Rev Limit not changing?

Rev Limit not changing?

Postby hrmax » Sun Apr 15, 2007 11:27 am

My tuner changed the rev limit on my car to 8k, which shows correctly when read back from the ecu, but the car cuts out at 7k still. He said it was the second STI he has seen this with. Anyone else have this experience?
hrmax
 
Posts: 3
Joined: Thu Feb 10, 2005 7:07 am

Postby Freon » Mon Apr 16, 2007 10:03 am

The drive by wire table needs to be modified as well. You're not getting fuel cut at 7000, but the throttle plate is closing itself to about 20%.

Here's an example of the rev limit raised to 7250:

Image
Freon
 
Posts: 700
Joined: Thu Nov 17, 2005 5:50 pm
Location: Indianapolis, IN

Postby hrmax » Mon Apr 16, 2007 10:22 am

Thanks!
hrmax
 
Posts: 3
Joined: Thu Feb 10, 2005 7:07 am

Postby absubtle » Wed May 23, 2007 6:51 pm

Thanks!!! Just had this happen to me today. 05 STI, I was also trying to raise rev limiter to 8k. But it would not go to 8000rpm.
THANKS.
Absubtle
CO
absubtle
 
Posts: 43
Joined: Sun May 13, 2007 2:24 pm
Location: Denver, CO

Postby absubtle » Wed May 23, 2007 8:32 pm

Oh BTW, this 05 STI has Cosworth heads, valvetrain and cams. Mahle pistons, stock rods. Greddy T67 Turbo kit upgrade, w/ supporting mods. So I am not just upping the rev limit for shits-and-giggles...
Absubtle
CO
absubtle
 
Posts: 43
Joined: Sun May 13, 2007 2:24 pm
Location: Denver, CO

Postby porkhang » Tue Jan 01, 2008 7:16 pm

so how would you do this on ecuflash? would this be in target throttle plate position?
porkhang
 
Posts: 3
Joined: Mon Oct 02, 2006 5:57 am

Postby Freon » Wed Jan 02, 2008 5:33 pm

Well, it may be called different things in different versions of definitions. It should look roughly like the one I posted. Some cars do not shut the throttle at redline, though. There is also another background map that I do not suggest messing with.

The above map is actually an intermediate value that drives the actual throttle angle position. Merchgod coined it "desired torque" which isn't a bad idea, though it is sorta an arbitrary unit of measure because it is not tied to any sort of physical sensor. If you are using the latest ECUflash definitions that Merchgod made, it would use his naming scheme.
Freon
 
Posts: 700
Joined: Thu Nov 17, 2005 5:50 pm
Location: Indianapolis, IN


Return to Subaru (all models)

Who is online

Users browsing this forum: No registered users and 1 guest