If the header has a 3" collector do you have to have a 3" exhaust for it to meet up and bolt together cause i have the corsa sport exhaust and i just wanted to know if i had to get a header witha 2.5" collector of i could get one with 3". Thanks for the help.

 

Yes, unless you can get an adapter to go down to 2.5". That is not recommended though. CTI said they would make a 2.5" down pipe per request if I remember correctly if that is what you are looking at.

 

You can use an exhaust transition pipe like this....

http://burnsstainless.com/Transitions/transitions.html

 

what he said,

CTI makes the 3 inch ones, but i requested a 2.5 instead. and he added one of these

and all matches up well

 

Remember, the transition for optimal purposes, should be about 8-12" long.

 

mine is for, monitarial purposes, not optimal... I don't have the cash for a 3 inch catback.

 

You gotta pay to play........