Instead of a peak horsepower goal, we're shooting more torwards the most useful torque curve. Having a broad torque curve geared towards performance and higher RPMs will yeild much better times than an engine that only peaks at 340whp with almost no power below 5k. We like to maintain a highly driveable vehicle without losing almost any of the throttle response of the car. We can customize our turbos quite heavily, with AR, housing, trim and wheel size. I think after a few different turbos through testing we'll find some that really stand out as the best to use.

I just finished installing the Apexi AVC-R boost controller yesterday. With adjustable boost by gear, and RPM, it will allow us to fine tune an already stellar system.

Here are some pics: (The Apexi RSM you see on top is used for G-sensor logging. I will be able to log the real difference in stopping power with better brakes and tires, and compare results. I can also show the difference in handling the OEM suspension offeres when compared to the coilovers we'll be using).

 

wow, that is a very good plan. i am glad you are looking for the best torque curve instead of the highest peak hp. very smart.

 

Great questions!

The exhaust is indeed perfectly symmetrical. Each runner is the same for both exhaust outlets, and the y-pipe is centered on the car.

The cat-back pipe, and the y-pipe are of the same diameter, which is 70mm. There is no tapering of the exhaust system.

The 2.76 is a vast improvement when it comes to flow. It doesn't seem like much, but the 2.76 can flow over 400whp. With the Renesis engine, this more than enough.

If you step in to a large 3" rear section you run into a couple different problems. The first is weight. Extra weight without extra gains is not necessary. A 3" rear section will not make much of a difference in horsepower on a turbo 1.3L RX-8. A 3" exhaust gives the exhaust fumes a lot of space to move around. This will decrease the velocity of the exhaust, due to turbulance. The large pipe could also cool the exhaust faster, again creating turbulance and back pressure. A hot exhaust, going through a smooth mandrel bent system with minimal bends is essential. I spend a lot of time doing research on what exhausts would work well, and this seems to be the best system to use for a turbo.

The second problem (though smaller) is price. Stainless is expensive these days. 3" piping is no joke, and will definitely increase the cost of the exhaust, in addition to the weight.

So all in all, I think many will be happy to use this exhaust. I do offer it on my site now, but I can not list things directly here, for I'm not a paying sponsor (yet).

For those who want me to make a video let me know. I will definitely have some more pics later today. For anyone that wants to see the event in person, visit our race event we are having at Firebird International Raceway on May 31st. We will be showing off the 8, among other projects. Right now I have about 15 different Mazdas alone that will be attending this. https:www.dezodwest.com/dds.htm

 

The car will be faster as a result

We only plan on using the dyno to show off our torque curves and to better tune our AFRs.

 

yes it will. looks great. keep up the good work.

 

looks nice

 

yes i will still wait for the photo..

i will say 2.75 or 3.0 back pipe into a y that is an equal size is what is needed.. out of the y.. 2" per side is all that is needed.. but i think 2.5 would be good, and less expensive, and more choices..

and now a muffler ? what is the system. baffles? or other. if other what is it?

as to the flames and exhaust smell stuff.. that is marketing. are you marketing.. or providing info???

beers