hey everyone which s-pipe/downpipe is better invidia or megan? what is the hp and tq difference? if anyone has any info let me know thanks....

 

nether do anything. Unless your boosted.

 

so since i have a alphawerks header and have upgraded the exhaust piping from the cat back from 2" to 2.5"......nuthing will happen by adding either one of those spipes/downpipes?

 

Well 1st off, you won't have either if you are boosted because neither is made to connect to a turbo manifold.

IMHO...Invidia, mainly because I have it.

Well I hope you added a resonator to get rid of that horrible, horrible rasp.

Adding either Invidia or Megan will help with air flow, now whether it will matter in what goes to the wheels is debatable but getting rid of the stock one is a plus. If you are trying to keep it N/A add some NST pulleys with your setup as well. I don't know if you're going for performance or just a nice sound. Invidia will help with that sound as long as you have a resonator welded onto the exhaust. If you ever choose to run a nitrous setup the headers, downpipe and exhaust will definitely help it out.

But if you are expecting miracles by adding a downpipe you are going to be disappointed.

 

im running a glasspack right before my hks exhaust....im going N/A and gunna go pulleys and flywheel eventually. I just need to figure out which spipe to go with thats reasonably priced and gunna be a top competitor with the rest of the s-pipes for helping with air-flow

 

Invidia FTMFW

 

is there any airflow difference or just sound?

 

Both spipes are gonna function the same really.......shaped the same,same size,think the air bung is even in the same place,mainly you get a manufacturer or two to choose from.

both pipes are better than the small stock one though.

 

my vote is for invidia.

 

Neither, just better than stock.

 

I said nether because I dynoed my car after every bolt on- cai, header, muffler, s pipe, and then the mid pipe. Didn't gain anything with the s pipe or exhaust, just noise.