Turbo guys...which axleback?

[JeremyH]

I know...understand turbo is not the same as a s/c but he said he wanted to avoid drone...I hoped the s/c would get rid of the drone for me and it did not...I can't see it mattering whether he had a turbo or a s/c with regard to drone.

Turbo bottles up the exhuast completey changin the exhuast tone from a dual exhuast midpipe car.

Completely different, as all of the exhaust goes through the turbo housing (instead of straight out through the exhaust pipes) and the car has a Y-pipe instead of an H or X pipe. Supercharger has no way to quiet exhaust down, actually its louder when you're under boost due to more cylinder pressure.

Yup yup.

I still don't see how that would affect drone since they are still going out the mufflers...

Drone has to do with acoustics based on exhuast flow/engine rpm.

With single exhuast y pipe its a hole different setups so any kinda of muffler setup is going to act and sound different.

You rememeber how my car sounded with kooks longtubes and o/r x-pipe, then the jba shorties and catted h. Now with the single turbo outlet and y pipe its a whole new sound range and alot quieter! Thats why turbo guys can get away with blowthru muffs, thay would normaly be too loud and droney on a normal exhuast.

 

[v8venomgt]

im running a 3 in dynomax catback system. it doesnt really drone to bad. it sounds ok, not fantastic (which would be max mufflers and a prochamber ie lots of drone) im satisfied for now with it. if you want 0 drone, go with the corsa exhaust. i have the middle version, street maybe? it had a lot slp sound characteristics, so i got rid of it pretty quick becuase i hate the sound of slp exhaust. it however was pretty quiet overall, and had no drone whatsoever

 

[JeremyH]

im running a 3 in dynomax catback system. it doesnt really drone to bad. it sounds ok, not fantastic (which would be max mufflers and a prochamber ie lots of drone) im satisfied for now with it. if you want 0 drone, go with the corsa exhaust. i have the middle version, street maybe? it had a lot slp sound characteristics, so i got rid of it pretty quick becuase i hate the sound of slp exhaust. it however was pretty quiet overall, and had no drone whatsoever

Thats the kit i was going to buy, the dynomax 3" as its cheaper than magnaflow, but i got a badass deal on the 3" magnaflow magnapack kit so I just bought it.

 

[GB10]

My setup is different from others and may not work for you, but I have a single 3.5" exhaust with two Dynomax bullets inline and it is real quiet. When I go wot the turbo is much louder than the exhaust which I like.

Here's a vid; my car is the Grabber blue '10 at the 3:14 mark

http://vimeo.com/16197899

 

[s8v4o]

The power gains aren't the big point here, we are talking less back pressue/efficiency. The turbo will breath/run better is the main advantage. A little power gain is just a side effect. One eye willy did some back pressure measurements on this matter.

What is the big point here then, power, drone , efficiency? If you're talking about less back pressure and efficiency how is that going to affect drone that the OP is worried about? The increase in power from the axle back swap is directly related to restriction and less back pressure in the exhaust. So as there was not a BIG gain in power there shouldn't be a BIG increase in efficiency either from just switching axle backs. The difference for the turbo will be very minimal. I'm pretty sure that's what he's talking about anyway.

By the way, aren't ALL muffler "blow thru"? LOL Just giving you a hard time bro. I'm sure you meant straight thru. A straight thru muffler isn't actually as important on our cars than other vehicles where the muffler is located. Because our mufflers are so far back compared to other cars the swirling of the gasses starts to straighten out before it enters the muffler. As the swirl reduces as does the need for a straight thru muffler. If I replace my mufflers I will go straight thru but for now I'll just run the factory ones.

 

[JeremyH]

What is the big point here then, power, drone , efficiency? If you're talking about less back pressure and efficiency how is that going to affect drone that the OP is worried about? The increase in power from the axle back swap is directly related to restriction and less back pressure in the exhaust. So as there was not a BIG gain in power there shouldn't be a BIG increase in efficiency either from just switching axle backs. The difference for the turbo will be very minimal. I'm pretty sure that's what he's talking about anyway.

By the way, aren't ALL muffler "blow thru"? LOL Just giving you a hard time bro. I'm sure you meant straight thru. A straight thru muffler isn't actually as important on our cars than other vehicles where the muffler is located. Because our mufflers are so far back compared to other cars the swirling of the gasses starts to straighten out before it enters the muffler. As the swirl reduces as does the need for a straight thru muffler. If I replace my mufflers I will go straight thru but for now I'll just run the factory ones.

I didnt do it to gain any power or sound is my point. Too much backpressure will kill a turbo and is more wear and tear. Meaning less efficient and also hurts spool time.

No, i mean blow-thru style mufflers meaning no chambers or redirection/slowing of the exhuast flow.

The op isnt as much worried about drone that was his last remark, he is worried the stock chambered muffles are a restriction at his power level with a turbo whick they are. Besides its going to be hard to drone on a single turbo ypipe setup anyway. Shit you cant even hear my exhuast jsut the wastegate. lol

The main concern is what works best with a turbo. which in case would be some straight pipes, but i warn you they do sound horrible, so a blow/thru straight thru style muffler is the best bet, also making the overall diamter of the exhuast larger from the downpipe back works better too.