hello,
I am having a hard time setting my IAC and getting my truck to start cold.
set up:
1986 c10
ls1
prc heads - 10.5:1 CR
btr stage 4 car cam
long tube headers
4inch CAI
ls3 MAF/IAT
holley 102mm TB
Stock replacement IAC
MSD atomic air force intake
stock ls2 injectors
return style fuel system
t56
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I am following tuning material I purchased from ERM tuning. (rest in peace Ed). I have maf and VE very close, especially idle values, When i set my TB to less than .8v and IAC sitting at 40-60 at operating temp. It idles fine, I usually set BRAF for 198 Degree cell and disable timing control while doing it, just to get things running right. I let it sit over night and attempt to do a russK config to do BRAF. IAC count is 310 and wont idle or even start for nothing. Could you give me some ideas to try? attached is current tune and idle scan tonight when attempting to BRAF cold to hot. This is my first tune from scratch on very modified motor/ LS swap. Feel free to ask me why I did this or that in my tune, I am learning and love tuning and want to be able to tune efficiently.
*excuse my really long .hpt file name, it helps me learn and keep things in order when trying new things*