maxe1

Hallo

I have problems reaching over 290hp/380nm in the engien with my 2004 STI

What is wrong????

Here are my spes.

MY2004 WRX STI:
Hayward & Scott eksos from turbo 2.5" with mids section silenser and uppipe
JR Air Filter
Walbro 255lt Fuel Pump
Motec M800 med 2 mods + auto ic/spray and antilagg
APS SR40 Turbocharger
APS top mount intercooler

I get the same resullt with my original turbo and ic.

I mesured back pressure in my uppipe for 2.5 with 1.5 turbocharge is this to mouch??? I even tryed a nother eksost (4.5" downpipe, 3" mid with race cat. and 2.5" back)
But still same effect and backpresure

If anyone know whats wrong please let me know

CustomScoobyIOM

Who mapped it?

maxe1

Per Guldbransen in www.autoconsult.as from norway. He is suposed to bee the best in norway. This guy is driving grup-n rally him self and has mapped the most subaru groop-n rally cars in norway. He has been doing this in 10 years. He has also maped other street cars with succes.

CustomScoobyIOM

Fair enough!

Should be doing more than that definetely.....

Mines std and has GEMS only on it and is producing 330bhp+

Has he mapped an AVCS car before?

maxe1

yes he has a 2004 sti japan verson with AVCS him self that he drives groop-n rally with. This has about 290 bhp and 500nm with a lot of restriktions that you must have in group-n rally

maxe1

??????

DuncanG

Do you have a dyno plot showing boost pressure and AFR (air-fuel ratio)?
Have you up-sized the injectors - what's the injector duty-cycle?
Can you check the air temperature at the intercooler outlet?

I don't think its unusual for the exhaust back-pressure to be up to 2X the boost pressure, but I'm happy to be corrected if thats wrong.

What does Per Guldbransen say about it?

maxe1

I run 1.6 bar turbopresure. It only managed 1.4 so i had to close the wastgate hose so get 1.6. I have not up-sized the injectors. The motec is telling me that it unly uses 60% of the total fule capasaty. the ic air temp is between 40 and 60 degrees at the end of a run.

Per guldbransen dosent under stand why my car dosent deliver more bhp.

How moutch bhp and nm should I have whit the upgrades I have????

DuncanG

That doesn't sound right - its very unlike Subaru to leave that much spare capacity.

Maybe you could try contacting Bob Rawle - he knows a thing or two about tuning Stis and mapping motecs.

Btw you'd probably get a better response in 'Drivetrain'

maxe1

http://maxe.myphotoalbum.com/view_ph...rert_Sti_rulle


here you can see the difference.