Shoot me a PM there is a guy that can tune that for you in the San Fernando Valley. He can handle the injectors and all, and I think you will get the max out of it with a dyno tune over a mailorder tune.

 

What difference do the NGK TR-6 make of AC plugs. If anybody cares a stock 6.0 with cast pistions can not handle 12 lbs. of boost. I just put a set of diamond forged pistons in it so hopefully it can handle 15lbs with an intercooler and methonal. I have been plagued with tuning problems. I have had nelson do 4 tunes for me and still no luck. Does any body know if SCT has released programming capabilties for chevy yet

 

With that kind of boost you need to have it tuned on the dyno or street. It will never last with a mail order tune.

 

yea man he is right no mail order pcm can handle that get a goot chassie dyno for that thing

 

Back to the question of where to get plugs, I got my TR6's from Advanced Auto, in stock and like 1.00 a piece ( Actually it was 1.08 each )