I measured that, it will fit fine under there. The muffler area under the E30 is quite large. The fitment issue I was worried about is that the inlet on the current Flowmaster is in the center, and so is the inlet of the 13" Dynomax. The inlet of the 22" Dynomax is offset to one side.
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When you do go poly mounts. Get the revshift Bue 24v swap mounts and blue tranny mounts. They're awesome.
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More material is more muffler-ing. Get the 22"
Status: HG repair. 488wtq though!Comment
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I have never used a 22" dynomax so i don't know but i would guess that your car will sound stock with one that big. I have a '62 International Scout with a 152ci 4 cyl and have a 13" Dynomax and a side exit. The whole system is 7-8 feet long. It is throaty sounding but not at all loud. My 911 has a 14" magnaflow only and it is loud, louder than i want a daily to be (as a reference). FWIW, Bursch uses the 13" Dynomax on their 911 systems and they sound awesome even as the only muffler. Then again, the Dynomax is not solely dependent on muffler volume like a straight thru muffler is,so its possible the bigger one would not be way quieter than the small one. It would probably be easier to change to the smaller one later as opposed to the opposite.
Your exhaust shop should be able to advise you.
.Last edited by LJ851; 07-15-2011, 06:35 AM.Lorin
Originally posted by slammin.e28Comment
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The new Dynomax got here yesterday, and just from looking inside it, I think it's going to make a huge difference in the sound. I'm so anal about this, I actually contacted Dynomax directly and told them exactly what my system was like, what it was comprised of, and what it sounded like. I ended up getting the single 3" in/dual 2.5" out, with the 13" can length.
The guy I talked to at Dynomax said that even with the large pipes and the Magnaflow in the middle, the larger 22" probably would have made my car sound almost stock, which I don't want. I don't mind somewhat loud, and a good, deep tone, I just don't want it as loud as it is with the Flowmaster. Both him and the guy at the exhaust shop said the Flowmaster is actually making the system louder and raspier than it would be with another muffler.
So it goes back in to the exhaust shop Monday, and should emerge with a MUCH better sounding exhaust note. Something funny that I noticed, when I knock on the Flowmaster with my knuckles, I get a very distinct almost "bell-tone" ring. Same thing on the Dynomax, I just get a good, thick-metal THUD.Comment
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Josh,
Thanks for posting the update. I have been watching this with great interest, as I will be dropping an M50 in my car veddy, veddy soon. Please post back with your results and final overall setup (I figure you probably would have anyway, but I wanted to make sure you knew that there are people anxiously awaiting updates)!
Cheers!‘Tis by the grace of God that my cars run!Originally posted by LJ851
Siobhan's Build Thread - UPDATED!Originally posted by unloadedak
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Alright, just got the car back, and the Dynomax definitely sounds much better. The system overall is still fairly loud, but the sound as a whole is much better. All of the drone is gone, and almost all of the rasp is gone. Idle and cruising are both fairly quiet, much more so than with the Flowmaster. There is still a decent rasp at WOT, which I'm actually ok with, and there is much, much less of it now. Even at hard acceleration into 2nd and 3rd, it's only there for a second or so at about 3k, then it goes away.
I have also heard that after a while of driving, sounds of new mufflers and exhaust systems will change slightly. So my next step I think after this might be to have an X-pipe made to go between the ebay headers and the first small Magnaflow, because right now, it's just dual 2.25" pipes going from the headers into the Magnaflow. I'm pretty sure this will take away the rasp, and should also help to quiet things down even a bit more, yes?
Best part of it? The guy at the shop didn't charge me for swapping out the mufflers, because he recommended the Dynomax, and he didn't think it helped. I just talked to him and said that I think it sounds much better, but he still wouldn't let me pay him.Comment
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Nice, at least some people are still cool out there, huh?
I really think these motors sound good with a bit of rasp and yes, once you get some buildup on the insides the sound will change a bit. It took me forever to find an exhaust for my old prelude that didn't sound like a tin can (Greddy). The one i finally settled on still had some pinging but went away after a while.Comment
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xpipe won't do much for you. at least a noticeable amount anywho. Just drive it. be happy.
Status: HG repair. 488wtq though!Comment
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My e30s50 was pretty raspy, and I tried a few things to unsuccessfully get rid of it - last one being ebay headers, 2 -> 1 generic crappy cat, tiny 9" Magnaflow, and then some cheap OBX can or something (only thing I could find with tips).
e46 M3 guys swear by welding an extra AR20 (google it) into the one pipe that doesn't already have a resonator - pretty much kills the rasp that these things come with. Not sure if they'll do the trick, but they're cheap and a pair of them be worth a shot.
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I've got obd2 manifolds -> custom midpipe with a 12" resonator in each pipe -> ebay stainless m20 catback
absolutely zero rasp. it is fairly quiet, though, only a bit louder than stock. I dig it.
S50'd
Originally posted by TDE30Originally posted by slammin.e28Comment
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I was actually thinking about using the stock resonators from the OBDI E36 M3 pipes I got from Curt, the small ones that are right after the cats. Think these would be worth having installed, before that first small Magnaflow that I have in place of the cats?
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