Manual timing controls (Happy ****) would be cool, but I don't have the luxury of an INTENSE PCM to make that work. I'd love to do it by modifying a data line rather than mess with a sensor'* output.

Understood. This was based on the assumption that we were talking about Paul'* car. S1 is of course different.

Agreed that this would be a better solution but I am just playing with an idea that'* practically free. I was told that the IAT trick will gain up to 2 degrees of times max.

Interested to see the IAT tables.

So tell me, is that all I need is a PCM reburn and a happy **** :?: That would work best with the meth injection.
Rogue, PM me with what new toys I would need.

My thing about it all is that if you're gonna spoof the IAT....Then you're gonna have to spoof other sensors so the PCM doesn't figure something stupid out and the recalculate for it.

The MAP sensor alone is gonna alert the PCM to an out of wack reading and compensate.

How will the manifold air pressure sensor detect this :?:

According to Scott there are some years (grand prix, regals, etc...) that do add timing based on cooler air temps, however this is from a 2000 stock binary file.

Thanks Rogue. Well that about wraps it up for this useless idea...

My air temp never goes above 104F and even with 90F temps in hot soak conditions has never gone over 140F, so 1* of timing is not much of a prize.

But that does tell us alot about the true functionality of the IAT with respect to timing control.

Interesting. I wonder if a 93 OBD1 PCM is as meticulous in it'* calculations? Considering the sole purpose of my MAP sensor is strictly for boost indication to the gauge.

My 95 L67 doesn't even HAVE a MAP sensor. So based on that bit of knowledge, the IAT trick MAY work with Series 1 (OBD1) cars. But why did Don gain timing on his 95 L36? Doesn't the 95 L36 have a MAP sensor?

I'm lovin' this topic.

Since it is so insignificant, I'm leaving it tricked for a few months......just have to try it to truly find out.
In the meantime, I will explore the other options of being able to turn up the timing into the threshold of headgasket blown piston detonation.