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so i'm looking at buying a custom made intake manifold and i'm wondering if its worth it?

my car is a 00 atx its got a CAI and will be getting the srt cat back

It'll be worth it if you can upgrade the fuel & have your car dyno tuned to take advantage of the air coming in & fuel to keep up with it all....look into a header..OBX has one...then cam & cam gear maybe a 60mm TB....then worry about intake manifold


But that's jus my $0.02

For the mods you have done so far it wont really give you much of a gain, depending on design may get a little more bottom end or top end..



Best thing you could do if you want a lil more pep is buy a RMVB, next exhaust, (header, port n polish, intake mani)together) cam...In about this order......

And by the way if you want to have your car dyno tuned you need something that is tunable since the stock PCM doesn't open source tune, meaning you'll have to get an A/F controller or a FPR. For your needs I wouldn't even bother wasting money on a 60mm TB, it's inefficient...

I will have to argue on the larger TB. With my ghetto intake it performed much better with the mustang TB than the stock TB. There was really no noticable difference between the 2gn IM and the 1gn GB IM untill I went with the larger TB. Hitting the rev limiter is very easy to do. With the stock TB you have to make an effort.
This is with an '02 Mag cam, stock 2" exhaust. No dyno to back it up, but the tires spin alot more hitting 2nd gear. With the 52mm TB, they just chirp.
So with an ATX, just an IM will really do nothing you will feel. But it will help supporting mods, as long as the inlet is 60mm/larger.