Rear Cat Delete and X-Pipe Question

[ballinb5]

Can anyone confirm my main reason for posting so that others with the same questions might be able reference this thread?

Is the x-pipe required? Or can the resonator be deleted in such a way that the exhaust becomes a "true dual" exhaust all the way through (from headers to muffler)

Edit: Looked at the AWE website and it looks like the exhaust already has an X-Pipe:
http://www.awe-tuning.com/awe-tuning...wnpipe-systems

Will prob decide what to do when the car is raised and what the shop can do.

[jl87]

As mentioned above, the downpipes have resonators in them, not catalytic converters.

The main reason for an x-pipe is to promote exhaust scavenging- basically creating a more complete combustion cycle from the engine. An x-pipe also changes exhaust tone.

If you look at the OEM exhaust, unless there's an x-pipe in the center resonator, it is a "true dual" as you call it and does not utilize an x-pipe.

If you already have a resonated AWE exhaust on the car, here are a few options:
1. Remove resonated downpipes and install OEM downpipes or OEM downpipes without resonators if you want to hack something apart.
2. Purchase non-resonated downpipes/try to trade in classifieds.
3. Leave exhaust as is but remove the rear cans (they attach with clamps and are easy to remove) and have the shop create the last section of exhaust with a simple Y for the tips.
4. Sell resonated system and purchase track edition or post a classifieds ad and see if someone would like to trade that thinks their track edition is too loud.

Hope this helped.

[chaos2984]

As mentioned above, the downpipes have resonators in them, not catalytic converters.

The main reason for an x-pipe is to promote exhaust scavenging- basically creating a more complete combustion cycle from the engine. An x-pipe also changes exhaust tone.

If you look at the OEM exhaust, unless there's an x-pipe in the center resonator, it is a "true dual" as you call it and does not utilize an x-pipe.

If you already have a resonated AWE exhaust on the car, here are a few options:
1. Remove resonated downpipes and install OEM downpipes or OEM downpipes without resonators if you want to hack something apart.
2. Purchase non-resonated downpipes/try to trade in classifieds.
3. Leave exhaust as is but remove the rear cans (they attach with clamps and are easy to remove) and have the shop create the last section of exhaust with a simple Y for the tips.
4. Sell resonated system and purchase track edition or post a classifieds ad and see if someone would like to trade that thinks their track edition is too loud.

Hope this helped.

good info. I would not want hack up a nice exhaust like that unless like you said remove the mufflers on it and add instead straight pipe with twin tips. But If you want a truly loud exhaust. I would cut off front resonators on the factory down pipes and put in an Xpipe and then just run straight pipe back and thats it with some tips on it and your done.

Most people on here who do not want to spend the money on a true exhaust because its way overpriced, do the X pipe mod. Their are 2 ways to do the mod. First one is to cut out that center resonator, know as suitcase to some and put in an X pipe there. Ive only head video clips of that exhaust. But some others have cut off the front resonators on the down pipes and put in an X pipe there, then leave the center resonator and cut off the mufflers and add in pipe with just twin tips. I have heard that exhaust in person and it sounds great. Its not to loud for normal driving but as soon as you hit it, it gets loud. Ive heard it and it sounds good. I was going to do that mod but i came to be able to acquire a Full AWE exhaust with down pipes for an absolute steal with trade for a factory system.

But i guess its whatever you want to do. I just wouldn't cut up a nice aftermarket exhaust due to cost of it and or resale value. You could make one for much less

[ballinb5]

As mentioned above, the downpipes have resonators in them, not catalytic converters.

The main reason for an x-pipe is to promote exhaust scavenging- basically creating a more complete combustion cycle from the engine. An x-pipe also changes exhaust tone.

If you look at the OEM exhaust, unless there's an x-pipe in the center resonator, it is a "true dual" as you call it and does not utilize an x-pipe.

If you already have a resonated AWE exhaust on the car, here are a few options:
1. Remove resonated downpipes and install OEM downpipes or OEM downpipes without resonators if you want to hack something apart.
2. Purchase non-resonated downpipes/try to trade in classifieds.
3. Leave exhaust as is but remove the rear cans (they attach with clamps and are easy to remove) and have the shop create the last section of exhaust with a simple Y for the tips.
4. Sell resonated system and purchase track edition or post a classifieds ad and see if someone would like to trade that thinks their track edition is too loud.

Hope this helped.

Yes, thank you. That's exactly what i was looking for. I will most likely have the shop weld a straight pipe instead of the resonators on downpipe and remove the rear mufflers. Since they are clamped in i wont have to hack up the exhaust.

[drob23]

Can anyone confirm my main reason for posting so that others with the same questions might be able reference this thread?

Is the x-pipe required? Or can the resonator be deleted in such a way that the exhaust becomes a "true dual" exhaust all the way through (from headers to muffler)

Edit: Looked at the AWE website and it looks like the exhaust already has an X-Pipe:
http://www.awe-tuning.com/awe-tuning...wnpipe-systems

Will prob decide what to do when the car is raised and what the shop can do.

With a v6 you need to have scavenging between the two exhaust manifolds. With 3 cylinders per side, in a given exhaust manifold, you'll always have 180 deg (out of 720) of crank phase with no cylinder firing. So you'll hurt performance (via pumping loss) if you completely decouple the exhaust paths.

[ballinb5]

With a v6 you need to have scavenging between the two exhaust manifolds. With 3 cylinders per side, in a given exhaust manifold, you'll always have 180 deg (out of 720) of crank phase with no cylinder firing. So you'll hurt performance (via pumping loss) if you completely decouple the exhaust paths.

Ok thanks.

I ended up only removing the stock downpipe resonators and it sounds amazing. There is an x-pipe on the awe catback so i think for now i will leave the awe as is.

Will post video later