870 ECM DIY Tuning Options

Reply Subscribe

Thread Tools

Search this Thread

May 22, 2011 | 08:52 PM

Gen3FTW

Thread Starter

Junior Member

Joined: Apr 2010

Posts: 43

Likes: 0

From: North Dakota

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

May 22, 2011 | 09:26 PM

Fast355

Supreme Member

iTrader: (2)

Joined: Jan 2005

Posts: 10,450

Likes: 508

From: Hurst, Texas

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