Whats up all. I have a few questions for all your experience FI people. I have a T3/T04E and am planning a custom turbo kit for my ride. So far i have a MSD 6AL w/Blaster SS Coil, B&M Fuel Press Reg, and jackson racing fuel pump. I am planning on a Vortech FMU, AEM Fuel Rail, HKS BOV, Spearco Intercool, all custom 18g 2.5 in turbo piping, and 3in downpipe and exhaust, Eagle Rods, Greddy head gasket, APEXI VAFC and AVCR, and STR block guard. Now that all that is out of the way. My questions will begin. I am just curios as to what psi of boost would be safe? I was anticipating around 10-15. but any other input would be greatly appreciated. Also, Is there any call at all to replace my factory pistons? i have just heard from a few people that my factories will hold up fine under boost, that i just need to get stronger rods. Any suggs are appreciated.



[Modified by Dustorm, 4:31 AM 3/29/2002]

 

After going with new rods and pistons, your weak point will be your sleeves which without the aid of a BG won't like much over 12psi.

If you're going the FMU route, ditch that JR fuel pump and get an inline, especially if you plan on seeing over 10psi (can you say 200psi at the rail!) You'd better strongly consider upgrading to some DSM 450cc injectors, or RC 310's at the very least

 

You're going to want to drop compression down a bit.. get a set of forged pistons. They'll run cooler to boot.

10-15psi isn't reliable on a mechanical FMU. Get a standalone, then you're talking. I'm doing the same setup as you and I've only hit 9psi once on an FMU--never again! Never exceeded 7psi on stock internals.

Thing is, if you're planning to get the Eagle H-beams, you might as well put in the lower compression pistons while everything's apart. It's also a lot easier to put in full-flating piston pins than it is to press out the stock pins out of the piston to reuse.