Jared B

Is the silicone coupling 3.5 or 3.25 for the tb.

SS/SCking

3.5.

Rodimus_Prime

iTrader: (3)

to work with most intakes you will need a 3.5 to 3 reducer

coopn8r

Unless you have a stock intake and then youll need a 3.5 to 2.5 which can be found on E-bay.. At least thats what it is for Redlines :P

Jared B

thanks for the help

Rodimus_Prime

iTrader: (3)

using the LS4 with anything but a 3 inch intake is a waste

coopn8r

Not really.. I'll see better gains on my Stock intake on an ls4 than i will with an Aftermarket intake IMO.. The Intake for the Redlines outflow any performance intake on the market and those are few and far between. our intake compared to yours, yours does bends while ours just goes straight down.