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1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 03-31-2011, 04:26 PM   #1
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what would the difference be if i went to a 3 inch fwi from a 4 inch fwi i have a 4 in metal dryer vent tube from tb to fender well and it looks well..... unprofessional .i found a 4 in to 3 in rubber reducer for my tb end and i was going to make it 3 in all the way to fenderwell with smoothe pipe less turbulance but will it affect my performance going to a smaller diameter pipe.
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Old 03-31-2011, 07:57 PM   #2
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spectre has a 3.75 build your own intake kit that u can get a autozone it works pretty well i have oone on mine
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Old 03-31-2011, 10:59 PM   #3
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You can also go to Intense racing or ZZ performance and order a flex tube in what ever size you need.
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Old 04-02-2011, 03:14 PM   #4
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what are the pros and cons of 3 inch vs 4 inch or
is one inch difference not really that big of a deal
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Old 04-02-2011, 03:20 PM   #5
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Bigger is better on intake. Will it make any real difference, not very much.
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