72Z/28

Hi Guys
I have been having issues with tuning my camaro with LS6 engine. It has got a cam (not sure about the specs as bought the car built by previous owner). It has the following:

stock heads
FAST 92mm Intake manifold
FAST 92mm Throttle Body
long tube headers
upgraded with LS3/LS7 Card Style MAF
4" intake tube.
Wideband fixed on Driver Side Header

I have recently bought the hptuners two weeks ago as I am fed up with tuners doing crapy jobs. Basically, I am new to tuning and stuff, but I have gained some knowledge from watching videos on Youtube.

I know for sure the tune is not right as the engine dies/stalls when coming to a stop sign especially with AC running. Sometimes just revving the engine, the idle dips below the desired rpm and dies. Also, noticed the IAC count is two low.

Tried to increase my base running airflow but without any luck.

I am attaching my log file (engine running at idle) and the data file hoping somebody to help me out sorting the tuning issues.

Will appreciate your support guys.

dw456post

Look under Spark---Idle advance---In park and in drive. You have very little spark in the in drive table from 0 rpm to 1200 rpm and down to .40gsec. Make that whole square 18 on both charts(drive and park ) until you get it sorted out. Then go back and make it look like the stock chart except with higher numbers. Let me look some more.

dw456post

Why do you have P0101,102,103 in the DTC's set to no mil light? If the maf is a problem, you should want to know.

dw456post

Your intake air temp seems to be off the chart. Are you using a different sensor?

dw456post

Log dynamic air. Use the same measurement as your base running airflow has---lb/h or whatever it is in.

dw456post

And go for a drive and log . Just idle is not going to see much

72Z/28

Honestly I am not sure why. I am just learning and have not noticed that.

Thanks for the input, I am going to change that.

72Z/28

The car used to have a two wire IAT sensor tapped into the filter flange, and the MAF sensor was the SLP MAF with three wires.

just recently changed that to LS3/LS7 style MAF with integrated IAT sensor.



so where should I go in the editor to fix that?

72Z/28

Thanks for the input. I did notice the idle spark is low compared to other tunes I have seen. So I am going adjust that. Unfortunately, I do not have the stock chart.
Looking forward to getting more inputs.

72Z/28

will have a look again and try to adjust that.
I am going to go for a drive once I get some of the stuff sorted out.

thanks man