PE Delay?
Thread Starter
Registered User
Joined: Feb 2006
Posts: 5
From: Winchester. UK
PE Delay?
I have recently installed a 6PSI Vortech SC with the Vortech FMU on a 96 TransAm. Since the SC install I have bought Tunercats software for tuning, Autotap and wideband sensor for logging.
From both my Autotap logs and the readings from the O2, when I floor the car I see a delay of 3 to 4 seconds before the car goes into PE mode (i.e. the target A/F stays at 14.7). Even though MAP is at 100Kpa, Coolant temp is at 80 degC, RPM is above 3000, Throttle is at 100%. Even more curious is after coming of the gas and back to cruise, the target A/F stays at 12.2 for approximately 30 seconds.
Is there a delay / hold-off setting for PE, I have trawled through all the settings in Tunercat and could not see it?
From both my Autotap logs and the readings from the O2, when I floor the car I see a delay of 3 to 4 seconds before the car goes into PE mode (i.e. the target A/F stays at 14.7). Even though MAP is at 100Kpa, Coolant temp is at 80 degC, RPM is above 3000, Throttle is at 100%. Even more curious is after coming of the gas and back to cruise, the target A/F stays at 12.2 for approximately 30 seconds.
Is there a delay / hold-off setting for PE, I have trawled through all the settings in Tunercat and could not see it?
Thread Starter
Registered User
Joined: Feb 2006
Posts: 5
From: Winchester. UK
Re: PE Delay?
Can anyone confirm what I am seeing is the norm or not? If you have Autotap do you see the A/F ratio change to, say 12.2, as soon as the throttle is floored or does the ECM take a few seconds to wake up? Also when you get off the gas does it immediately go back to 14.7. Any response would be appreciated as I’m not sure I am chasing a tuning problem or this is normal. Thanks 
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