idle rich

[cookie]

2000 1150GS, k & n, y-piece, remus revolution, techlusion tfi 1030, disconnected lambda probe, steptoe cat code link mod.

bike runs fine but plugs are sooty black after normal toodling about. higher sped plug chops are much leaner looking light grey deposits.

stuck a CO analyser on it today & it was reading very high 8.00% odd at idle, should be 2/3.00 i believe. i get this reading even if i disconnect the techlusion, so it's a basic fault with bike set up.

analyser is normal garage blue point box, not calibrated, but i've used them before & it seems to be in the ball park when tested on a car that's just been MOTed.

could be 'cos probe is disconnected i suppose.

how can i lean off the mixture as there is no adjustment that i can see?

TPS adjustment?

only thing i can think of is to put in a std. cat code plug/link of some description, then richen up as neseccary with techlusion.

any other ideas?

is there a mixture screw somewhere i don't know about?

should i just leave it alone as bike goes very well?

 

[ag1s]

2000 1150GS, k & n, y-piece, remus revolution, techlusion tfi 1030, disconnected lambda probe, steptoe cat code link mod.

bike runs fine but plugs are sooty black after normal toodling about. higher sped plug chops are much leaner looking light grey deposits.

stuck a CO analyser on it today & it was reading very high 8.00% odd at idle, should be 2/3.00 i believe. i get this reading even if i disconnect the techlusion, so it's a basic fault with bike set up.

analyser is normal garage blue point box, not calibrated, but i've used them before & it seems to be in the ball park when tested on a car that's just been MOTed.

could be 'cos probe is disconnected i suppose.

how can i lean off the mixture as there is no adjustment that i can see?

TPS adjustment?

only thing i can think of is to put in a std. cat code plug/link of some description, then richen up as neseccary with techlusion.

any other ideas?

is there a mixture screw somewhere i don't know about?

should i just leave it alone as bike goes very well?

I think that when disconnecting the lambda sensor, youreplace it with a potentiometer that adjusts the CO mixture.

Why disconecting the lambda in the first place? Do you have any significant power gain?

 

[cookie]

Re: Re: idle rich

Why disconecting the lambda in the first place? Do you have any significant power gain?

you're supposed to do it according to the instructions for the techlusion, otherwise as the techlusion richens the mixture the closed loop system weakens it off again.

i think that's what it needs at idle though.

no mention of adjustment pot in techlusion manual. says adjust mixture to 2/3%.

fails to say how

 

[ferguscawley]

Cookie

As far as I know, the techlusion adjusts the signals that the ECU are already sending to the injectors. If the signlas already being sent are making the bike run rich, then the techlusion will only make it run richer still.

Re-connect the lambda probe asap. With this disconnected, the engine ECU does not have any idea how rich / lean the mixture is. The ECU will pour more fuel in (to be on the safe side) and cause your rich running.

With the lamba probe in, you will have closed-loop control as normal. (without the lambda probe - control is open-loop i.e. no feedback so the ECU is guessing how much fuel to add - not good). Then use the techlusion to richen this mixture up a bit where you need to.

Ferg

 

[cookie]

i know what you're saying but this explains techlusion's reasoning.

i think going to one of the leaner cat code maps may do it, but i've not had time today.

i could try asking TTS who sold it to me as well.

 

[cookie]

played with CCPs today. no joy on the rich idle but i'm coming to the conclusion it doesn't matter in normal running. i think fergus is right that the sensor needs to be connected to lean the mixture as required. trouble with that is, it will fight the techlusion.

played with the 30/87 link (std. for 1150 i think). leaned it off a bit but not very nice running. hint of surging. didn't like it at all. nasty.

went back to steptoe's 30/87A link (i found it listed as R1100GS non-cat) & it was way better. smoother, more power, nicer noise & less vibes. i dare say it adjusts more than fuelling.

anyone running the still running the stock link & no cat should consider giving it a go IMO.

 

[Deleted account W]

Uncle Steptoe knows best

 

[cookie]

looks that way.

 

[Steptoe]

i've got a couple more settings if you really want to rev the bolloxs off your pride and joy - or fire so much fuel in and raise the revs to 9.5 ( engine life will be down to a few days, but its fun in short bursts )

 

[cookie]

i think i've lost 20 miles off a tank full already

 

[ag1s]

played with CCPs today. no joy on the rich idle but i'm coming to the conclusion it doesn't matter in normal running. i think fergus is right that the sensor needs to be connected to lean the mixture as required. trouble with that is, it will fight the techlusion.

played with the 30/87 link (std. for 1150 i think). leaned it off a bit but not very nice running. hint of surging. didn't like it at all. nasty.

went back to steptoe's 30/87A link (i found it listed as R1100GS non-cat) & it was way better. smoother, more power, nicer noise & less vibes. i dare say it adjusts more than fuelling.

anyone running the still running the stock link & no cat should consider giving it a go IMO.

These are bbp powerchip schematics,
no steptoe-magics

 

[cookie]

pics are indeed from BB instructions for R1100RS/RT. just put them in so ppl would know what i'm talking about with ref: 30/87A etc.

i didn't show the notes as i thought they were probably wrong for an 1150 with a bmw chip & 2.4 motronic.

this is the pin out with BB notes. my testing suggested they are arse about face for my bike which does not have the BB chip.
nowhere on the instructions does it say any of these links work with the original bmw chip.

steptoe said 30/87A works with standard chip, y-piece & aftermarket can & he seems to be right.

i have not seen that config. listed anywhere else for the 1150 though i have seen it as a "no cat" CCP for the 1100.

possibly cheapest & easiest tuning mod i've ever seen

 

[Steptoe]

These are bbp powerchip schematics,
no steptoe-magics

i haven't got a power chip ? -

BB powerchips must have got the information from the same place as me --

no bb powerchip -magics

 

[ag1s]

pics are indeed from BB instructions for R1100RS/RT. just put them in so ppl would know what i'm talking about with ref: 30/87A etc.

i didn't show the notes as i thought they were probably wrong for an 1150 with a bmw chip & 2.4 motronic.

this is the pin out with BB notes. my testing suggested they are arse about face for my bike which does not have the BB chip.
nowhere on the instructions does it say any of these links work with the original bmw chip.

steptoe said 30/87A works with standard chip, y-piece & aftermarket can & he seems to be right.

i have not seen that config. listed anywhere else for the 1150 though i have seen it as a "no cat" CCP for the 1100.

possibly cheapest & easiest tuning mod i've ever seen

That is a very interesting conclusion. It also makes me wonder whether the bb-chip is actually an expensive empty box!

 

[cookie]

update

finally got round to trying it with lambda connected. surprise, surprise CO comes right down again.

been on to TTS who don't seem clued up on this phenomenom despite having "fitted literally hundreds" (what they said when i bought). changed to "not sure, not fitted one of these for over a year" when i ask for tech support.

also emailed techlusion in US who also seem surprised & tried to tell me it runs lean in open loop. er, so why have the oxygen sensor then?

they have suggested resetting the TPC to their spec to lean it off. not very effective. i'ts down to about 7.5%.

 

[cookie]

techlusion tech support are saying that if you disconnect the CO sensor then the ECU defaults to a "3%" map & it is hard to make it go above this figure.

mine certainly doesn't. does anyone have any experience of this?