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This has already cost me 1.5 hours today searching for a stock 4.8L tune. We do a bunch of LS swaps and almost always need a new stock tune to start from. If you were wondering what you could do to...

Thanks for the suggestion. The customer has the car back right now, so I can't answer what happens in CL. Although, I've tuned 100+ GM vehicles with OL and Wideband, across all ECU types, and never...

The tune file used to generate the log is attached. Other than disabling closed loop for tuning, and turning off COT, it is a stock tune. The only mod on the car is a cat back exhaust. Stock airbox,...

I'm not at my tuning computer, but will post the tune in a few hours. I made no changes to the MAF table, and the table graph is smooth.

The thing I've never seen before, if you look at the log,...

We're tuning a customer's 2002 V6 Camaro. At WOT, the MAF frequency shows very strange behavior - it climbs steadily into the low 9000 Hz range, then suddenly jumps about 1000 Hz upward at around...

Nevermind - as often happens, as soon as I posted I realized the problem. P0101 was the clue - it was reverting to VE due to excessive difference between VE and MAF calcs, which in turn was due to...

The car is a 2002 Z06, recently swapped in LS3 with 24x reluctor and cam sensor, 90mm LS2 (?) TB. I'm currently tuning MAF only, OL with wideband. When I reach a certain amount of load and RPM -...

Thanks much Eric, I was already thinking along these lines (and wondering about those funky axis values in the temp correction tables :) I suspected the intercooler temps were increasing run by run,...

I posted below on the issues I am having tuning a customer's 2010 GT500, with VMP 2.3 supercharger. We had it on the dyno again today, and I have more data to report on the problem. We made three WOT...

Here is the stock tune file, as loaded by the local dealership:

Hi,

I posted this thread earlier:

http://www.hptuners.com/forum/showthread.php?45535-Help-with-2010-GT500

Anyone on this thread have any advice for me? I'm stumped as to what to try next ......

Tuning a customer's GT500. Primary mods are 2.4L VMP supercharger and 65mm TB. Tuned it for the first time this Summer, ran great and cranked out 600 RWHP. Car came back because it failed DEQ - rear...

Is the "load with failed MAF" not available for some models? I don't see it in the editor on the 2010 GT500 I'm trying to tune ...

Is there another place to tune something similar?

Thanks much...

My experience tuning two different 2010 SS M6 with a 227/235 114 cam (3* overlap at .050) is that, for some reason, the cammed Camaros are more susceptible to surging at light throttle/low RPM/low...

Actually, not quite. It is true that a large cam will cause some unburned A/F to leak out the exhaust valve. Additional partly burned mixture is exhausted due to the partial misfire condition caused...

Posting this in case it helps other folks ...

Installed a cam and CAI in the owner's 2010 Camaro SS. Fairly mild cam, 227/235 on 114 LSA, .600+ lift. Dialed the MAF in closely, using latest 2.23...

I've been involved with quite a number of LSx swaps into older vehicles. In general, I'd only recommend a factory-style ECU with milder cams. If you do go factory-style, the only place I can...

Thanks, this is way, way faster. As a veteran C++ programmer, I'm glad to see there are still advantages to coding "close to the iron". Too bad I didn't have this yesterday when working on a 2010...