Is 3/4 throttle better than WOT (as far as ECM is concerned)

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Nov 26, 2000 | 10:37 PM

Mark_ZZ3

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Joined: Jul 1999

Posts: 1,466

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From: Alberta, Canada

Car: 1989 Camaro-1LE

Engine: TPI(s)

Transmission: 5 speed (MM5, MK6)

Axle/Gears: 3.45, 3.73

Is 3/4 throttle better than WOT (as far as ECM is concerned)

What does the ECM ignore at WOT?

O2? MAF?

If it does ignore the O2, would it make sense to max your TPS at 3/4 throttle (whatever the measurement is B4 WOT)?

This is in regards to a NO2 setup.

Mark.

Nov 27, 2000 | 11:49 AM

Grumpy

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Joined: Jun 2000

Posts: 7,554

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From: In reality

Car: An Ol Buick

Engine: Vsick

Transmission: Janis Tranny Yank Converter

Quote:

Originally posted by Mark_ZZ3:
What does the ECM ignore at WOT?

O2? MAF?

If it does ignore the O2, would it make sense to max your TPS at 3/4 throttle (whatever the measurement is B4 WOT)?

This is in regards to a NO2 setup.

Mark.

Actually at WOT it goes into a mode called Power Enrichment. It varies some by program but it is an open loop mode so the O2 information isn't used as feedback to the ecm for calculating AFRs.
All the other sensors are used, just the system is open loop.
Grumpy http://www.gnttype.org/carofthemonth...omdetails.html