06 tbss. 4" intake with ls7 Maf. Need help tuning it. Also need help with electric fans. Will pay someone for there time. Thank you
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06 tbss. 4" intake with ls7 Maf. Need help tuning it. Also need help with electric fans. Will pay someone for there time. Thank you
You want to correct the MAF table for the LS7 MAF and 4" plumbing...?
Do you have a wideband (if so, which one)...?
Can you correct the MAF table using the Calc.VET (only use the MAFcorrection portion) or AutoMAF procedures...?
Yes correct the maf table.
Do not have wide band yet
Have not tried calc.vet
Ok, without wideband you can only correct a very limited range of the MAF table(s) using LTFT's...
you would log LONGFT1/2 and FUELSYSA/B;
you would create a transient filter (to exclude throttle transitions) which also excludes non Closed Loop;
you would create a map of LONGFT1 or 2 or average to match your MAF table, apply the transient filter, and apply the map to the MAF table;
since you have no wideband you would have to eyeball extrapolate the MAF curve to the higher frequencies...
You REALLY do need a wideband for correcting your MAF table(s).
Post a log of MAFFREQ2, MAF, LONGFT1/2, FUELSYSA/B, ETCTP, RPM, ECT, IAT, MAP...
Post your tune file.
Which PCM/ECM do you have...?
Attachment 18771
Attachment 18772
here is the stock files
Taz, thanks.
Attachment 18778
here is a log with the intake. idle to 3000rpm. I pasted the MAF low and high frequency conversion tables from a 08 LS7 and it will idle. but still hiccups every now and then. i also have a IAT sensor break out harness on this infront of the MAF. thanks