09-05-2005, 05:08 AM
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3" Exhaust
Join Date: Nov 2004
Posts: 81
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as a side note, are you going to an after market ecu? if you are, then stay with the 440's. they flow enough to support in the area of 450hp. reason people go to the 550's is the flow more fuel for the same signal pulse, and it balances out the lexus afm, and raises the boost cut by fooling the ecu. if your running aftermarket, theres no need. upgrade the fuel pump, and just make sure the rest is in fine order, and should be fine.
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