It's still leaps ahead of the greddy turbo, which at 5.5psi will begin to lose boost at 6750RPM!!! At 9psi it begins to drop at 5750. In either case it's not the tuning, it's the turbo:

http://home.cfl.rr.com/epitrochoid/rx8dyno.jpg

obviously this turbo holds boost far deeper into the powerband, but if the ignition is rearing its ugly head, high RPM's will only make it worse.

Most places here have 87 / 91 / 93 Sunoco has 100 octane "race gas" which when gas was < $2 a gallon was a ripoff, but now it's still $5 a gallon. 93 Octane down the road from me is still 2.95.. has been all week.

meh what's an EMS?

no i didnt, thanks for the site

edit: $1600?! OMFG WTF

yup, it gives the rx8 200whp NA... but you need other bolt-on's too, like aftermarket intake, midpipe and exhaust, lighter flywheel, etc.

Weird - my car has 200whp w/ just intake and exhaust :)

some people are lucky like you :P

you wouldn't happen to have an afr (or lamda) graph would you?

I just graphed my lamda in a 2nd gear pull and am trying to find people with both lamda graphs and dyno graphs so I can do some correlation! I'm fighting going to a dyno ;) but I will probably end up doing so in the spirit of contribution to progress.

If no graph could you let us know which flash you are on? Thanks

I posted mine at the end of this thread...https://www.rx8club.com/rx-8-discussion-3/took-car-dyno-87745/ the numbers are uncorrected..

I'm probably close or more than 200 whp, mustang dyno's read low. I'm trying to get KY to set me up on his dynojet.. I was having trouble with traction control still staying on even though it was OFF... It was also 93F outside and 103F inside according to the dash of my car.. Read the thread if you want some more info.. Mine's all stock, still on the M flash.

Having built and tuned numerous 1000WHP cars, I am having a hard time believing that you are making 300WHP at 5 psi of boost.This is roughly 26 horsepower per psi of boost pressure.It does not seem feasible.Especially when you consider that with 7 more psi you only made 348WHP which is roughly 7 WHP per psi of boost beyond what the orignal 5 psi of boost made.So the turbo goes from 26WHP to 7WHP per psi of boost? This is 1/4 of what it is making at 5 psi.Does anybody else see this?

it's pretty linear from 5 - 7.5 - 9 psi though, something is just wrong with the 12 psi run.. he prolly is "blowing out" the spark...

we've seen the greddy make 300 hp with the interceptor ECU @ 7psi, but it chokes over 6500-7000 rpm, not enough air...

So $6500 ish + installation and tuning + (I have a 4 port) 2nd oil cooler install (at the minimum) = too many $$$ (imo)

Quite interesting how the engine is responding to accurate tuning with various pressure and CFM levels dont you think? I really like the new engine and have great hopes for it, granted it's not a 1000hp six or eight cylinder or a full race 13b for that matter, but it does make one hell of a sportscar engine! I did have a few issues that were working against me so yes Tim there is a diminishing returns issue. That said, once I substitute the components designed for ~6psi from the greddy kit and upgrade the stock ignition setup I expect better results. Thanks,Scott

If your car is NA, that's about 5-6k for turbo kit, install, tuning, bov, etc. If the upgrade package is another $5k, that's $11,000.

I wish. All we have here is 87/89/91 & even the 91 is watered down. I believe Moostafa had his EMS tuned & they said it was like 89 in other parts of the country. Wasn't surprised when people could get the Interceptor to break 300 whp (around 275-280 if I remember correctly) here in Cali. Gas is not the best here.

^^^
I think your math is wrong. The interceptor is 1600, plus the hybrid GReddy kit ~5K. 6500.

uh. I'm just telling you what it costs to get the greddy kit installed, with interceptor-x and tuning (actual numbers from what it's cost others to get it done at mazsport). The only thing we don't know for sure yet is if the upgrade kit will cost 5k. If so, then the total cost will be 11k range out the door.

Maybe you'll get a discount if you get the upgrade done at the same time your car is turboed.

I just want to point out that Scott is a consummate professional. His responses to challenging posts are always polite and he goes out of his way to diffuse confrontation. Scott is a valuable member of our community and has / is doing more for the 8 than anyone else. Bravo, Scott. Keep up the great work.

+1

Everyone here should think about that when posting to challenging posts.

Have the "ingredients" been listed for the car that produced those graphs?

ONE VOTE FOR SCOTT FOR PRESIDENT!! Or at least Governor for Florida! :mdrmed:

+1..2..3..4..........6500 lol

scott, what clutch is that car running? i need it..

So is the full kit going to have bigger piping and a larger intercooler? Also, is the full kit a retorfitted greddy kit or an all new kit that is designed after the greddy kit?

So...you replace the greddy emanage with an interceptor, and replace the turbo, intercooler, and some piping. Heh, what's left of the original kit?

From your impressive results.......your turbo is efficient under 5 psi and inefficient over 5psi? The turbo required for enough airflow at 7000-8000 rpms on a 1.3L rotary, with 10 to 1 compression, would be something along the lines of a T66. However, it is not efficient at 5 psi. I am just trying to figure this out is all.

Can't wait to see the final price and some pics!

This dyno run was done w/ the Greddy Intercooler and piping. He is planning to upgrade those for the full kit.