jimmybosox
15+ Year Contributor
- 98
- 0
- Jul 1, 2004
-
Columbus,
Wisconsin
OK -
I am just starting my tune, trying to follow the Difinitive Piggyback Tuning Guide from these forums.
I have a 6 bolt swap in a 1997 Talon TSi AWD Tubo. I have the 255 fuel pump and an AFPR. I have stock injectors (what size are they anyway?) and stock SMIC. I have a 3" turbo back exhaust with high flow cat. I have a big 16G set to 16psi with a MBC. I have a K&N cone style air filter and a hard pipe after the stock MAF to the turbo.
I set the throttle points to 30 and 80.
While I'm sitting at idle the STFT is at about -7 and the LTFT is at about 14. I turn the SAFC down at the 1000 RPM NE point and the only thing that changes is the STFT. Am I supposed to get the STFT down to 0 or do I need to take it down to -14 to compensate for the +14 showing on the LTFT? According to the guide, I need to so the same at a few more NE/RPM points to get the fuel trims right before trying to tune the HIGH throttle settings.
Secondly, my logger is showing timing as 29. I don't know anything about timing, but all I've read says that it should be 5. Am I missing something? Could my logger be incorrect or am I not understanding this? Maybe the logger value and the value from a true timing device are not the same?
Thanks in advance for your help.
Jimmy
I am just starting my tune, trying to follow the Difinitive Piggyback Tuning Guide from these forums.
I have a 6 bolt swap in a 1997 Talon TSi AWD Tubo. I have the 255 fuel pump and an AFPR. I have stock injectors (what size are they anyway?) and stock SMIC. I have a 3" turbo back exhaust with high flow cat. I have a big 16G set to 16psi with a MBC. I have a K&N cone style air filter and a hard pipe after the stock MAF to the turbo.
I set the throttle points to 30 and 80.
While I'm sitting at idle the STFT is at about -7 and the LTFT is at about 14. I turn the SAFC down at the 1000 RPM NE point and the only thing that changes is the STFT. Am I supposed to get the STFT down to 0 or do I need to take it down to -14 to compensate for the +14 showing on the LTFT? According to the guide, I need to so the same at a few more NE/RPM points to get the fuel trims right before trying to tune the HIGH throttle settings.
Secondly, my logger is showing timing as 29. I don't know anything about timing, but all I've read says that it should be 5. Am I missing something? Could my logger be incorrect or am I not understanding this? Maybe the logger value and the value from a true timing device are not the same?
Thanks in advance for your help.
Jimmy
