Custom Exhaust project, opinions welcome

robc1976 · 06-24-2013, 11:12 PM

Quote:

Originally Posted by longliven54

a local member has resonated dps, 2 resonators in place of secondaries + muffler delete.
it sounds very nice. very minimal drone or rasp.

i personally have electric cutouts. i have e-bay exhaust piping(painted black to prevent any possible rust) with stock muffler with cutouts rite before my resonators. quiet but beefy sounding for cruising around. cutouts for when i m out having fun and dont care about drone or rasp.
been running this setup for about 3years now.

Very good info!!

triggz · 06-24-2013, 11:17 PM

If you're changing everything I would do 3" piping all the way from the downpipes. Any exhaust shop can get you aluminum piping. As long as you have stainless downpipes, heat shouldn't be an issue at all. Even if your resonators are smaller, they can easily expand the inlet/outlet to fit the 3" piping. Make sure to get a flex section added on after the downpipes. Do it right the first time

robc1976 · 06-24-2013, 11:20 PM

Quote:

Originally Posted by ken1137

PM Cyba...maybe they can fabricate some if their new 4.0s are not 4". Subscribed for final exhaust sound

They are weld on and I want to stay away from weld on if I can.

robc1976 · 06-24-2013, 11:21 PM

Quote:

Originally Posted by triggz

If you're changing everything I would do 3" piping all the way from the downpipes. Any exhaust shop can get you aluminum piping. As long as you have stainless downpipes, heat shouldn't be an issue at all. Even if your resonators are smaller, they can easily expand the inlet/outlet to fit the 3" piping. Make sure to get a flex section added on after the downpipes. Do it right the first time

I don't know that 3 inch would clear my lock down kit. plus it would hang very low and I am already very low lol!

triggz · 06-24-2013, 11:25 PM

Quote:

Originally Posted by robc1976

I don't know that 3 inch would clear my lock down kit. plus it would hang very low and I am already very low lol!

Good point. Well then go to your shop first and have them measure for you since they are doing everything custom. I don't think there would be noticeable difference in 2.5 over 3. Ideally you want to go bigger tho

triggz · 06-24-2013, 11:30 PM

When I wanted to do a custom piece, I wanted to do the hpf system before they even made theirs. Catless downpipes > ypipe > 3.5" > super quiet resonator > 3.5" > yPipe > bottle resonators > tips

robc1976 · 06-24-2013, 11:33 PM

Quote:

Originally Posted by triggz

When I wanted to do a custom piece, I wanted to do the hpf system before they even made theirs. Catless downpipes > ypipe > 3.5" > super quiet resonator > 3.5" > yPipe > bottle resonators > tips

I have thought of that to....I just don't trust a shop doing all the bends ECT...usually the bends suck with a shop doing them lol!

speedimage69 · 06-25-2013, 12:25 AM

Quote:

Originally Posted by robc1976

I have thought of that to....I just don't trust a shop doing all the bends ECT...usually the bends suck with a shop doing them lol!

Have you considered Eisenmann Racing? it sounds fabulous....

TTurbo335 · 06-25-2013, 12:54 AM

Rob soo the rasp started after you took out the second cats? I've been kickin this around for sometime now, but don't wanna start messing with the whole exhaust system. My question to you. Take the second kitties out or Keep em?
AR Downpipes
Secondary BMW Cats
SuperSprint X pipe
Dinan Free Flow Muffler.
Sorry Don't know where to purchase slip on burnt titanium tips. I'll keep an eye out.

robc1976 · 06-25-2013, 12:57 AM

Quote:

Originally Posted by Marz11

Rob soo the rasp started after you took out the second cats? I've been kickin this around for sometime now, but don't wanna start messing with the whole exhaust system. My question to you. Take the second kitties out or Keep em?
AR Downpipes
Secondary BMW Cats
SuperSprint X pipe
Dinan Free Flow Muffler.
Sorry Don't know where to purchase slip on burnt titanium tips. I'll keep an eye out.

I had a bit of rasp with secondaries in...when I took them out it got worse...but love the faster spool up!

robc1976 · 06-25-2013, 12:58 AM

Quote:

Originally Posted by speedimage69

Have you considered Eisenmann Racing? it sounds fabulous....

I have, but want my entire exhaust new lol!

TTurbo335 · 06-25-2013, 01:05 AM

Quote:

Originally Posted by robc1976

I had a bit of rasp with secondaries in...when I took them out it got worse...but love the faster spool up!

Thanks! I think I want the faster spool up!

robc1976 · 06-25-2013, 01:52 AM

Quote:

Originally Posted by Marz11

Thanks! I think I want the faster spool up!

With my RB'S it was surprisingly noticeable....I was a bit surprised lol!

boostaholic786 · 06-25-2013, 02:52 AM

Haha I try to help everybody out when I can lol. So im glad I saved you $2800 bucks lol. The resonators regardless if they are the regular ones, quiet ones, or ultra quiet, none of them are going to take away power since its just the packing inside the resonator to quiet the rasp or drown out, so no power loss whatsoever. It makes a minor difference but it might be just what your looking for. but honestly move the resonators where the secondaries go and I think alot of your rasp issues your having.

Glad I could help

Quote:

Originally Posted by robc1976

I saw your post a while back and you literally save me $2800 lol! So do the regular vibrant resonators still perform close to the "quite" ones? Do they obstruct flow at all our is us just more packing.

robc1976 · 06-25-2013, 12:38 PM

Quote:

Originally Posted by boostaholic786

Haha I try to help everybody out when I can lol. So im glad I saved you $2800 bucks lol. The resonators regardless if they are the regular ones, quiet ones, or ultra quiet, none of them are going to take away power since its just the packing inside the resonator to quiet the rasp or drown out, so no power loss whatsoever. It makes a minor difference but it might be just what your looking for. but honestly move the resonators where the secondaries go and I think alot of your rasp issues your having.

Glad I could help

doing that today! Hopefully!

robc1976 · 06-25-2013, 11:01 PM

Anybody think maybe the "Ultra quite" 1141 Resonators should go in the mid pipes where the secondary's where and the "regular bottle style" 1792 should go in the mid pipes?

robc1976 · 06-25-2013, 11:13 PM

Bought the "ultra quite" resonators here:

http://www.amazon.com/gp/aag/main?ie...A2IS69AN9A0OWP

robc1976 · 06-26-2013, 12:41 AM

Beginning to wonder if I can fit to 1792 resonators side by side...any input on someone who has done this?

triggz · 06-26-2013, 12:20 PM

If you can fit the quiet ones side by side where the secondaries used to be then I'm sure you won't need to put the bottle style anywhere. That's if the quiet ones are that much better than the bottle style. I doubt they will fit side by side tho because the bottle style is already a right squeeze there.

robc1976 · 06-26-2013, 12:46 PM

Quote:

Originally Posted by triggz

If you can fit the quiet ones side by side where the secondaries used to be then I'm sure you won't need to put the bottle style anywher. That's if the quiet ones are that much better than the bottle style. I doubt they will fit side by side tho because the bottle style is already a right squeeze there.

Going tomorrow to get the bottle style resonators in side by side, do you guys put them at the exact same spot or do you stagger them? This will be on my OEM setup just to see how it sounds.

triggz · 06-26-2013, 03:21 PM

Quote:

Originally Posted by robc1976

Going tomorrow to get the bottle style resonators in side by side, do you guys put them at the exact same spot or do you stagger them? This will be on my OEM setup just to see how it sounds.

Side by side. Direct replacement from the cats. Why don't you wait til the quiet ones come in and see if they fit there? That way you won't have to touch your bottle styles.

robc1976 · 06-26-2013, 05:16 PM

Quote:

Originally Posted by triggz

Side by side. Direct replacement from the cats. Why don't you wait til the quiet ones come in and see if they fit there? That way you won't have to touch your bottle styles.

I was going to save those for the new piping....when I get the new piping I will see if they fit there.

06-24-2013, 11:17 PM	#46
triggz Banned 56 Rep 1,224 Posts Drives: E92 335i Join Date: Jun 2010 Location: Toronto iTrader: (2)	If you're changing everything I would do 3" piping all the way from the downpipes. Any exhaust shop can get you aluminum piping. As long as you have stainless downpipes, heat shouldn't be an issue at all. Even if your resonators are smaller, they can easily expand the inlet/outlet to fit the 3" piping. Make sure to get a flex section added on after the downpipes. Do it right the first time
	Appreciate 0 Quote

06-24-2013, 11:30 PM	#50
triggz Banned 56 Rep 1,224 Posts Drives: E92 335i Join Date: Jun 2010 Location: Toronto iTrader: (2)	When I wanted to do a custom piece, I wanted to do the hpf system before they even made theirs. Catless downpipes > ypipe > 3.5" > super quiet resonator > 3.5" > yPipe > bottle resonators > tips
	Appreciate 0 Quote

06-25-2013, 12:54 AM	#53
TTurbo335 Second Lieutenant 21 Rep 200 Posts Drives: BMW 335i Join Date: Nov 2012 Location: So Cal iTrader: (2)	Rob soo the rasp started after you took out the second cats? I've been kickin this around for sometime now, but don't wanna start messing with the whole exhaust system. My question to you. Take the second kitties out or Keep em? AR Downpipes Secondary BMW Cats SuperSprint X pipe Dinan Free Flow Muffler. Sorry Don't know where to purchase slip on burnt titanium tips. I'll keep an eye out.
	Appreciate 0 Quote

06-25-2013, 11:01 PM	#60
robc1976 DIYER 614 Rep 5,521 Posts Drives: E90 335i Join Date: Mar 2012 Location: Illinois iTrader: (14)	Anybody think maybe the "Ultra quite" 1141 Resonators should go in the mid pipes where the secondary's where and the "regular bottle style" 1792 should go in the mid pipes? __________________ JB4 G5, Stage 3 LPFP, Stage 2 MOTIV PI, VM 6466 ST, Custom OCC W/ SS lines, ER FMIC, ER CP W/HKS BOV, M3 control arms, M3 guide rods, M3 upper links, M3 front & rear sway-bars, HPA rear toe arms, Wavetrac LSD, HPF Gen 2, DEFIV kit, KW clubsport, Delrin solid SF bushings, stoptech rotors, Rogue Tranny Mounts, 1M bumper, M3 CF hood, M3 fenders, M3 OEM sideskirts, Mtech rear bumper, CSL trunk, MORR VS8.2 rims 245/295
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06-25-2013, 11:13 PM	#61
robc1976 DIYER 614 Rep 5,521 Posts Drives: E90 335i Join Date: Mar 2012 Location: Illinois iTrader: (14)	Bought the "ultra quite" resonators here: http://www.amazon.com/gp/aag/main?ie...A2IS69AN9A0OWP __________________ JB4 G5, Stage 3 LPFP, Stage 2 MOTIV PI, VM 6466 ST, Custom OCC W/ SS lines, ER FMIC, ER CP W/HKS BOV, M3 control arms, M3 guide rods, M3 upper links, M3 front & rear sway-bars, HPA rear toe arms, Wavetrac LSD, HPF Gen 2, DEFIV kit, KW clubsport, Delrin solid SF bushings, stoptech rotors, Rogue Tranny Mounts, 1M bumper, M3 CF hood, M3 fenders, M3 OEM sideskirts, Mtech rear bumper, CSL trunk, MORR VS8.2 rims 245/295
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06-26-2013, 12:41 AM	#62
robc1976 DIYER 614 Rep 5,521 Posts Drives: E90 335i Join Date: Mar 2012 Location: Illinois iTrader: (14)	Beginning to wonder if I can fit to 1792 resonators side by side...any input on someone who has done this? __________________ JB4 G5, Stage 3 LPFP, Stage 2 MOTIV PI, VM 6466 ST, Custom OCC W/ SS lines, ER FMIC, ER CP W/HKS BOV, M3 control arms, M3 guide rods, M3 upper links, M3 front & rear sway-bars, HPA rear toe arms, Wavetrac LSD, HPF Gen 2, DEFIV kit, KW clubsport, Delrin solid SF bushings, stoptech rotors, Rogue Tranny Mounts, 1M bumper, M3 CF hood, M3 fenders, M3 OEM sideskirts, Mtech rear bumper, CSL trunk, MORR VS8.2 rims 245/295
	Appreciate 0 Quote

06-26-2013, 12:20 PM	#63
triggz Banned 56 Rep 1,224 Posts Drives: E92 335i Join Date: Jun 2010 Location: Toronto iTrader: (2)	If you can fit the quiet ones side by side where the secondaries used to be then I'm sure you won't need to put the bottle style anywhere. That's if the quiet ones are that much better than the bottle style. I doubt they will fit side by side tho because the bottle style is already a right squeeze there.
	Appreciate 0 Quote