Fitted more free flowing exhaust to 2008 bandit 1250 and now it runs rich down low revs, ok mid to high revs

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Fitted more free flowing exhaust to 2008 bandit 1250 and now it runs rich down low revs, ok mid to high revs

Post  stan2nz on Fri 16 Feb 2018, 5:58 pm

runs rich up to 3000 rpm but ok mid to high revs

bike shop told me to fit a power commander

Can a bike shop remap on a computer before you fit a comander and whats the better brand to buy

advice from people who have experience in this area would be good
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Re: Fitted more free flowing exhaust to 2008 bandit 1250 and now it runs rich down low revs, ok mid to high revs

Post  2wheelsagain on Sat 17 Feb 2018, 4:46 pm

First question.
How do you know its rich?
Second question.
What air cleaner?
Asking to ensure you're not chasing a problem thats not there or masking another problem

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Re: Fitted more free flowing exhaust to 2008 bandit 1250 and now it runs rich down low revs, ok mid to high revs

Post  NZspokes on Sat 17 Feb 2018, 5:52 pm

It wont be rich low down but very lean. Ive worked with these a fair bit now, flash is the way to go. Fit a K&N filter, cut the lid off the airbox cover and tell the dyno guy to shut the secondrys down over 5k rpm and turn off the O2 sensor then unplug it. 

Bang 30% more power.
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Re: Fitted more free flowing exhaust to 2008 bandit 1250 and now it runs rich down low revs, ok mid to high revs

Post  gus on Sat 17 Feb 2018, 10:20 pm

That's all ,just an end can ,every thing else is stock ?
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Re: Fitted more free flowing exhaust to 2008 bandit 1250 and now it runs rich down low revs, ok mid to high revs

Post  Bill & Ted on Fri 23 Feb 2018, 4:29 pm

On Phil tainton racing's dyno it sure doesnt look lean to me, stock is the red line.
can be found here
https://www.ptr.com.au/bandit-1250/


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everything is stock apart from muffler

Post  stan2nz on Sat 03 Mar 2018, 7:19 pm

i know its running rich as the internal of pipe is black and very sooty, when u rev it rich vapor comes out amd u can smell the fuel

put standard muffler on and its back to normal

im wondering what type of power comander have people found that works best to manually adjust fuel mapping
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Re: Fitted more free flowing exhaust to 2008 bandit 1250 and now it runs rich down low revs, ok mid to high revs

Post  Boatz on Sat 03 Mar 2018, 10:09 pm

Hey Stan,
             I have a Dobeck controller from Holeshot Performance. Bike runs fine. Check out the website.

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Re: Fitted more free flowing exhaust to 2008 bandit 1250 and now it runs rich down low revs, ok mid to high revs

Post  gus on Sun 04 Mar 2018, 9:21 am

What make of can did fit ?
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Re: Fitted more free flowing exhaust to 2008 bandit 1250 and now it runs rich down low revs, ok mid to high revs

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