too rich fuel mixture, what to adjust,??

[MattW]

From closed butterflies, the 'against stop' opening of the left hand butterfly is set using the TPS to give you the open angle and then the 'against stop' opening of the right hand TB is set using the left hand as a fixed reference (both with equal air screws of course).

However Roger 04 RT who posted earlier in this thread has done some excellent research and work on oilhead fuelling - I think his findings indicate that the base line TPS voltage shouldn't be the usually accepted .371V

But why did you do a zero-zero in the first place - did you suspect bad throttle stops?

 

[kennyc]

You haven't set the TPS using the zero-zero method, you've set the throttle body stop balance. Or at least you should have.

You've changed multiple variables all at the same time and then done a zero-zero from an unknown start point.
What did you do with the airbox and air temp sensor when yoy fitted the pod filters? That also affects the mixture.

QUOTE]

the zero-zero is the base line start point, surely,

air-temp sensor is still fitted under the p/tank,

is the air-temp sensor going to be able to "sense" a meaningful air temp in that position? surely if it could be fitted there then BMW wouldn't have bothered to put it in a position where it was directly in the airflow to the engine ?
maybe this will be of some help (although it would probably have paid to do the research before cannabilising the donor bike?)

 

[MattW]

so 40mpg is how much under the average mpg ?, for a standard 1100gs,
no compression check, but the engine seem's in fine mechanical fettle, no knock's, rattle's etc,

The worst I've ever seen on my 1100 was 46mpg and that was a fully loaded, two up thrash down through Germany at an 85mph cruise. It normally does 50 ish however I ride it.

 

[GARAGE HERMIT X2]

The worst I've ever seen on my 1100 was 46mpg and that was a fully loaded, two up thrash down through Germany at an 85mph cruise. It normally does 50 ish however I ride it.

right, i'm well down then,
from what i can gather, my only method of leaning the mixture off is swapping the CCP's,
but i'm sure i read that the mixture can be adjusted by the TPS, i'll have to try and find the article again,

 

[GARAGE HERMIT X2]

is the air-temp sensor going to be able to "sense" a meaningful air temp in that position? surely if it could be fitted there then BMW wouldn't have bothered to put it in a position where it was directly in the airflow to the engine ?
maybe this will be of some help (although it would probably have paid to do the research before cannabilising the donor bike?)

the air-temp sensor is sensing the same air under the tank as at the pod filter's, ie ambient, to prove a point i could alway's move the ats next to the pod filter, but i wont,

no need to have done research on the bike, it's just a motorcycle, not the space-shuttle,

 

[MattW]

no need to have done research on the bike, it's just a motorcycle, not the space-shuttle,

That's kind of ironic coming from the bloke who's screwed up the fuelling on his bike, doesn't know why and doesn't know how to put it right...

 

[GARAGE HERMIT X2]

From closed butterflies, the 'against stop' opening of the left hand butterfly is set using the TPS to give you the open angle and then the 'against stop' opening of the right hand TB is set using the left hand as a fixed reference (both with equal air screws of course).
yes, that's how i did it,

However Roger 04 RT who posted earlier in this thread has done some excellent research and work on oilhead fuelling - I think his findings indicate that the base line TPS voltage shouldn't be the usually accepted .371V
i'll have to read that,

But why did you do a zero-zero in the first place - did you suspect bad throttle stops?

my fault, thought the screw was all gunged up, it was of course the security paint, doh, but setting everything up from zero was no hardship,

 

[GARAGE HERMIT X2]

That's kind of ironic coming from the bloke who's screwed up the fuelling on his bike, doesn't know why and doesn't know how to put it right...

yes, it is, is'nt it,