Going to put a 3'' turbo back exhaust on my 335

jgannonloans · 12-04-2006, 10:56 PM

thats right all exhausts so far ar 2.5", we're gonna custom up a 3'' turbo back exhaust, going to use the stock cats if possible too

NaViT · 12-05-2006, 12:32 AM

go for it..

Ray · 12-05-2006, 12:58 AM

Sounds fun. Are you keeping the stock muffler?

I'm sure the cat restricts a lot of flow. Especially if they remain at 2.5in.

jgannonloans · 12-05-2006, 01:22 AM

no getting rid of everything probably freeing up a couple 100 pounds too.....if you look under the car the stock cats are about 3'' or so and we're gonna just modify the new exhaust right into the stock cats, im sure that they are just as good as after market high flow cats

mr2guy · 12-05-2006, 01:24 AM

So I'm guessing you'll be using a 3" turbo-back for each turbo (meaning two separate pipes) or are you going to merge them into one 3" pipe? Any specific muffler(s)?

jgannonloans · 12-05-2006, 01:34 AM

yeah two 3'' downpipes from the turbos, i forget the name of the muffler but its good shit stainless and weigh like 8lbs each

TheAcAvenger · 12-05-2006, 08:28 AM

Jgannon,

I'm looking into a custom setup as well. I was going to go with Apexi N1s because they offer an exhaust control valve that can be controlled from the drivers seat. (VA has ridiculous exhaust laws, so I could really use the ability to be stealth or speed with the press of a button).

I figure you can help me out on this question. They offer two types. NA with a 2.36inch "inlet" and a a 3.54inch "tip" and a Turbo with a 3inch "inlet" and a 4.53inch "tip"

When they use the words "inlet" and "tip", does "inlet" refer to the diameter of the opening, with "tip" referring to the length of the tail of the muffler?

herbz · 12-05-2006, 10:00 AM

finally. wanna see what this car is REALLY capable of sounding like

jgannonloans · 12-06-2006, 02:34 AM

not really sure about that particluar brand, but you can customize any setup just as long as it fits....they way i see it is why not go 3'' if it will fit, faster!!!

jgannonloans · 12-08-2006, 07:59 PM

burns stainless steal exhuast all custom made 3" turbo back utilizing the stock cats!!!! the mufflers weigh 2lbs a piece!!!

SayBBye · 12-08-2006, 09:23 PM

Quote:

Originally Posted by TheAcAvenger

Jgannon,

I'm looking into a custom setup as well. I was going to go with Apexi N1s because they offer an exhaust control valve that can be controlled from the drivers seat. (VA has ridiculous exhaust laws, so I could really use the ability to be stealth or speed with the press of a button).

I figure you can help me out on this question. They offer two types. NA with a 2.36inch "inlet" and a a 3.54inch "tip" and a Turbo with a 3inch "inlet" and a 4.53inch "tip"

When they use the words "inlet" and "tip", does "inlet" refer to the diameter of the opening, with "tip" referring to the length of the tail of the muffler?

The inlet is the portion of the canister in which the piping ill be connected to. So if something has a 2.5 inlet then that is the width of the inlet, meaning you would probably want to run 2.5" piping. The tip is what will be sticking outside of your rear bumper

So the bigger the size of the tip then the bigger the two holes in the back.

SayBBye · 12-08-2006, 09:28 PM

Glad to see someone is finally going to test out something bigger then a 2.5" system for this car. I'm curious to see if maybe 3" is going to rob some low end power due to the size of those turbos and the amount of exhaust air traveling through the piping. If it does rob power on stock boost levels then maybe a 70mm system would work best.

Have you thought of maybe also trying going from two 3" systems from the cats then joining then into one 3" pipe till the end? This could posile help better the overall flow pressure and show better results if the other system shows losses.

either way top end increase is going to jump very high.

jgannonloans · 12-09-2006, 01:35 PM

i really don't think that it will loose anything, just my assumption...those S4 guys put 3'' all day long. i thought of doing 2 pipes out of the turbos and joining into one, but i think that 2 separate pipes will flow better. If anyone is interested check out my thread http://www.e90post.com/forums/showthread.php?t=39164 this will be a bad ass system

denverlicious · 12-14-2006, 04:54 PM

us evo guys only use 2.75 or 3" anything less would be uncivilized.

but when i get my 335i i'll have to research more on this 2.5 vs 3" thing.

12-04-2006, 10:56 PM	#1
jgannonloans FOR SALE 15 Rep 279 Posts Drives: jet black 335i Join Date: Oct 2006 Location: Philly iTrader: (0)	Going to put a 3'' turbo back exhaust on my 335 thats right all exhausts so far ar 2.5", we're gonna custom up a 3'' turbo back exhaust, going to use the stock cats if possible too
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12-05-2006, 12:32 AM	#2
NaViT Banned 71 Rep 3,404 Posts Drives: 04 M3/E92 335i Join Date: Sep 2006 Location: N.Florida iTrader: (11)	go for it..
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12-05-2006, 12:58 AM	#3
Ray Member 313 Rep 22,825 Posts Drives: three series Join Date: Aug 2006 Location: sfCA iTrader: (0)	Sounds fun. Are you keeping the stock muffler? I'm sure the cat restricts a lot of flow. Especially if they remain at 2.5in.
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12-05-2006, 01:22 AM	#4
jgannonloans FOR SALE 15 Rep 279 Posts Drives: jet black 335i Join Date: Oct 2006 Location: Philly iTrader: (0)	no getting rid of everything probably freeing up a couple 100 pounds too.....if you look under the car the stock cats are about 3'' or so and we're gonna just modify the new exhaust right into the stock cats, im sure that they are just as good as after market high flow cats
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12-05-2006, 01:24 AM	#5
mr2guy N54 FTW 2 Rep 76 Posts Drives: 2008 BMW 535xi Wagon Join Date: Oct 2005 Location: Washington iTrader: (0)	So I'm guessing you'll be using a 3" turbo-back for each turbo (meaning two separate pipes) or are you going to merge them into one 3" pipe? Any specific muffler(s)? __________________ 2008 BMW 535XI WAGON Sapphire Schwarz on Schwarz
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12-05-2006, 01:34 AM	#6
jgannonloans FOR SALE 15 Rep 279 Posts Drives: jet black 335i Join Date: Oct 2006 Location: Philly iTrader: (0)	yeah two 3'' downpipes from the turbos, i forget the name of the muffler but its good shit stainless and weigh like 8lbs each
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12-05-2006, 08:28 AM	#7
TheAcAvenger Brigadier General 137 Rep 3,132 Posts Drives: 2018 R35 GTR / 2007 E92 335i Join Date: Apr 2006 Location: 757 > Nova > Denver iTrader: (1)	Jgannon, I'm looking into a custom setup as well. I was going to go with Apexi N1s because they offer an exhaust control valve that can be controlled from the drivers seat. (VA has ridiculous exhaust laws, so I could really use the ability to be stealth or speed with the press of a button). I figure you can help me out on this question. They offer two types. NA with a 2.36inch "inlet" and a a 3.54inch "tip" and a Turbo with a 3inch "inlet" and a 4.53inch "tip" When they use the words "inlet" and "tip", does "inlet" refer to the diameter of the opening, with "tip" referring to the length of the tail of the muffler? __________________ 2018 R35 GT-R Cicio800 \| 2007 E92 335i - RB Turbos, TC Kline DA Coils, HPA M3 Suspension, Quaife LSD, Stoptech BBK, JB4, FuelIT, AR Downpipes, RDSport Quads, Stett OC, Helix IC, Volk TE-37, Vorsteiner V-35, OSS Headlights \| Retired - 2015 F82 M4
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12-05-2006, 10:00 AM	#8
herbz hi 98 Rep 837 Posts Drives: '86 325e Join Date: Oct 2006 Location: outside boston MA iTrader: (0)	finally. wanna see what this car is REALLY capable of sounding like
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12-06-2006, 02:34 AM	#9
jgannonloans FOR SALE 15 Rep 279 Posts Drives: jet black 335i Join Date: Oct 2006 Location: Philly iTrader: (0)	not really sure about that particluar brand, but you can customize any setup just as long as it fits....they way i see it is why not go 3'' if it will fit, faster!!!
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12-08-2006, 07:59 PM	#10
jgannonloans FOR SALE 15 Rep 279 Posts Drives: jet black 335i Join Date: Oct 2006 Location: Philly iTrader: (0)	burns stainless steal exhuast all custom made 3" turbo back utilizing the stock cats!!!! the mufflers weigh 2lbs a piece!!!
	Appreciate 0 Quote

12-08-2006, 09:28 PM	#12
SayBBye Private 4 Rep 54 Posts Drives: Soon to Be Join Date: Nov 2006 Location: LA, CA iTrader: (0)	Glad to see someone is finally going to test out something bigger then a 2.5" system for this car. I'm curious to see if maybe 3" is going to rob some low end power due to the size of those turbos and the amount of exhaust air traveling through the piping. If it does rob power on stock boost levels then maybe a 70mm system would work best. Have you thought of maybe also trying going from two 3" systems from the cats then joining then into one 3" pipe till the end? This could posile help better the overall flow pressure and show better results if the other system shows losses. either way top end increase is going to jump very high. __________________ 2007 BMW 335i - On The Way 2007 Toyota Yaris - Current 2004 Honda S2000 - Sold 1986 Toyota Corolla Hatchback - Sold
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12-09-2006, 01:35 PM	#13
jgannonloans FOR SALE 15 Rep 279 Posts Drives: jet black 335i Join Date: Oct 2006 Location: Philly iTrader: (0)	i really don't think that it will loose anything, just my assumption...those S4 guys put 3'' all day long. i thought of doing 2 pipes out of the turbos and joining into one, but i think that 2 separate pipes will flow better. If anyone is interested check out my thread http://www.e90post.com/forums/showthread.php?t=39164 this will be a bad ass system
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12-14-2006, 04:54 PM	#14
denverlicious New Member 1 Rep 15 Posts Drives: 05 evo Join Date: Nov 2006 Location: redondo beach, ca iTrader: (0)	us evo guys only use 2.75 or 3" anything less would be uncivilized. but when i get my 335i i'll have to research more on this 2.5 vs 3" thing.
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