Interest in 3.5" Single Pipe Titanium Exhaust for 335i?

ironic · 05-30-2011, 02:33 AM

Hey All,

I've been looking at exhaust solutions for a while now and have owned a few exhaust as well. There are a number of titanium exhausts out there but they are all dual 2.5" pipes. I love the design of the AMS exhaust and wonder how light that system could be if it were made in titanium. The HPF exhaust offers larger diameter piping but it has no mufflers and is tough for daily driving as a result.

So, is there any interest in a 3.5" single pipe exhaust similar in style to AMS and HPF made in full titanium? I'm researching options for this now but if there is enough interest I may invest some money to create a short run of these.

Specs would be
Full titanium w/ burnt blue tips as option
Options for quad tips
Titanium single muffler
3.5" single piping all the way back
Playing with idea of having hi-flow cats that drop in via flanges that can be swapped out with a solid pipe for track events

AndreM818 · 05-30-2011, 03:45 AM

Under 1k

D335NUTZ · 05-30-2011, 08:25 AM

Quote:

Originally Posted by AndreM818

Under 1k

It's going to be full titanium... Doubt it will be anywhere near 1K

MKE_M3 · 05-30-2011, 08:32 AM

sounds awesome, especially the part about the cats, but for $3k or more (which they probably will be) I'm not sure it's worth it.

vasillalov · 05-30-2011, 08:54 AM

So wait...

Your exhaust would have to merge the two downpipes together, only to split up again at the back? Sounds like a waste of time.

Besides, a 3.5' pipe will flow LESS than dual 2.5" pipes.

supahdave · 05-30-2011, 11:59 AM

The difference between flow is marginal with 3.5" being .2cubic inches less. Curious about weight difference.

Forcefed3 · 05-30-2011, 12:01 PM

Too expensive.

ironic · 05-30-2011, 12:14 PM

Quote:

Originally Posted by supahdave

The difference between flow is marginal with 3.5" being .2cubic inches less. Curious about weight difference.

Could go for 4" all the way through instead of 3.5". I chose 3.5" because it was larger than AMS which was rated good for at least 500hp if I remember correctly. The HPF exhaust is also 3.5"

It will way less than AMS and HPF which are already some of the lightest exhaust systems on the market

ironic · 05-30-2011, 12:17 PM

Quote:

Originally Posted by vasillalov

Your exhaust would have to merge the two downpipes together, only to split up again at the back? Sounds like a waste of time.

I don't know how else to address that except to only have 1 set of tailpipes and a fake section or a set of muffler tips that split off to the side but I'd think true exhaust tips would be much more desirable. Plus I dont think there wuld be any performance loss by doing that

creaminz · 06-03-2011, 06:13 AM

Im interested...quads...3.5"....ss or titanium...

ar design · 06-03-2011, 09:21 AM

800+whp has been made on 3". I am amused at people that think 3.5" isnt enough

TurboSid · 06-03-2011, 09:37 AM

a short run titanium exhaust might not be in everyone's price range. But if its reasonably priced I might be interested.

XPO186 · 06-03-2011, 10:20 AM

Quote:

Originally Posted by ironic

I don't know how else to address that except to only have 1 set of tailpipes and a fake section or a set of muffler tips that split off to the side but I'd think true exhaust tips would be much more desirable. Plus I dont think there wuld be any performance loss by doing that

You could design the muffler as a single inlet / dual (or quad) outlet, a la E46 M3:

Imagine this design with a single inlet into the muffler and a dual/quad outlets straight out.

Quote:

Originally Posted by ar design

800+whp has been made on 3". I am amused at people that think 3.5" isnt enough

Was that on a single turbo setup with a single outlet?

I'm thinking the post downpipe merge into the 3" midpipe, plus the split into dual mufflers/outlets is where the restriction occurs, so increasing the diameter is to account for that. Still, I'm not convinced that's even necessary at current power levels (FBO + upgraded twins).

Quote:

Originally Posted by TurboSid

a short run titanium exhaust might not be in everyone's price range. But if its reasonably priced I might be interested.

I'd be interested as well. Most people can't justify the price of Ti exhaust systems because similar gains and sound can be had from an SS system. But the real merit of Ti comes from the weight savings.

XPO186 · 06-03-2011, 10:28 AM

OP, as part of the spec list I'd also like to see:

Fully flanged
Drop-in HFC, resonator, or straight pipe options
Adjustable tips
More tip options (3.5 or 4" dual, larger 3.5" quad) <--just a "nice to have"
Tone developed with catless DPs in mind

zeenon53 · 06-03-2011, 10:32 AM

For the price of something like this I would rather have the akrapovic titanium exhaust.

D335NUTZ · 06-03-2011, 10:14 PM

Quote:

Originally Posted by zeenon53

For the price of something like this I would rather have the akrapovic titanium exhaust.

QFT

05-30-2011, 02:33 AM	#1
ironic Major General 254 Rep 8,338 Posts Drives: Jet Black 335i Join Date: Dec 2006 Location: San Francisco, Ca iTrader: (22)	Interest in 3.5" Single Pipe Titanium Exhaust for 335i? Hey All, I've been looking at exhaust solutions for a while now and have owned a few exhaust as well. There are a number of titanium exhausts out there but they are all dual 2.5" pipes. I love the design of the AMS exhaust and wonder how light that system could be if it were made in titanium. The HPF exhaust offers larger diameter piping but it has no mufflers and is tough for daily driving as a result. So, is there any interest in a 3.5" single pipe exhaust similar in style to AMS and HPF made in full titanium? I'm researching options for this now but if there is enough interest I may invest some money to create a short run of these. Specs would be Full titanium w/ burnt blue tips as option Options for quad tips Titanium single muffler 3.5" single piping all the way back Playing with idea of having hi-flow cats that drop in via flanges that can be swapped out with a solid pipe for track events __________________ Widebody 335i Project Car BUILD \| PHOTOSHOOT
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05-30-2011, 03:45 AM	#2
AndreM818 Stealth Bomber 41 Rep 564 Posts Drives: this ^ Join Date: Dec 2009 Location: SoCal iTrader: (3)	Under 1k
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05-30-2011, 08:32 AM	#4
MKE_M3 Lieutenant Colonel 65 Rep 1,705 Posts Drives: 2011 e90 M3 Join Date: Feb 2009 Location: Milwaukee, WI iTrader: (0)	sounds awesome, especially the part about the cats, but for $3k or more (which they probably will be) I'm not sure it's worth it. __________________
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05-30-2011, 08:54 AM	#5
vasillalov Mad Linux Guru On The Loose 1121 Rep 5,396 Posts Drives: 2008 335i Sedan, 2023 M3 Join Date: Aug 2009 Location: Chicago, IL iTrader: (5) Garage List 2023 BMW M3 [0.00] 2008 335i E90 [8.00]	So wait... Your exhaust would have to merge the two downpipes together, only to split up again at the back? Sounds like a waste of time. Besides, a 3.5' pipe will flow LESS than dual 2.5" pipes. __________________ 6MT \| COBB \| AR \| AE \| Forge DV \| HPF \| P3 Gauge \| Hybrid Intake \| O.S.Giken TCD \| All M3 bits \| TCKLine \| StopTech \| UUC \| ER \| SPEC
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05-30-2011, 11:59 AM	#6
supahdave Lieutenant 24 Rep 563 Posts Drives: 09 AW 335i Sedan Join Date: Feb 2009 Location: San Diego, CA iTrader: (4)	The difference between flow is marginal with 3.5" being .2cubic inches less. Curious about weight difference.
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05-30-2011, 12:01 PM	#7
Forcefed3 Banned 127 Rep 4,732 Posts Drives: 2008 335i Join Date: May 2010 Location: South iTrader: (2) Garage List 2008 335i [1.00]	Too expensive.
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06-03-2011, 06:13 AM	#10
creaminz Major General 545 Rep 7,705 Posts Drives: E90 LCI Join Date: Sep 2005 Location: So. Cal iTrader: (33)	Im interested...quads...3.5"....ss or titanium...
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06-03-2011, 09:21 AM	#11
ar design 297 Rep 4,408 Posts Drives: 04 M3 Join Date: Jan 2008 Location: Denver, CO iTrader: (9)	800+whp has been made on 3". I am amused at people that think 3.5" isnt enough
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06-03-2011, 09:37 AM	#12
TurboSid Brigadier General 1112 Rep 3,261 Posts Drives: 2022 M4Cx BSM/FR Join Date: Apr 2008 Location: Florida iTrader: (4) Garage List 2008 335i [0.00]	a short run titanium exhaust might not be in everyone's price range. But if its reasonably priced I might be interested. __________________ 2022 BSM/FR M4 Competition X-Drive 2017 MW/SO M4 ZCP [SOLD] • 2015 MW/SO M4 M-DCT FBO [SOLD] • 2011 AW/CR 335is DCT FBO [SOLD] • 2008 AW/CR 335i 6MT FBO [SOLD]
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06-03-2011, 10:28 AM	#14
XPO186 Colonel 128 Rep 2,740 Posts Drives: E92 335i Join Date: May 2007 Location: Albany, NY iTrader: (19)	OP, as part of the spec list I'd also like to see: Fully flanged Drop-in HFC, resonator, or straight pipe options Adjustable tips More tip options (3.5 or 4" dual, larger 3.5" quad) <--just a "nice to have" Tone developed with catless DPs in mind __________________
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06-03-2011, 10:32 AM	#15
zeenon53 Major 39 Rep 1,154 Posts Drives: BMW Join Date: Apr 2010 Location: obx iTrader: (3)	For the price of something like this I would rather have the akrapovic titanium exhaust.
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