Depending on your powercurve, I would be willing to bet you are shifting too high. We had a client/local that picked up 3mph from shifting sooner on his stock turbo. 117 to 120. You want to keep the car in the meat of the powerband.

This was at very close to sea level. Your higher elevation will make the turbo run out of breath even sooner.

- Bryan

 

Well, your shift to 5th may partially be what is causing the lower MPH. Most people trapping less than 120mph on the Evo IX gearing have wound out 4th gear past 7,500rpm so they don't have to shift to 5th. I have my rev limit set to 8k RPM.

 

Are you running a catless TBE? Try preloading the WG uo to about 22 to 25 PSI of spring pressure.

 

all in the tune IMO, i think its lots of knock i have seen it many times.

car feels like it goes into a blank spot of acceleration.

GST, can you elaborate a bit more on the exact shifting point. stock turbo with minimal mods. everyone says to rev higher and its better and i DONT understand that theory at all since power falls off @ ~ 6500rpm on stock turbos!

 

you have to really look at your powercurve as every car will have a different power curve. You want to set a shift point that will drop the car back right into the meat of the powerband.

 

Did you notice what fuel he's running? It's not knocking
I've squeezed what I can out of the tune and still keeping the knock level <1-2 counts in AZ 110 heat. If you think running 8-10 degrees @peak boost and climbing to 18-19 degrees of timing up top is not enough then

I've already spoke to mrdecrypter.. We suspect it's the turbo. This turbo did at trap 115/116MPH at one point but has slowly degraded. He did have a 115MPH same night he ran 12.1 @113MPH. He's going to install his stock 9 turbo and test it out again at the track. I guarantee he will trap in the 116-117 MPH.

There are plenty of Wingz E85 tuned EVO's 8/9 in AZ stock turbo setup have trapped 116-118MPH.

E85 FTMFW!

 

wingzperformance FTMFW

 

you can have my cable next week when i get back from PIR

 

I have been racing at that same track for the last 7 years, I raced about 12 of my own cars and aproximately about 280 passes total. If you do a search on my name you will find that I proved over and over that Tucson International Raceway is one of the worst tracks in the country for racing.

There have been only 4 Evos ever in the 11's, 3 of them with turbokits and many bolts ons:

OJ's Evo(V8haha) ran a best ever of 11.8@116(one time ever on 11's) he had

Evans Evo 9(eseEvo) 2.3 stroker kit plus turbokit 11.9@119

Rob's(fastrob691) Evo 9 RS and thousands of dollars worth on mods best of 11.93@116 tune on 100oct

Pj's Evo which ran a 11.6@130 with well over 500whp(Mustang Dyno)

Honestly, I am absolutely not suprised, I expect you to run maybe a 11.8 or 11.9 with awesome (Jonh Force)driving skills. It is the altitude,the track, and heat too, we were today in over 100 and the air here in the desert is thin . Look around, look left and right, we are about .4 or .5 tenths slower than what people are running in the East coast, but that is not just you, that is every one with a Evo.

I know your frustration. My only reward is that I know and you know that even running low 12's there aren't many cars that can beat you at SIR.

Your best bet will be making a trip to Phoenix(Firebird International Raceway), many of us were rewarded by a drop of .2-.3 tenths and an increase of about 2-3 miles traps. You will be in the 11's for sure if you can venture to take your car to Speedworld outside Phoenix.

Best of luck with your car and please loosen up a bit more next time you see me at the track, we I saw you at the track you were extremely quiet. Just remember, out of dozen of Evos modded, only 4 ever in the high 11's in the last 6 years, we just need to accept where we live.

Carlos

 

3075 Feet my friend but it is registered under the NHRA altitude chart as a 3100ft. Once you go to the track, look at the trailer/tower, they have the altitude painted on the tower.

Carlos

 

Hey Phuong,

What is up?. Your tune made wonders on my lighty modded Evo. I hit a 12.5@109.40 on 91oct at SIR(3100ft) with just your tune, exhaust,MBC, air filter and IC pipes.


Phuong, one thing regarding your comment(I highlighted), "many turbos trapping 116-118mph", only a single one ever in Tucson on stock turbo and it was tune on 100oct and it trapped 116. Maybe at Firebird but not in Tucson.

Carlos

 

"My ride will hit 30 PSI with no problem in 3rd, 4th, and 5th if starting from 3k RPM at like 40MPH. But 1st and 2nd come no where near 30. When im launching at the track, i usually peak at 20-25 PSI in all gears. Also, i had my 2 step bumped to 6k RPM. "

You will never see 30psi in first. No time for the turbo to spool up that fast. I am inclined to say you wouldn't see 30psi in second either, again, not enough time for the turbo to spool up that fast, by that times your car is already loosing boost after 7000 rpm.

Carlos

 

Hey Carlos,

Good to hear.. Thanks for the update on the pump gas results from your EVOIX. That is awesome. Also, thanks for sharing those track results of EVO's running in Tucson. Elevation + AZ heat =

I stand corrected.. Those traps are from Firebird and Speedworld tracks. I am curious though to see what he does trap on the stock 9 turbo with existing tune.

 

That seems like ALOT of timing at peak boost. Sure its not past mbt?

 

Carlos -- You could be right about the track (altitude), but the OP said it was only 70 degrees when he ran. With all of his mods, even at that altitude, running e85 and 30psi of boost, I would have thought his trap would have been more like 120+....