2003 GT boost pressure?
#2
RE: 2003 GT boost pressure?
I wouldn't run anything above 9-10 psi on a stock 4.6 2v. Anything above that, they tend to start having real problems, like "need a new engine" type of problems. With ported heads, blower cams, and other supporting mods you should be able to achieve around 450rwhp "safely" with a good tune, but nothing is guaranteed on the stock bottom end. Mine blew a ring land at 400rwhp on a safe tune.
#3
RE: 2003 GT boost pressure?
I think you also need to keep careful attention to boost temperature. The hotter the charge the less PSI you should be using on a stock engine. Maybe 9-10 would be OK withintercooled boost, but 6-8 if not intercooled
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jwog666
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junior04
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