Any HPTuner Gurus Here...HELP PLEASE
Thread Starter
Le Mans Master
Joined: Oct 2006
Posts: 6,080
Likes: 0
From: Houston TX
Any HPTuner Gurus Here...HELP PLEASE
That would be willing to review my tune and suggest what I might change to fix my surging idle, bucking in 1st and 2nd, dying randomly at lights, and permeating my clothes and interior with fuel smell carand P0106 code ( I have allready replaced the MAP sensor )? I am at my wits end with scanning and trying to get help on other sites. Most of the time I ask and the only response I get is "read the stickies" Well, Ive read the stickies, and downloaded the book. Still don't get it. Gonna throw in the towel soon and just pay a tuner to tune it then get rid of all the tuning software.
HELP........PLEASE
2003 Z06
Mods:
Kooks LT's
Kooks ORX
Pacecars
TR6 Plugs @ .34
MS4 Cam "239/242, .649"/.609" 110 LSA
PRC Dual valve springs
160 Therm
25% UDP
7/32 hole drilled in TB Blade ( recommended by another board )
HPTuners ( almost worthless at this point )
NO WIDEBAND
HELP........PLEASE
2003 Z06
Mods:
Kooks LT's
Kooks ORX
Pacecars
TR6 Plugs @ .34
MS4 Cam "239/242, .649"/.609" 110 LSA
PRC Dual valve springs
160 Therm
25% UDP
7/32 hole drilled in TB Blade ( recommended by another board )
HPTuners ( almost worthless at this point )
NO WIDEBAND
Last edited by Slow Z06; May 30, 2008 at 08:45 AM.
Melting Slicks
Joined: Aug 2002
Posts: 2,737
Likes: 2
From: California USA
You should never need to drill holes for tuning. Change the throttle body out, then try:
1 - Make sure STFT are near 0 or slight negative. Slight changes proportion to the STFT amounts can be made to the MAF or INJ at idle. If you changed one or both, try adjusting injectors first.
If STFT are positive, increase MAF data (at logged frequencies for idle; in 3000+ range) and/or decrease fuel inj flow rates.
2 - Try INCREASING Running Idle Airflow. This will likely give you a huge improvement.
3 - If, after your fuel trims are zero, log your MAF data, that is the data that needs to be input in the idle airflow. You will likely need to convert it from lb/min to gm/sec. Or you can increase it a few percent at a time and test.
4 - Tuning is an ongoing learning experience. Might be a good idea to let someone used to doing it do it the first time, then you can make adjustments w/your tuning setup.
1 - Make sure STFT are near 0 or slight negative. Slight changes proportion to the STFT amounts can be made to the MAF or INJ at idle. If you changed one or both, try adjusting injectors first.
If STFT are positive, increase MAF data (at logged frequencies for idle; in 3000+ range) and/or decrease fuel inj flow rates.
2 - Try INCREASING Running Idle Airflow. This will likely give you a huge improvement.
3 - If, after your fuel trims are zero, log your MAF data, that is the data that needs to be input in the idle airflow. You will likely need to convert it from lb/min to gm/sec. Or you can increase it a few percent at a time and test.
4 - Tuning is an ongoing learning experience. Might be a good idea to let someone used to doing it do it the first time, then you can make adjustments w/your tuning setup.
Last edited by 427CPE; May 30, 2008 at 10:12 AM.
