Hey guys my 94 z is havin some issues. Its has a new motor cc306 cam longtubes 30lb injectors cai dumped exhaust th350 3500 stall pcmforless tune. The car doesnt act so strong. It idles up n down. when its cold its hard to start n wont take gas. When in park it revs up. Any thoughts? Just changed plugs n o2s

 

Send the tune to someone that knows what to look for and make sure its on the money. PCMFL tunes have been known to, at best, leave a lot on the table. At worst, totally screw up your car.

 

The 306 is such a common cam that any vendor, including PCMFL should have a tune that's pretty damn close. Did you check for vacuum leaks? Any codes? Gas smell? Smoke? Plug wires crossed? MAF dirty? Does it do it in both open and closed loop? Have you tried data logging? What plugs at what gap and O2s? How old are the plug wires? Did you hook up all of your grounds?

A 306 isn't exactly a stock bottom end daily driver cam, what are you comparing it to? Is it just not fast, anywhere in the RPM range, even at 6000-6500 where that cam needs to be to make power with stock cubes and bottom end? What's your compression ratio?

 

Its a rebuilt stock bottom end. Its got new ngktr55 plugs the wires r on right. Got a little gas smell. No vacuum leaks. New o2s. I found a pcm ground off n got a map code. But it acts like its out of time