I just replaced all my gaskets. Put in NGK Tr55r and MSD 8.5mm wires. My opti is fairly new (15,000m) and I run an MSD 6BTM. I upped the boost to a 14lb pulley and run it through a three core intercooler. I have a stock fuel pump with a T-Rex in-line and a FMU.

Now to the problem. At high rmp and WOT around 4200+ she chokes out. Is this because of a lack of fuel? I ordered a Aeromotive a1000 and a fuel pump controller and will install it soon. Should I keep the FMU or just to to a pressure reg? I set the gap on the plugs at .32 because of what i have read at various sites. Where should I go from here. Do you thinks it's from a lack of fuel? I have 65lb injectors. and I noticed a significant drop in fuel pressure compared to what it ran before the boost upgrade (from 8lbs) I'm stumped and may have to give her up if I can't find a solution soon. My wife is really tired of the time and money I put into the beast. Any help would be great and let me know if there is any information I left out that would help solving this problem.

Chris

 

Well only 1 way to find out... put a pressure gauge on it. Forced Induction is definately not something you should be guessing at, otherwise it gets very expensive! With the stock pump and the T-rex on 14 psi of intercooled boost, I'd say your probably running out of fuel. Also your plugs could go colder than the TR55's. The TR6's are only 1 range colder than stock.