with 173,XXX miles my gts 4age redtop wont go past 110 unless of course i come appon a hill ive heard for turbocharging good setups would be the 4agze(in english) its 160-170 Hp supercharged engine wich kinda makes it pointless to turbocharge when you got that hp allready but the engine allready has low compression pistons and all that good stuff a turbo likes another engine but not to sure would be the 20v 4age wich kinda explains itself 20 valve instead of 16 haha these engines also push pretty close to the same power.... one ofr these forums has a guy who turbo chraged his 4age 20v blacktop and it worked great for him i guess but thats getting into alot of money im just thinking of putting a 4agze or 20v in for now.
o and if you go 4age 16v like i have ive heard they can handle 4psi of boost all you people who think NOS is the answer DONT USE IT ON THE 4AG or GOOD BYE 4ag

ive heard of people blowing them up. never experienced it myself cuzz i like to keep my 4age for a bit longer
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