3 Note: Some PT Cruiser GT, Neon SRT-4, and early 2000s Dodge Ram/Dodge Durango applications use an NGC1 ecm which are not supported, verify what ecm your vehicle uses before ordering. Holley tech support is also very painful to deal with if you do have issues. 2 Note: 2017+ GM 8-Speed and 10-Speed Transmission Control Modules require unlock via HP tuners GM TCM Unlock service before tuning. The factory ECUs just plain work, seem much less susceptible to issues with interference, and are much less picky when it comes to wiring (power supply, etc.). I do have a fresh built LS3 awaiting to go in next. This is the kind of thing that worries me. View Profile View Forum Posts Private Message Tuner Join Date. Just wanted to post this if anybody is wondering the effectivity of doing anything like this for their first time. If you just want a stock tune, go to the HP Tuners repository and download a stock tune to look at 05-15-2016 16. EEX : Free LT1 Tuning Definition (For TunerPro) Trimalyzer : BLM/INT VE Table Tuning Utility. My Projects: (for 1994-1995 LT1) :: EEHack : Free Advanced LT1 Datalogger, Analyzer, and Flash tool. No MIL on after 4 drive cycles so far (it used to come on during 1st drive cycle after fault clearing), and was able to exceed 98mph for a brief second on the chassis dyno at work. i will add more tuning options in my free time or as requested. I would swap coil first and then check the cylinder pressure using a compressor tester. Reflashed these two changes, have driven it 2 days so far, and both changes seem to be 100%. Spark plug, wiring, coil, low cylinder pressure, low flow from injecter ( eng running too lean). Sucked the stock calibration off the unit, disabled catalyst efficiency bank 1 monitoring, and also turned the 98mph max speed limiter up just a tad (317mph is max bit allowed). Only covered to 100k or 120k miles via emission warranty.īought a spare new ECM from the dealership, had them program it with stock code, then used this new module for all "aftermarket" flashing, leaving my original stock ECM under the passenger seat in case failure ever occurs. Speed density tunes will get rid of the MAF sensor and be a MAP sensor style tune. You will have to see what is available on your computer, the OS tab will show you what that computer will be able to do. Did get a quote for new catalyst wye pipe, but at $940 it probably was not happening. Most older truck computers can run a 2 or 3 bar speed density tune to work with forced induction motors. And each of these reflash programs have to present their data in the same formatting as the engineer who programmed the factory ECU with very minor variances in some cases. Ls1 Swap HP Tuners Performance Reflash PCM ECU Flash Service 4.8 5.3 5.7 6.0 More items related to this product Best Selling in ECUs & Computer Modules Save. OK with that, but once MIL on, you don't know if anything else is faulting out behind the light once it is illuminated. When it comes to factory ECU tuning there are many different types of ECU reflash software out there, like HP Tuners, EFILive, MegaSquirt, Cobb, ECUFlash, and so on. Mileage is getting up there but running perfect, so was getting check engine light for catalyst efficiency loss, bank 1. Acquired HP Tuners for my 2009 Chevy Colorado, 5.3L 4x4 crew cab. First attempt at playing with a tuning program, = success.
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