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.

 

It is just a regular v6 TL no type S or anything.

 

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

 

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

 

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!

 

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.