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E90 M3 (Sedan) | E92 M3 (Coupe) | E93 M3 (Convertible) (2008-2013) {Engine: S65 - Max Hp: 414 hp (420 hp Euro) at 8,300 rpm / 295 lb/ft at 3,900 rpm}


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Old Sun, Mar-20-2011, 12:46:28 PM   #11
m3e46freak
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Default Re: New exhaust= 1.5 mpg better average!!!

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Old Sun, Mar-20-2011, 03:06:32 PM   #12
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Default Re: New exhaust= 1.5 mpg better average!!!

its an axle back exhaust, any help from $3.75 a gallon costs, I will take it. just thought I would share....
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Old Sun, Mar-20-2011, 03:38:19 PM   #13
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Default Re: New exhaust= 1.5 mpg better average!!!

I get 22 mpg @ 70-73 mph, stock exhaust,19" wheels, recommended tire pressure. Best ever over 300 mile trip was 24 mpg at 65-70 mph. Around town 13-14 mpg, many cold starts, all city streets, short trips, no highway.
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Old Sun, Mar-20-2011, 06:33:01 PM   #14
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This thread is frustrating me! How in the hell are your V8's getting better milage than an inline 6!? Haha! I got on 19MPG on my last tank and I was pretty stoked about that
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Old Sun, Mar-20-2011, 06:37:14 PM   #15
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Originally Posted by natty99 View Post
really...

1.5mpg is WELL WITHIN the +/- differential when it comes to average mpg. With so many variables affecting gas mileage, I'd really love to hear how you came across this (unbiased) conclusion that it HAS to be the exhaust. Not scientific, but that works for me

All I read is some guy trying to use every trick in the bag to sell an exhaust to a market already flooded with exhausts. Yeah, good luck
Every time I've an exhaust to any of my cars I've gotten better gas milage taking the same roads, driving the same speed. I've had the same job for three years, driven three cars the same rout. Added an exhaust to two of them. Averaged better gas milage everytime!
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Old Sun, Mar-20-2011, 06:46:34 PM   #16
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Default Re: New exhaust= 1.5 mpg better average!!!

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Originally Posted by suaveflooder View Post
This thread is frustrating me! How in the hell are your V8's getting better milage than an inline 6!? Haha! I got on 19MPG on my last tank and I was pretty stoked about that

You driving to damn fast or...

change your fuel/air filters/injector flush/spark plugs.
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Old Sun, Mar-20-2011, 07:48:42 PM   #17
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Originally Posted by m3e46freak View Post
You driving to damn fast or...

change your fuel/air filters/injector flush/spark plugs.
Probably the first . Gotta love having a valentine

Then again, most of the E46's are getting around where I am
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Old Tue, Mar-22-2011, 09:04:04 AM   #18
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Default Re: New exhaust= 1.5 mpg better average!!!

I duct taped all the seams on the front end of my M3. Gas mileage improved 2 mpg and it cost me $3.99 for the roll of duct tape. I also added this and my mileage increased 20%:

http://www.amazon.com/Fuel-OptiMiser.../dp/B000E6HEQS

Those pesky "clusters of fuel molecules"...I just hate them.
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Old Sun, Mar-27-2011, 05:31:32 AM   #19
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Default Re: New exhaust= 1.5 mpg better average!!!

Quote:
Originally Posted by JIO View Post
http://www.amazon.com/Fuel-OptiMiser.../dp/B000E6HEQS

Those pesky "clusters of fuel molecules"...I just hate them.


LOL

I love the idea that people believe some POS product that costs $300 is going to improve mileage, and increment horsepower and yet car companies insist on spending tens of millions of dollars redesigning engines to get gains that are much smaller than that magical product!

I wonder if one daisy-chained six or seven OptiMisers together... would a 1L engine end up with the output of a Lambo?
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Old Sun, Mar-27-2011, 02:16:02 PM   #20
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Default Re: New exhaust= 1.5 mpg better average!!!

Quote:
Originally Posted by JIO View Post
I duct taped all the seams on the front end of my M3. Gas mileage improved 2 mpg and it cost me $3.99 for the roll of duct tape. I also added this and my mileage increased 20%:

http://www.amazon.com/Fuel-OptiMiser.../dp/B000E6HEQS

Those pesky "clusters of fuel molecules"...I just hate them.

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Discussing New exhaust= 1.5 mpg better average!!! in the E90 M3 (Sedan) | E92 M3 (Coupe) | E93 M3 (Convertible) (2008-2013) Forum - {Engine: S65 - Max Hp: 414 hp (420 hp Euro) at 8,300 rpm / 295 lb/ft at 3,900 rpm} at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)