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06-01-2009
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#1 |
 
Join Date: Aug 2006
Location: Texas
Posts: 518
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Throttle Body expansion
Does anyone have the latest tuner info on the 63mm bore TB vs. stock in a ZR-1 with upper end P&P, headers and AM exhaust ? Any improvement with the bigger bore ? Some used to feel it was a negative performance mod if heads are not ported as well.
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1991 ZR-1, Black, Black, # 541 |
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Threaded Mode