[BlackJack]

Originally Posted by [ion] C2

No.

No. IAT is not used for VE adjustments. It's used for spark, and it only subtracts spark (and only when IAT is very hot).

Here's a fun thread about IAT resistors: http://www.j-body.org/forums/read.ph...0&t=439975&p=1

Yes I am aware that is ONE of the functions of the IAT.

While that was a quite interesting read....I didn't see where anyone either proved or disproved anything throughout all that banter. Was simply a bunch of people batting their opinions back and forth.

Do you have a technical reference? I don't. Only thing I saw in there as any attempt from anyone to show proof of anything was you posting a screenshot of your tuning options showing where spark could be retarded based on IAT vs MAP. However, nobody showed where it is proven not to add fuel.

However, my statement in the earlier thread was made when I was about 50% of knowledge of the capabilities of the PCM and sensors, and it was what I had learned elsewhere at multiple sources, and by a (at the time) reputable tuning source.

Here's a couple of examples but by no means all:
http://www.60degreev6.com/content/IAT_Resistor_Mod
http://www.qcwo.com/technicaldomain/...vs-real-chips/

.....all having references to adding more fuel.

While I do know what values are available to be modified in the available tuning software, I do not believe that ALL values used in calculations in a PCM/ECM are made visible for modification.

I will remain neutral on the subject of IAT's effect on calculations of fuel until someone shows me an absolute no-bullshit list of every formula used for calculation of fuel in a PCM.