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HOURS of Operation
Open Monday - Friday 9A-5P EST
QUESTIONS? GIVE US A CALL! 1 (765) 378-4908
We're closed on major holidays.

Standard order lead time for STANDALONE WIRING HARNESSES is estimated to be 12-14 weeks from date of purchase.
Need it sooner? Give us a call to discuss expediting. Limited slots available.
All other items typically ship within 3-5 business days unless specified otherwise.

LS and LT Retrofit Specialists
Call to order today

Home > ECM Reprogramming

ECM Reprogramming

Let Speartech reprogram your computer to take full advantage of your fuel injected engine. Doing your own programming? We offer Off Board Programming Harnesses for benchtop programming without the vehicle. We also offer factory reprogramming if you're starting with a new PCM or just need a spare.

Typical computer reprogramming for retrofitting engines includes:

Disabling the anti-theft (VATS).
Disabling EGR, A.I.R., evap system, post-cat oxygen sensors on OBD II systems and other emissions equipment for a clean looking installation. (Available for projects not requiring emissions)
Lowering the cooling fan turn on temperature. The factory setting is typically 226 F--very HOT! It may help pass an emissions test when new, but the engine is much happier operating at a lower temperature.
Gear ratio and tire size correction/performance tune.

Please call to setup your ECM programming order. (765) 378-4908