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Originally Posted by Eyelise
Jay would a 3" exhaust on the GT28RS improve the low end or is the restriction in the manifold? Sounds like you feel the low end is about as good as it will get. Too bad I was really hoping to get more below 4500rpm.
It will be interesting to see what the torque curve looks like with a blower making 280hp on the top end. I'm willing to give a little on the top end but I don't want 1ZZFE numbers.
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From my discussions with Jay, I think he believes the restriction is the stock CAT and exhaust set up. We will find out when 1FAST's car is dynoed because he has the 3" exhaust set up. (Oh by the way I think Jay is in Bermuda for a week's vacation)