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Re: How true is it when they say at WOT the Corvette goes into Open Loop?

Subject: Re: How true is it when they say at WOT the Corvette goes into Open Loop?
by iCorvette on 2009/8/9 18:55:00

Quote:

mseven wrote:
Quote:
383tpimachine wrote:OK so since my tune is ALL out of wack Im losing alot of power when going WOT?
this is probably why it bogs so bad at WOT

There are several inputs/look up tables that play a role in calculating PE, and or the performance in WOT. While timing is a factor ("bogging" description}, the calculated PE AFR also includes the last BLM used/seen (along with other tables) to formulate AFR at WOT. If entering PE lean, the overal PE/WOT AFR will be affected (likewise if entering PE rich). Depending on when you enter PE (RPM vs load), this can change the afr when entering PE. This is why developing the closed loop area of the tune should be done first before tuning for WOT.

wonderful insight.... would it not that the maximum airflow vs. rpm must be adjusted for an engine with greater ability to move air. and I should max it out to a 255 default providing it with a greater range sensitivity.

And conversely with stock ceilings per rpm assigned, this can fool the maf into thinking X amount of air is moved vs. the correct albeit more volume of air is actually moved, henceforth creating a lean condition,

and when the throttle depending on where I trigger PE can result in the concomitant lean condition as you metioned above.

is this correct?

ALDC