The following two setups will be 3" throughout utilizing a high flow cat (possibly by Ultimate Racing) and Magnaflow brand Turbo XL muffler(s). Let me know what you think of both setups. I would aim for the more quiet exhaust as 3" will be loud as hell already. This would most likely be used with a turbo kit. Thanks.

 

"most likely" be used with a turbo kit???? 3" is useless unless you go with a turbo kit.

 

Would you care to explain how the 3in would be useless unless with a turbo kit?

 

Turbochargers work off of exhaust gasses to spin the turbine blade, N/A engines do not simply b/c they have no turbo (duh), backpressure for turbochargers is bad, bigger diameter the pipe, the less backpressure you have. 3" is overkill for a N/A engine so small as 2.0 or 2.2L. I don't have the technical jargon and physics for it, but its just not good for an n/a car to have full 3" exhaust as opposed to a f/i car that actually needs the bigger flow.

 

This is a F/I forum. And a turbo is not the only form of F/I. Any other useful info you would like to provide?

 

Not for someone in the infant stages of FI such as you. I would only suggest using the search function as I am sure all of your "questions" have been discussed several times.

 

No they have not. Thank you for nothing. Please leave my thread.

 

i'd go with the two muffler setup rather than the 2 resonator setup. it might be hard to find a muffler with one in and 2 out... i'm not really sure as i've never searched for one. also, personally, i go with just a single resonator after the cat, before the y split. either way, with a turbo setup 3" will be fine and the turbo will keep things quiet.

as a rule of thumb, a 2.5" exhaust will be acceptable in applications making up to 250hp n/a or boosted... 3" is good for up to around 700hp and anything above that and you want to go to 4".

as for the turbo exhaust vs. n/a exhaust debate... turbos hate back pressure. back pressure comes from the exhaust system as well as the exhaust manifold, but the pressure behind the turbo is what will prevent the turbo from reaching its full potential. basically, you want no back pressure to prevent flow out of the turbo. if you have a restrictive exhaust that creates back pressure and put it behind a turbo the turbo will not be able to spool freely and will lose a great degree of its efficiency to pump out exhaust gases. with n/a setups, you do want a certain degree of back pressure, but in most cases this can be attained through a properly setup header with a venturi incorporated into the design of the collector. typically you still want a free flowing exhaust.

 

anyone else?

 

I prefer two full size mufflers at the rear and a single muffler at the front.

Tim