is it normal(ls2)
05-04-2009, 12:31 PM
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is it normal(ls2) Is it normal for the ls series engines to drop rpm quite slowly after you have rev'ed it. It takes my LS2 engine far more time to decrease the rpm than to rise. It's almost embarrasing to rev the engine it in front of people. It's a brand new engine with a LS controller kit from gm.
05-04-2009, 02:40 PM
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well its a DBW system.
I have a GM TechII tester. But I have read somewhere that the ECU that GM delivers with those controller kits are locked and unable to retune?
But thanks. That cleared things up a bit. Had a hard time believing it was normal.
But what am i to do now then?
I have a GM TechII tester. But I have read somewhere that the ECU that GM delivers with those controller kits are locked and unable to retune?
But thanks. That cleared things up a bit. Had a hard time believing it was normal.
But what am i to do now then?
05-04-2009, 04:05 PM
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part number is
19166568 for the kit.
Controller only is P/N
19166570
There were paperwork with the kit as how to install it in any vehicle. But the manual is somewhat lacking info, and not helpfull in a few critical areas.
19166568 for the kit.
Controller only is P/N
19166570
There were paperwork with the kit as how to install it in any vehicle. But the manual is somewhat lacking info, and not helpfull in a few critical areas.
05-04-2009, 04:55 PM
#7
Your sure that your pedal is not sticking right? I know it s a dumb question but sometimes pedals get stuck up against carpeted consoles and DBW pedals dont have as strong of a return spring imo.
It could just need to be tuned. Does the car have an IAC in the throttle body? I am really not familiar was DBW setups but even less familiar with that controller kit you have, ive actually never heard of it.
It could just need to be tuned. Does the car have an IAC in the throttle body? I am really not familiar was DBW setups but even less familiar with that controller kit you have, ive actually never heard of it.
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05-05-2009, 05:29 AM
#9
Get out and watch how fast the TB closes when someone revs the engine. and lets off the gas.
What flywheel/clutch set up do you have? A heavier rotating assembly will spin longer.
What flywheel/clutch set up do you have? A heavier rotating assembly will spin longer.
05-05-2009, 08:54 AM
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Not sure what MEFI stands for?
But the controller system doesn't have a pcm. Only an ECU. When i hooked up the 4l65e i then again needed a second controller kit since it wasn't a pcm. So bought a second controller unit. This time a transmission controller unit. Spliced the ECU and TCU together and runs fine.. It just revs very slowly on its way down.. Like 3 or 4 seconds from 5/6k rpm.
It's not the carpet either.. Wish is was though.
My flywheel is a standard 4l65e flywheel as well as the converter.
Thanks for the help so far
But the controller system doesn't have a pcm. Only an ECU. When i hooked up the 4l65e i then again needed a second controller kit since it wasn't a pcm. So bought a second controller unit. This time a transmission controller unit. Spliced the ECU and TCU together and runs fine.. It just revs very slowly on its way down.. Like 3 or 4 seconds from 5/6k rpm.
It's not the carpet either.. Wish is was though.
My flywheel is a standard 4l65e flywheel as well as the converter.
Thanks for the help so far
