Some predator questions
03-29-2005 | 08:44 PM
#1
Some predator questions I recently picked up a Predator from a board member on another board (GTO board). Saturday we had a dyno day. The car pulled an avg of 292hp 310tq 100% stock. I installed the preadator tune and it pulled the same numbers.
Here is the dyno sheet (only 2 of the runs as all the runs were very similar)
With the tune the AF did lean out about .5.
I did some 3rd gear pulls on the street and only saw 19deg of timing. Isn't this a bit low? The car is a 2004 GTO (10:1CR). I see people running 26-7deg. The predator will allow me to go up a bit, but I'm still a ways off.
No knock retard, o2's in the mid to high 900s.
Any advice? I am a few minutes away from dumping this preadator and getting HPTuners or EFILive..
Here is the dyno sheet (only 2 of the runs as all the runs were very similar)
With the tune the AF did lean out about .5.
I did some 3rd gear pulls on the street and only saw 19deg of timing. Isn't this a bit low? The car is a 2004 GTO (10:1CR). I see people running 26-7deg. The predator will allow me to go up a bit, but I'm still a ways off.
No knock retard, o2's in the mid to high 900s.
Any advice? I am a few minutes away from dumping this preadator and getting HPTuners or EFILive..
03-29-2005 | 09:21 PM
#2
Your instincts are right.
My F-body Predator did push +6 degrees of timing and that
-should- show up as -something-. But I hear the GTOs are ping
prone and maybe the Predator for those, is less aggressive
on spark. Also that people with GTOs are seeing positive
LTFTs from factory tunes; if so in your case, you can't trust
that the Predator did anything to the mixture (it didn't
touch my PE table with the canned tune); the difference
could just be in how you rolled on the throttle, which trim
cell you were in just before WOT.
My F-body Predator did push +6 degrees of timing and that
-should- show up as -something-. But I hear the GTOs are ping
prone and maybe the Predator for those, is less aggressive
on spark. Also that people with GTOs are seeing positive
LTFTs from factory tunes; if so in your case, you can't trust
that the Predator did anything to the mixture (it didn't
touch my PE table with the canned tune); the difference
could just be in how you rolled on the throttle, which trim
cell you were in just before WOT.
03-29-2005 | 09:25 PM
#3
Originally Posted by jimmyblue
Your instincts are right.
My F-body Predator did push +6 degrees of timing and that
-should- show up as -something-. But I hear the GTOs are ping
prone and maybe the Predator for those, is less aggressive
on spark. Also that people with GTOs are seeing positive
LTFTs from factory tunes; if so in your case, you can't trust
that the Predator did anything to the mixture (it didn't
touch my PE table with the canned tune); the difference
could just be in how you rolled on the throttle, which trim
cell you were in just before WOT.
My F-body Predator did push +6 degrees of timing and that
-should- show up as -something-. But I hear the GTOs are ping
prone and maybe the Predator for those, is less aggressive
on spark. Also that people with GTOs are seeing positive
LTFTs from factory tunes; if so in your case, you can't trust
that the Predator did anything to the mixture (it didn't
touch my PE table with the canned tune); the difference
could just be in how you rolled on the throttle, which trim
cell you were in just before WOT.
03-29-2005 | 09:35 PM
#4
On the otherhand I just looked at a stock 2004 GTO PCM .tun file in EFILive (Demo mode) and it looks like stock timing is ~18deg and with the IAT's in the 80-90deg range its subtracting -1deg.
