How is you mpg after install market ehaust/ tuned

jasonlu · 05-10-2011, 04:16 PM

Hi,guys. Perp to get a aftermarket exhaust system.and maybe get a tune. Not sure which one I want after reading the sticker thread. Just want to know how your car runs after install a new exhaust or tuned. What's the mpg?

Also, does anyone know how BMW performance exhaust system works?? I saw that on the BMW official website. If I get a aftermarket exhaust, will it influence my warranty?

Sorry for so many question.

Syndicategt · 05-10-2011, 04:18 PM

Roughly 410 hp on pump + meth......I saw 30 MPG going from San Fran to LA down I5. She did better on gas at 80 mph vs 65 mph.

BMW Perf. exhaust sounds amazing....it's my 2nd favorite exhuast. However, it's only a muffler, so you are stuck with your mid pipes and cats that go with those. But for $1100 you can find a used downpipe back like AE for the same price. Add some AR downpipes with the exhaust for even better HP gains and sound (note this will void warranty if having turbo work done).

Syndicategt · 05-10-2011, 04:22 PM

BMW Perf exhaust won't effect anything on the warranty, period dot.

jasonlu · 05-10-2011, 04:37 PM

Quote:

Originally Posted by Syndicategt

Roughly 410 hp on pump + meth......I saw 30 MPG going from San Fran to LA down I5. She did better on gas at 80 mph vs 65 mph.

BMW Perf. exhaust sounds amazing....it's my 2nd favorite exhuast. However, it's only a muffler, so you are stuck with your mid pipes and cats that go with those. But for $1100 you can find a used downpipe back like AE for the same price. Add some AR downpipes with the exhaust for even better HP gains and sound (note this will void warranty if having turbo work done).

so if i get a aftermarket exhaust, it will not void my warranty. but if i tuned it, it will definitrly void it.
and if is bmw performance exhaust, it will be ok?
any opinion?

Syndicategt · 05-10-2011, 05:03 PM

Correct, it's a OE BMW part, you are fine with the performance exhuast. Only thing it changes are the mufflers, doesn't touch the cats or mid pipes.

jasonlu · 05-10-2011, 05:53 PM

Quote:

Originally Posted by Syndicategt

Correct, it's a OE BMW part, you are fine with the performance exhuast. Only thing it changes are the mufflers, doesn't touch the cats or mid pipes.

thanks man, appreciate it.
think i might go get a aftermarket exhaust first, then tuned it after warranty experied.

Thumperx · 05-10-2011, 06:53 PM

Quote:

Originally Posted by Syndicategt

I saw 30 MPG going from San Fran to LA down I5. She did better on gas at 80 mph vs 65 mph.

X2
I was pushing 28 mpg when I was traveling 25 miles each way on 280 . Now I work 3.5 miles away, and I get 19.3 mpg.

I agree that you'll get better fuel mileage at 80 than 65.

Syndicategt · 05-10-2011, 07:06 PM

Quote:

Originally Posted by jasonlu

thanks man, appreciate it.
think i might go get a aftermarket exhaust first, then tuned it after warranty experied.

Just FYI, performance wise, a aftermarket exhaust is the worst bang for the buck. You are lucky to get 10 hp (only if tuned) about 5 hp with no tune, only thing the exhuast will really do on a 335 is change the sound and looks of the tips.

ceb · 05-10-2011, 07:59 PM

Quote:

Originally Posted by jasonlu

thanks man, appreciate it.
think i might go get a aftermarket exhaust first, then tuned it after warranty experied.

A aftermarket exhaust may well cause warranty issues. The sole exception is the BMW Performance exhaust that is a BMW product made for your car.

jasonlu · 05-10-2011, 08:01 PM

Quote:

Originally Posted by Syndicategt

Quote:

Originally Posted by jasonlu

thanks man, appreciate it.
think i might go get a aftermarket exhaust first, then tuned it after warranty experied.

Just FYI, performance wise, a aftermarket exhaust is the worst bang for the buck. You are lucky to get 10 hp (only if tuned) about 5 hp with no tune, only thing the exhuast will really do on a 335 is change the sound and looks of the tips.

Hmm, but how much is a bmw performance exhaust?
I saw it on the BMW official . It's about $1600 not installed.

mundo74 · 05-10-2011, 09:00 PM

Quote:

Originally Posted by jasonlu

Hmm, but how much is a bmw performance exhaust?
I saw it on the BMW official . It's about $1600 not installed.

Just got mine today from tischer BMW for less than 1600 shipped

JayKay335i · 05-10-2011, 09:05 PM

One thread would have been enough

jasonlu · 05-10-2011, 09:11 PM

Quote:

Originally Posted by JayKay335i

One thread would have been enough

Sorry. Just want to hear more idea.

tunachris · 05-11-2011, 07:41 AM

I installed a BMW Perf. Exhaust first, then DCI and a JB3. My thinking is the tune and intake can be removed for dealer visits, but the exhaust can't, hence the BMW exhaust.

Also felt that opening up the intake and exhaust should add to the tune. I am going to change to a LSD next, as I don't think this is detectable unless someone is looking for it specifically. Would also like to get a bigger FMIC, but will most likely will wait till the car is out of warranty.

I am in a good situation, as my dealer is mod freindly, but I still plan on proceeding with caution.

Syndicategt · 05-11-2011, 10:56 AM

Quote:

Originally Posted by mundo74

Just got mine today from tischer BMW for less than 1600 shipped

Buy it form Tischer BMW for $1100 and take it to an indy shop and install for another $100-200.

OP, what are your goals on having an aftermarket exhaust? Sound, looks, or performance. Because the BMW PE is only good for sound IMO (no exhaust will give you much Hp and the PE tips are just ugly).

Edward · 05-11-2011, 11:21 AM

PE sounds very good but don't get exhaust alone for hp gains. The biggest power gainer along the exhaust pathway is replacing the downpipes and removing cats which will smell like a WT river boat + you won't pass smog when that time comes.

05-10-2011, 04:16 PM	#1
jasonlu Captain 34 Rep 636 Posts Drives: BMW335i Join Date: Apr 2011 Location: SAN DIEGO iTrader: (4)	How is you mpg after install market ehaust/ tuned Hi,guys. Perp to get a aftermarket exhaust system.and maybe get a tune. Not sure which one I want after reading the sticker thread. Just want to know how your car runs after install a new exhaust or tuned. What's the mpg? Also, does anyone know how BMW performance exhaust system works?? I saw that on the BMW official website. If I get a aftermarket exhaust, will it influence my warranty? Sorry for so many question.
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05-10-2011, 04:18 PM	#2
Syndicategt Brigadier General 153 Rep 3,730 Posts Drives: 335i Join Date: Sep 2009 Location: Nor Cal iTrader: (11)	Roughly 410 hp on pump + meth......I saw 30 MPG going from San Fran to LA down I5. She did better on gas at 80 mph vs 65 mph. BMW Perf. exhaust sounds amazing....it's my 2nd favorite exhuast. However, it's only a muffler, so you are stuck with your mid pipes and cats that go with those. But for $1100 you can find a used downpipe back like AE for the same price. Add some AR downpipes with the exhaust for even better HP gains and sound (note this will void warranty if having turbo work done). __________________ 2008 BMW 335i e90 - Sold - Rob Beck Turbos / PROcede V5 / Aquamist HFS-4 / AR Downpipes / AE Exhaust / ER Comp FMIC / ER CP / TiAL BOV / Custom Intake / RPI Scoops / Quaife LSD / Swift-Koni Coilovers / DSS HS / Morr VS8.2 Sig Black / Michelin PSS / P3 Boost Guage / M3 body / M3 steering wheel / Adam's Rotors / Hawk HPS / SS lines /
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05-10-2011, 04:22 PM	#3
Syndicategt Brigadier General 153 Rep 3,730 Posts Drives: 335i Join Date: Sep 2009 Location: Nor Cal iTrader: (11)	BMW Perf exhaust won't effect anything on the warranty, period dot. __________________ 2008 BMW 335i e90 - Sold - Rob Beck Turbos / PROcede V5 / Aquamist HFS-4 / AR Downpipes / AE Exhaust / ER Comp FMIC / ER CP / TiAL BOV / Custom Intake / RPI Scoops / Quaife LSD / Swift-Koni Coilovers / DSS HS / Morr VS8.2 Sig Black / Michelin PSS / P3 Boost Guage / M3 body / M3 steering wheel / Adam's Rotors / Hawk HPS / SS lines /
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05-10-2011, 05:03 PM	#5
Syndicategt Brigadier General 153 Rep 3,730 Posts Drives: 335i Join Date: Sep 2009 Location: Nor Cal iTrader: (11)	Correct, it's a OE BMW part, you are fine with the performance exhuast. Only thing it changes are the mufflers, doesn't touch the cats or mid pipes. __________________ 2008 BMW 335i e90 - Sold - Rob Beck Turbos / PROcede V5 / Aquamist HFS-4 / AR Downpipes / AE Exhaust / ER Comp FMIC / ER CP / TiAL BOV / Custom Intake / RPI Scoops / Quaife LSD / Swift-Koni Coilovers / DSS HS / Morr VS8.2 Sig Black / Michelin PSS / P3 Boost Guage / M3 body / M3 steering wheel / Adam's Rotors / Hawk HPS / SS lines /
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05-10-2011, 09:05 PM	#12
JayKay335i Banned 189 Rep 5,046 Posts Drives: ///M323 DCT Join Date: Apr 2009 Location: North Dakota; its best DUHHHHHH iTrader: (1)	One thread would have been enough
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05-11-2011, 07:41 AM	#14
tunachris First Lieutenant 17 Rep 363 Posts Drives: 2010 E92 Join Date: Oct 2010 Location: Azusa, CA iTrader: (0) Garage List 2010 E92 [0.00]	I installed a BMW Perf. Exhaust first, then DCI and a JB3. My thinking is the tune and intake can be removed for dealer visits, but the exhaust can't, hence the BMW exhaust. Also felt that opening up the intake and exhaust should add to the tune. I am going to change to a LSD next, as I don't think this is detectable unless someone is looking for it specifically. Would also like to get a bigger FMIC, but will most likely will wait till the car is out of warranty. I am in a good situation, as my dealer is mod freindly, but I still plan on proceeding with caution.
	Appreciate 0 Quote

05-11-2011, 11:21 AM	#16
Edward Colonel 377 Rep 2,982 Posts Drives: 2013.9999 E92 Jerez ZCP Join Date: May 2010 Location: Los Angeles iTrader: (2)	PE sounds very good but don't get exhaust alone for hp gains. The biggest power gainer along the exhaust pathway is replacing the downpipes and removing cats which will smell like a WT river boat + you won't pass smog when that time comes.
	Appreciate 0 Quote