Intake diameter

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Old 03-03-2014, 09:34 AM
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Intake diameter

Can someone please verify the diameter of a stock 04 TL TB. I'm making my own CAI and need to know what size tubing to get. Thanks.
Old 03-03-2014, 09:38 AM
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It is just a regular v6 TL no type S or anything.
Old 03-03-2014, 10:13 AM
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the type-s and base TL have the same throttle body.
I believe its like 63mm wide.

we've found that 4 inch intakes all the way through, feeds enough air for bored throttle bodies.
Since you arent boring the throttle body, you'll be fine if you make a 4inch diameter CAI all the way through
Old 03-03-2014, 10:16 AM
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To be honest even a custom 4" won't show much gains over a regular aftermarket intake unless you have a bigger TB and IM. I used to have an aem v2 and now I have a custom 4" but I can't say I notice any power differences
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Old 03-03-2014, 10:17 AM
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like paperboy stated; boring the throttle body and porting and polishing the intake manifold and its runners are the main gainers.
the 4inch intake is just icing on the cake!
Old 03-03-2014, 10:41 AM
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Thank you both. 2.5 inches seems a bit small to me, I measured it and it seemed to be a bit larger than 2.5 in, maybe about 2.75. I'm just looking for a sanity check. Justnspace is 2.5 inches the outside diameter?

I won't be boring the TB or anything. I'm just looking for a simple quick fix for my cracked stock intake tubing and figured I would throw a tube and k&n filter on and call it a day.

Can someone please verify this diameter or post a source link, maybe from a TL manual or something? Thanks guys.
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