TB removal and then some!!!

[DRM500RUBYZR-1]

Originally Posted by XfireZ51

Sorry Marty, but there’s no way GM would allow the car to run at anything below the point where the ECM is not LEARNING and modifying the fueling for BLMs. No matter what the conditions. That’s part of what cold weather testing is all about.
The coolant needs to be at >80C for that. Anything below that for other than warmup is not what the calibration is looking for. That doesn’t mean it won’t run but it defeats the whole point of Closed Loop operation.

Well I guess I should expect a recall notice then.

The car feels MUCH stronger at 170 degrees.

I am no engineer, but it has behaved that way for 20 years, and I am good with it.

I won't tell GM, so let's keep it a secret.

Marty

[XfireZ51]

Originally Posted by DRM500RUBYZR-1

Well I guess I should expect a recall notice then.

The car feels MUCH stronger at 170 degrees.

I am no engineer, but it has behaved that way for 20 years, and I am good with it.

I won't tell GM, so let's keep it a secret.

Marty

Most of that were “tricks” to fool the ECM. The issue involves emissions, mpg et al. Not a question of performance which really deals w Open Loop. I’m just stating fact on how the calibration works not making a judgement call.