870 ECM DIY Tuning Options

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05-22-2011, 08:52 PM

Gen3FTW

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Car: 1985 Z28 Camaro

Engine: 385 Stroker

Transmission: 700R4

Axle/Gears: 4:11

870 ECM DIY Tuning Options

Whats the best and cheapest option to tune an old 870 ecm on a 1985 305 tpi z28 camaro?
Thanks

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05-22-2011, 09:26 PM

Fast355

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Car: 1983 G20 Chevy

Engine: 305 TPI

Transmission: 4L60

Axle/Gears: 14 bolt with 3.07 gears

Re: 870 ECM DIY Tuning Options

Quote:

Originally Posted by Gen3FTW

Whats the best and cheapest option to tune an old 870 ecm on a 1985 305 tpi z28 camaro?
Thanks

May not be the cheapest way, but this is what I would do if it were my car. I wouldn't touch the old 85 ECM, but swap it for a speed density TBI style ecm. Swap on a MAP sensor. Eliminate the burn-off module, relays, and restrictive MAF sensor. Repin a few wires to match the TBI wiring diagram, swap this baby in there, flash it with a base TPI calibration and get to work tuning it.

http://dynamicefi.com/EBL_Flash.php