Thread: Mods for my 98 GTP

Originally Posted by ngj123

No everything included.

But still, think about it. You can get a ZZP downpipe for 150 if you send your old cat in and get $50 back. Install yourself, that saves you $700 to do other stuff to your car! A quality tune, CAI, spark plugs, anything! If your set on headers, go for it

I just don't understand what a downpipe has to do with anything except for it being a little less restrictive. I mean headers should be way better than just throwing on a downpipe.

Originally Posted by 2FASTGTP

But still, think about it. You can get a ZZP downpipe for 150 if you send your old cat in and get $50 back. Install yourself, that saves you $700 to do other stuff to your car! A quality tune, CAI, spark plugs, anything! If your set on headers, go for it

Originally Posted by ngj123

I just don't understand what a downpipe has to do with anything except for it being a little less restrictive. I mean headers should be way better than just throwing on a downpipe.

Headers: probably 3.4" pulley

Downpipe: probably 3.5" pulley

All depends on your situation but it boils down to, is the extra gain from headers worth an additional $700?

I already have a quality tune from Intense, a cold air intake that I made and colder iridium spark plugs.

Originally Posted by 2FASTGTP

But still, think about it. You can get a ZZP downpipe for 150 if you send your old cat in and get $50 back. Install yourself, that saves you $700 to do other stuff to your car! A quality tune, CAI, spark plugs, anything! If your set on headers, go for it

Yes it was, so what can I do to correctly tune this since it is obvious I have no clue what I am doing?

Originally Posted by REDCOMPG

Guessing this is a mail order tune? Hate to break it to you but a mail order tune can only do so much. A in car tune can adjust the tune to your car not just some generic **** that some guy put together because it worked on another car.