For example, on Saturday when I wiped out the VE modifiers and attempted a logging session, I started at outside air temp of 37 degrees. After about 15 minutes, IAT maxed out at around 70 degrees. I pulled into the garage, read the data, made some changes and went back out to confirm. On my 2nd trip, IAT's never went below 90 degrees.
How much did you lower the compression when you installed the supercharger?
None. I figured the stock LS2 has more compression than the LQ4, so I actually went down a pulley size on the S.C.Originally Posted by statesman
How much boost are you seeing?
About 7psi if I remember correctly.
Do you have a MAF sensor that you can temporarily enable?
No, but I've thought about it. I'd have to re-do my PCV and air intake though.
My suggestion to you is to abandon SD... get a MAF sensor and run a MAF only tune. At 7psi you should just avoid pegging the MAF. Just be aware that GM utilized two different MAF sensors, one reads up to 512g/s (which is the one you want) while the other only reads up to about 465g/s.
The problems you are having with SD is firstly, that your IAT is getting badly heatsoaked and... secondly, that SD in general has another problem which not many people know about, but it's basically a compromise which GM had to make... and it means that you'll never get SD perfect even if you never suffered any heatsoak at all. Combining those two issues means your tune will always suck. Your only other real option is to create three tunes, summer/winter/fall... and keep swapping tunes as the seasons change.
Thank you. Will take it into consideration. Is there a commonly used acronym for that config? OLMAF???
Why are you so obsessed with running open loop?
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