Custom exhaust plan...opinions/advice desired

[MattE30]

Well, my stock muffler has a gaping hole in it now, and it sounds like droaning rice. I am going to do a custom exhaust system with dual piping from, the headers, into a single 2.5", into a magnaflow cat, and then out a muffler. I'm thinking of a dynomax turbo muffler because the price is right, but i was reading a thread, and trent said it was quite heavy. I am also looking at the borla turbo muffler as well, but it costs more than the dynomax. How can the sounds of these mufflers be described, and does anyone have any experiance with these?

[rwh11385]

Re: Custom exhaust plan...opinions/advice desired

Well, my stock muffler has a gaping hole in it now, and it sounds like droaning rice. I am going to do a custom exhaust system with dual piping from, the headers, into a single 2.5", into a magnaflow cat, and then out a muffler. I'm thinking of a dynomax turbo muffler because the price is right, but i was reading a thread, and trent said it was quite heavy. I am also looking at the borla turbo muffler as well, but it costs more than the dynomax. How can the sounds of these mufflers be described, and does anyone have any experiance with these?

I'd PM Ted aka SlammedE30.

I'll repost one of Ted's threads: http://www.r3vlimited.com/phpBB2/viewtopic.php?t=111 which talks about his exhaust, but I know you already have read it once. You asked about his exhaust, but this is just for reminders.

Matt, the car has stock exhaust manifolds and downpipes, but its got 3" piping from then on, and I have a Borla XR-1 race muffler as a catalyst replacement and a Borla Turbo muffler as the exit muffler. It sounds mean All due to the help of Apex Engineering, who gave me solid advice on which exhaust to go with and got the parts to me promptly! Thanks Apex!!
-Ted

I'd say talk more with Ted again, or get the # for Apex.

I believe Stu is a Dynamax fan......from his motor info:

-custom down pipe, custom center section to a 2-1, 2.5" Straight-pipe with resonator and Dynomax muffler (no cat)

Those are two similar set-ups to what you're looking at.

[onenicebimmer]

I have the Dynomax Super-Turbo and a Magnaflow cat on my Jeep Grand Cherokee I-6. It's a 4 liter, inside the Jeep the exhaust sounds like a little louder stock one. But, on the outside it sounds like very quiet straight pipes (louder than stock, though). That's the best that I can describe it. I'm guessing that it would sound about the same on the BMW since both engines are inline-6.

[EtaSport]

Get Borla. Their stainless mufflers will supposedly last longer than your car? is that what they claim? Anyway I put resonator delete pipe on my eta along with a thrush turbo muffler. Wow, the thing sounds almost stock. That thing is coming off and borla is going on. I've heard claims that if you were comparing mufflers, dynomax would be quietest, flowmaster is louder, but borla is loudest. But it also has a nice mellow tone like the flowmaster, not rhapsy.

[Bryson]

we have a custom borla on the minivan, it's raspy as fuck

[SlammedE30]

One word: Burly. 8)
-Ted

[rscheiring]

I put in a Dynomax Super Turbo muffler in my 325iC, but its still up on the stands while I do everything else to it! It wasn't expensive, but it was a lot of work making it fit (unless you can weld that is). Also hard to get the outlets to line up nicely. I thought it was super light, but that was comparing it to the stock one I took off. It was a fair bit smaller too, so had to bluff my way into a second hanging spot. Looking back I would have got the catback from Ireland engineering. Good price, straight through and light

[onenicebimmer]

rscheiring,
How does the Super-turbo sound on a bimmer?
Also, I know that Dynomax crimps (sp?) their mufflers at the seems instead of welding them, while Flow-Master and Magnaflow welds them, which makes them more durable, and raises the price.

[rscheiring]

The super turbo is welded, so no worries there. However it is "aluminized", not stainless throughout. You get what you pay for I guess.

As for sound, I don't know yet as I haven't tried it out. I'm doing all mods at once, so when it hits the ground it will be a new car. There are sound bytes on the dynomax site if that helps at all. Bavauto also has some sound bytes (in their project car section) too. Again, I would take a hard look at Ireland Engineering's unit.