If your doing heads and cam definitely do a dyno tune. Trust me it will cost less in the long run. Only thing I would let mail order do is speedo, fans, rev limiter, crap like that.

 

I'm getting in late on this post, but figured I'd add my $0.02 for anybody who comes across this in the future. I used PCMforless about 3 years ago when I had my LT4 96 T/A. Car was an 355ci LT4 w/ LT's and random tech high flow cats. With the PCMforless tune, the car ran well, however I believe fuel and timing was off due to high engine temps and sulfur smell from exhaust. I shipped the PCM off to Speed, Inc. to retune it after approx. 6 months of driving, and wound up w/ a lot better tune. I'm not bashing PCMforless, in fact, I may try them again when I start modding my '99 T/A, but I was surprised no one mentioned Speed, Inc. Just another option.

 

theyre both excellent for mail orders. PCMforless sent me a mailorder tune so that I could drive around while i broke my car in before i took it to the dyno. there tune made 508 rwhp and with the dyno tune i made 519. pretty damn close for being 1000 miles away from the car

 

That is very impressive.

 

I just got my pcm back from MADZ and turnaround was real quick and emails were always answered,sometimes a little longer, but he always replied and his answers were very helpful BTW sorry you haven,t got your 94Z28 anymore, your mods and times were similiar to mine.

 

Thanks for the input guys.

 

I just got my madz28 tune over the weekend. I dont live to far from where he lives, so I just drove my car to him, He was a really nice guy and new a lot about what he was doing. I was really happy with his work. no joke, he is a true bad a$$, really cool guy. does great work, I will go to him after more mods.