MPG Increased after new cans

chris-red · Have you considered a TDM? Joined: 21 Sep 2005 Karma :

It would seem my MPG is considerably better after buying my new cans. I just filled up 17l after doing 190miles, I used to get 170 miles out of 19/20l.

My old MPG could go to as little as under 40 whereas now I'm getting 50+. I'm confused I have been doing similar rides which break down to about 40% motorway 40% in town 20% spirited in the lanes.

Would new cans increase MPG buy this much? If so that is probably the best £440 I have ever spent!
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craigs23 · Mr Muscle Joined: 08 Jun 2005 Karma :

A free'er flowing exhaust may tend to make a bike run lean.

Wafer_Thin_Ham · Super Spammer Joined: 18 Nov 2005 Karma :

Did you get it re-mapped too??
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Dr. DaveJPS · World Chat Champion Joined: 24 May 2008 Karma :

depending on what bike you have/ how old it is, there have been a few reviews (i think in RIDE) sowing that you can get better fuel economy with a free-er flowing exhaust as with current noise regs one of the manufacturers tricks is to set the bike to run rich so un-burnt fuel makes it as far as the exhaust, causing it to sound quieter

(feel free to correct me if i've got this wrong) Smile

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Wafer_Thin_Ham · Super Spammer Joined: 18 Nov 2005 Karma :

IIRC they included a remap in that test.
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chris-red · Have you considered a TDM? Joined: 21 Sep 2005 Karma :

No remap, just 2 slip on scorpions. I have the baffles in too, but it is still much louder than stock.
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Well, you know what they say. If you want to save the world, you have to push a few old ladies down the stairs.
Skudd:- Perhaps she just thinks you are a window licker and is being nice just in case she becomes another Jill Dando.
WANTED:- Fujinon (Fuji) M42 (Screw on) lenses, let me know if you have anything.

Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

Hi

When the Bandit engine was first tuned it greatly increased the mpg (carb settings had been guessed, this was before it was run in).

Setting it up properly changed that.

Quite easy to land up with a point in the rev range where it is running lean, and if that happens to be a commonly used point then mpg will likely be improved,

All the best

Keith
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Ichy · World Chat Champion Joined: 15 Jul 2005 Karma :

chris-red · Have you considered a TDM? Joined: 21 Sep 2005 Karma :

Nah it would mean taking the tank off, but the temp gauage is the same as it was before getting up to the start of the white when warmed up and staying there unless in traffic.
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Well, you know what they say. If you want to save the world, you have to push a few old ladies down the stairs.
Skudd:- Perhaps she just thinks you are a window licker and is being nice just in case she becomes another Jill Dando.
WANTED:- Fujinon (Fuji) M42 (Screw on) lenses, let me know if you have anything.

Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

Hi

Temp gauge is pretty meaningless. Will be plenty of spare capacity in the cooling system to keep the water temperature down, but the combustion temperature is very different.

All the best

Keith
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Kris · World Chat Champion Joined: 03 Feb 2002 Karma :

Scorpian cans are supposed to be the most accurate with regards to matching the existing fuelling requirements, according to a dyno test by DIRE mag or similar....

I think the worst was Art ...
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Nixon · Brolly Dolly Joined: 23 Jun 2007 Karma :

Scouse · World Chat Champion Joined: 12 Feb 2004 Karma :

Surprised that nobody has mentioned that it may just be due to him riding at lower revs to keep the noise down Laughing

Dezeaz · Borekit Bruiser Joined: 18 May 2007 Karma :

I fitted a scorpion can a few months back and have noticed improved MPG. Scorpion told me i would not have to remap.

Kris · World Chat Champion Joined: 03 Feb 2002 Karma :

Nixon · Brolly Dolly Joined: 23 Jun 2007 Karma :

Kris · World Chat Champion Joined: 03 Feb 2002 Karma :

kal9001 · Trackday Trickster Joined: 14 Aug 2005 Karma :

well if they got rid of all this noise crap then you could put on a race pip and can, free flow air filter and despite it being noisy the engine will work less to get rid of exaust gasses and draw in new gasses, if mapped properly you sould be showing more power at the same throttle setting, thus same speed with less throttle and you save fuel.
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