Trifecta Performance is pleased to announce the availability of custom ECM programming for your Gen IV vehicle! As with all other custom programming from Trifecta, no PCM swap is required, and crank relearn is never an issue. We provide the flexibility of a full custom tune with the ease of a hand-held device.

Custom programming has never been easier to get - to find out how simple our custom tuning service is, check out http://www.trifectaperformance.com/6Steps.

We can now offer full custom programming for:

LS2 GTO
LS2/LS3/LS7 Corvette
All new body style GM trucks and SUVs (exc. Diesel)
LH6/LS2 Trailblazer
LS4 'W body' cars
LS2 SSR
LS2 Cadillac CTS-V
...and many more!

Regarding the T42 and T43 transmission controllers... We are still working on adding support in the GT Tuner for these, but the T42 support should be finished within a few weeks, with the T43 support just behind it.

Introductory price is $250 for Gen IV custom tuning (regular price is $299.99). We will run the special price through the end of March. Customers who order a tune before the T42/T43 support is finished, but need T42/T43 changes will receive a voucher for a free tune update redeemable after the T42/T43 support is finished and tested.

Click here to order: https://www.trifectaperformance.com/order