I have an 01 gs430 and currently I have an apex ws2 installed, but I want a little more sound out of it. Whats a better idea? to remove the two resonators or to install an x-pipe?? thanks

 

Remove the two resonators OR do a muffler delete. Start with the delete. If you like it you can have pipes installed to extend to the bumper.

The 430s have a center catalyst that I do NOT recommend replacing with an X, H or Y pipe.

 

Thank you sir, I think ill start with getting rid of the resonators. I don't want it much louder plus I like the look of the mufflers.

 

Do Both the x-pipe 1st

 

I have my resonators deleted with stock mufflers. PM me if you want to hear it..i'm in Chicago too.

 

Go with both of them!

 

My reason for saying both is because my G8 GT Pontiac (different of course) has th 6.0 V8. I actually went with the H-pipes instead of the X-pipe deleted both resonators and added the magnaflows and it wasnt very loud until i got on it. Even then it was enough to make heads turn without sounding like a exhaust job on a Harley at WOT!

 

Again, the 430 has a center catalyst. I do not recommend removing it for several reasons. Just do the twin resonators if you must keep your final mufflers.

 

Same with the 400's?

Also, where does a guy find the correct size X-pipe? 2-1/8 ID in and out, right?

 

Whats up Frankdorn! (Chis or Matt right> ) Anyway, the 3rd center muffler is just a resonator on your car. 400 had two cats that feed into a resonator where the 430 has a cat there.

 

GS400 has a single center resonator not a cat.

The single center pipe is 60mm = 2.36" OD

The twin pipes from the engine to the Y are 50mm = 1.97" OD

The way the stock Y pipes works is better than MOST Y or X or H pipes you can find.

Why do you want an X pipe? Sound?

 

I was thinking X-pipe for a little more grunt and flow, thinking maybe 5hp, I dunno. Gotta pull everything down for the TC and header install here anyway. I won't bother having it done if the differences in flow are that marginal, though.

I feel kinda stupid, but to confirm, the 400's exhaust layout is this, correct?:


(Front of car)
Header Header
Cat Cat
Y-pipe
Resonator
Y-pipe
Resonator Resonator
Muffler Muffler

 

correct

also, it is more likely that you will not gain anything or even loose by changing the front Y pipe

 

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