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Stock TPI vs Super Ram plenum volume Question
Hello All: I have been fighting an rpm sag and stall on decel for quite a
while. Man trans app, 355 cu in. I have eliminated the following as the
cause of problems.
1) IAC
2) Spark Timing
Final problem seems to be decel enleanment. When I let off the throttle
decel enleanment kicks in and the o2 sensor goes extremely lean. There is a
part of the code called KSSAEPW, @ C4F7 in 89 165 code. 'MSEC' DFCO STALL
SAVER AE PULSES. Stock is 1.95 MSEC. I have increased this by 230%
(Guestimate of Superram internal volume vs stock tpi) and the sag is almost
not noticable.
I am asking if anyone knows the exact internal volume of the SuperRam vs the
Stock tpi? (or at least close).
Last time I measured, the SuperRam was over 5 litre's of internal volume, I
have never tried to calc what the stock tpi is.
The 02 sensor still drops on decel enleanment but now as the rpm's drop, the
ecm is kicking in a bit more pw at a higher rpm to stop the sag.
Mark