engineermike

363 LT1
PT-76GTS at 13 - 20 psi
Stock ECM, 84 lb/hr injectors/Impedence converter, Crane HI-6TR

I tuned mine for cold weather at about 11.8/1 Air Fuel ratio. In the summer, that will drop to about 10.8/1. The difference isn't as much as most people think. Sure 10.8 isn't the greatest for power, but keep in mind that a stock Ford Lightning runs about 10.5/1.

Pro's of the stock ECM:
- Gauges and VATS key system work fine without having to piggyback computers.
- Cost. Impedence converter and TunerCAT total about $500 versus $2500 for many of the aftermarket ECM's and piggyback harness.
- Factory tune is pretty dang good in most cases, so you're already in the ballpark.

Con's of the stock ECM:
- Doesn't compensate for temperature when MAF is max'd out.
- Reportedly not as responsive as aftermarket (on throttle tip-in).

JWBerk94Z

What is a BS3? Two posts here mentioned it, but I am not sure what that stands for or who makes it.

RealQuick

Big Stuff 3.....

If you google it, you should find something.

JWBerk94Z

Ah, thanks. I have heard of it before, it just didn't click.