DrkPhx
September 2nd, 2009, 01:50 AM
Hi,
I will post a log later, but I wanted to see if anyone could help.
I'm tuning a friends 00 TA with a small cam (232/236 .595 113 lsa) and FAST 90mm (the TB is NOT drilled) and I need some help. It's a M6 car. It idles really nice (except with the AC on) at 800 rpms with no problem. However, there is an odd problem that happens on deceleration I can't eliminate completely. When the clutch is engaged and released the idle will dip to 450-650 rpms for a second then come back up. I lowered the idle speed to 775 rpms which made it less noticeable, but it's still there and seems to get more pronounced as the car and ECT warms up.
I've disabled the Throttle Cracker to eliminate the hanging idle, but the problem was still there when it was active. Adding idle airflow and spark will make it worse. The spark values match in all timing tables to prevent any fluctuations. Fuel trims are ok. I haven't put a WB on it yet, but will later this week.
Any help or input is appreciated.
I will post a log later, but I wanted to see if anyone could help.
I'm tuning a friends 00 TA with a small cam (232/236 .595 113 lsa) and FAST 90mm (the TB is NOT drilled) and I need some help. It's a M6 car. It idles really nice (except with the AC on) at 800 rpms with no problem. However, there is an odd problem that happens on deceleration I can't eliminate completely. When the clutch is engaged and released the idle will dip to 450-650 rpms for a second then come back up. I lowered the idle speed to 775 rpms which made it less noticeable, but it's still there and seems to get more pronounced as the car and ECT warms up.
I've disabled the Throttle Cracker to eliminate the hanging idle, but the problem was still there when it was active. Adding idle airflow and spark will make it worse. The spark values match in all timing tables to prevent any fluctuations. Fuel trims are ok. I haven't put a WB on it yet, but will later this week.
Any help or input is appreciated.