I've been looking at Craigslist and saw a GSR, EPEC system for Fords EEC SD setup. Guy is selling it for $275. Question is if it's worth it? What's the opinion?

 

It looks like a decent product, but getting support for something that was released 10+ years ago may be tough.

Reference this article: FRPP Extreme Performance Engine Control - 5.0 Mustang & Super Fords Magazine

 

he noted that "One could download the software and manual from it.." I just didn't know if it was worth it versus Tweecer or some other hardware.

 

That was my point....

FWIW a manual can be downloaded here: http://birnschein.microforge.de/xr2i...s/EPECbook.pdf

 

This isn't a tuning device. It's a separate stand alone computer. $275 will get you an outdated system, software that probably will not run on a modern computer and little to no support at all.

There are better solutions now, especially with emulation devices like the Tweecer and QuarterHorse