Quote:
quote:Originally posted by Jason_L
[This was roughly how I originaly looked at it.. I'm going in circles  Well, at least I qualified my statement with "If the post intercooler temps are lowered the same amount"... I should have figured that the one part I hadn't looked at yet would be the one to break my results
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The aftercooler will reduce the temp by X ammount of Degrees but it won't lower the Boosted charge to ambient air temp. I think our ex-resident eng. 3Bar mentioned that the IC has a 80% efficiency. and he asumed that the intake air temp was 80*. that is incorrect because the air is sucked from inside the engine bay, compounded by hot pipes. In a warmer day, the I/C eficiency will be lower. This is the reason why you see high Boost levels in warm days, and Low Boost in cooler days. The PCM is correcting to keep "optimum Performance".
If we take control of the Boost controller with a CAI, you will increase HP.
One last example of hot air and how fast it can be warmed:
A hair Dryer is just a fan with three or four metal filaments that gets warmed, the air passes thru them in less than a second and it gets heated to over 100*... It gets wamed this fast with just a small contact area...
Ian