Car has a stock bottom end ls1 with heads, intake, cam, and headers. At partial or wide open throttle the car loses power approaching 3000 rpms. I have been having this issue for weeks now, Any insight will be appreciated.
Car has a stock bottom end ls1 with heads, intake, cam, and headers. At partial or wide open throttle the car loses power approaching 3000 rpms. I have been having this issue for weeks now, Any insight will be appreciated.
any dtc's?
It doesn't have to be perfect, it just needs to be done in two weeks...
A wise man once said "google it"
actually the tune has issues, first you are telling the maf to fail by setting the maf fail freq to 0 but then you are telling the ecm that everything is ok with the maf by setting the 3 maf dtc's to no error reported, big no no. I would start there and then retune completely. I'm honestly surprised the vehicle even starts with this big of a glowing issue.
It doesn't have to be perfect, it just needs to be done in two weeks...
A wise man once said "google it"
Can't set MAF stuff to no error reported. Set back to stock for running MAF, or set to first error if you're running SD only. See if that helps things out.
JTC Performance - Authorized HP Tuners Reseller
Remote performance tuning
Those cars have no limp mode at all. The datalog is not very useful because you are logging a lot of unneeded things. There is not a single WOT pull in that log.
It seems the lack of power is caused by too low timing advance but it's hard to know without a proper datalog.
9 sec Montecarlo SS
It's very likely a lean condition. While you're sorting your tune, I'd also check the fuel pressure.
There's a bit of knock on your log too, probably pulling power out as you accelerate, is that what your 'feeling' ?
Gen3 L59/4L60E LS3 cast manifolds, Small Cam change, 2800 Convertor, MPVI, using MTX-L for wideband tuning
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