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COS 5 Help Needed Here...Please
Hello,
I am running a P1SC Procharger on my 99 T/A with COS 5 SD. The car runs 7-8# of boost, using a 2 Bar MAP, 60# Motron injectors, P&P 243 heads, LS6 intake, TR 224-112 cam and the MAF is disabled.
Since I logged the attached data, I have fixed the high ECT problem (wiring instructions included with Procharger fan had polarity reversed).
The main issues I have are:
- When coasting, the car acts like the cruise control is set at 35-40 mph and after you come to a stop the car idles at ~1200rpm for a few seconds before it drops to 900rpm, which is still higher than the target 750-800 it is set to.
This is annoying and I have no idea where to start.
- While coasting, my AFR goes to ~ 12:1. When I give it any throttle, it will get back to 14:1 to 14.6:1.
DFCO? I did log a couple of idle pids for airflow. I hope they help.
- Before the supercharger, I had a very good N/A tune done with CALC.VE. I used AUTOVE to get to this point with the supercharger.
I feel nervous to smooth the main and boost VE tables very much. I could really use a little guidance. WOT above 105kpa, my AFR drops to ~ 9.2:1 and timing is retarded to 13*. I would guess ECT is affecting these to some level.
Anyway, I am new to FI SD tuning and any help would really be appreciated.
Thank you