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+--- Thread: 603 Exhaust Straight Pipe options (/showthread.php?tid=1298)
603 Exhaust Straight Pipe options - jonbobshinigin - 04-21-2010
I will be upgrading to a Euro exhaust manifold and larger turbo soon (something like an HX35)...in that I will have to modify the downpipe (I think it is called) that goes from the turbo outlet to exhaust. So I may as well do a full upgrade while I am there. A friend will be helping me with the welding.
What I am looking for is to get some more airflow/effieciency, a more aggressive rumble at high RPMS, but nothing obnoxiously loud. I want to be able to idle and cruise at 85 without an annoying sound.
Do I need the resonator or can I delete that and just have a muffler on the rear?
RE: 603 Exhaust Straight Pipe options - ForcedInduction - 04-21-2010
Having a turndown tip makes a huge difference in noise. If you want to go 85 without annoyance though you'll need some kind of resonator.
Beware "turbo" mufflers, they are usually of a poor design. Avoid any chambered mufflers and look for something with a straight through flow like the factory.
RE: 603 Exhaust Straight Pipe options - 95e300dez - 04-21-2010
I went with full 3 inch turbo back with a big dog muffler before the rear axle and love the sound. My wife drives it and does not mind the sound. I have the list of pipe if you want it I have no clearance issues and it pretty much looks stock. The muffler is the same as magna flow but cheaper and still stainless muffler is a 24 inch with offset. I built and welded it myself ordered the pipe from Columbia river mandrel they have all type of pipe and bends and they were a gret a help with everything even pipe for my custom header.
RE: 603 Exhaust Straight Pipe options - winmutt - 04-28-2010
(04-21-2010, 04:43 PM)ForcedInduction Having a turndown tip makes a huge difference in noise. If you want to go 85 without annoyance though you'll need some kind of resonator.Interesting I thought it was just for smoke residue, I can see how another bend would certainly make a difference.
RE: 603 Exhaust Straight Pipe options - jonbobshinigin - 05-11-2010
95e300dex - A parts list of what I would need for your setup would be great!
Just for a point of reference, what size is the stock exhaust system? Is it smaller at the downpipe from the Turbo?
RE: 603 Exhaust Straight Pipe options - 95e300dez - 05-11-2010
The parts are one 2.5 v band to connect to the turbo,4 3.00" Mild Steel, 4.00" Radius, 16 Gauge, 45 Degree Mandrel Bend,7 feet of 3.00" OD, 16 Gauge, Mild Steel Straight Tube,1 3.00" Mild Steel, 4.00" Radius, 16 Gauge, 18 Degree Mandrel Bend, and one big dog muffler 24 inch body offset in and out. I will try to upload some audio of it running sound nice.
RE: 603 Exhaust Straight Pipe options - MB TECH - 05-12-2010
I went with a stock size pipe from turbo to a Moroso Noise cancellation muffler(straight through design) and a 90 degree bend and dumped in front of the left rear tire. Not too loud but will turn heads. Muffler can be found at www.summitracing.com