Search:

Is it possible that exhaust back pressure or exhaust temp changed with the cross winds resulting in these weird readings? How much do each of these normally affect fuel trims?

I was driving in and out of the cross wind. It was occasionally blocked by the hills that the interstate was carved through. The wind itself was pretty constant. When I was in the crosswind the trims...

Took a trip across Wyoming last week and decided to do some high altitude logging and see how it affects my tune accuracy.

What I found made no sense. In the 20 mph crosswinds, my STFT went to -13...

It should. The stoichiometric value is really a descriptor of the fuel and all the other calculations are based off of it. Theoretically, you can put any fuel through the engine and adjust the one...

I am not an expert on e-85 by any means, but if i understand the system properly, this will depend on which OS you are using. if all you are doing is switching to E85, your airflow numbers will be...

For some situations, like getting the engine to simply idle when the tune is known to be way off after heavy modifications. It can be necessary to "ballpark" the numbers enough with this method and...

Adding a precentage is as easy as multiplying by 1.xx where xx is the percent you want to add. 1.10 will add 10%. 1.20 will add 20% and 1.30 will add 30%. this can be used for any percentage you...

I've been attempting to get my tune correct for a while, but have been meeting success only to the point of "good enough." I've accomplished a .98 lambda tune on the VE with MAF Failed, then tuned...

Doing a little digging through wiring diagrams, I found that C1-Pin 32 needs a ground signal for the 0411 PCM. I got that fixed and the truck is now reporting clutch activity. Unfortunately, The...

I've taken my 2003 S-10 and transplanted a v8 into it with a corvette t56, custom adapter and an autotrac transfer case.
The issue I'm having is that i cannot get the transfer case to shift into Low...