22 replies to this topic

[Geordie Guy]

Went to mellenium Motors St Helens today.

Met up with the bloke who bought Peter Kelly's old bike, did not catch his name but he has been on Carpe and said that our set up instructions for the CO2 was pants.

He works for BMW and set the CO2 levels with a sensor from the exhaust.

The up shot is we went over to my bike and reduced the CO2 settings from C1 =16 C2 = 14

so that they were both -22 .......... - 22 !!!!!!!

He said that it would be smoother and have more power.

I was doing 80 mph on the way home in 6th, turned the throttle and the pick up was imediate, tonnes more.

Put it in the garge and it sounds like a race tuned engine when you rev it now.

Fook me , he was right.

Edited by Geordie Guy, 28 February 2010 - 02:44 pm.

[muddy]

Went to mellenium Motors St Helens today.

Met up with the bloke who bought Peter Kelly's old bike, did not catch his name but he has been on Carpe and said that our set up instructions for the CO2 was pants.

He works for BMW and set the CO2 levels with a sensor from the exhaust.

The up shot is we went over to my bike and reduced the CO2 settings from C1 =16 C2 = 14

so that they were both -22 .......... - 22 !!!!!!!

He said that it would be smoother and have more power.

I was doing 80 mph on the way home in 6th, turned the throttle and the pick up was imediate, tonnes more.

Put it in the garge and it sounds like a race tuned engine when you rev it now.

Fook me , he was right.

Did he give you an explanation as to why he set it so lean Ivan? Your old setting are more or less what mine are now, so I could try it myself just to see.

[Geordie Guy]

Did he give you an explanation as to why he set it so lean Ivan? Your old setting are more or less what mine are now, so I could try it myself just to see.

He did Muddy, a lot of it went over my head.

He was talking about something being 1% and getting it down to 0.5%, and the mixture having more oxygen so you have a leaner burn. Which is more efficient at higher revs.

God knows what it all meant ?

[dapleb]

it sounds like a race tuned engine when you rev it now.

[Geordie Guy]

Did he do this with the meter or was it just an arbitrary figure he chose from experience?

He did his on a meter.

[Geordie Guy]

Just read this

on a thread from 2007, think I need to get this checked professionaly.

2007 thread on CO2 settings

Hello,

When I read this and see that some CO settings for the Cilinders C1 ( left cilinder) and C2 ( right cilinder) are the same, it worrys me a bit.

I've ended with C1-23 and C2=31. My conclusion, so far, is that the machine runs smoother between 3 and 4000rpm and has a little bit more "Kick" in the 6th gear when speeding up.
Also the consumption of the liquid gold is speeding up
So, for whats its worth: It can bring al little bit more smoothness to your bike. But remember: These settings work for my bike and are not the same for other bikes!.

Harrrumpie

[Geordie Guy]

Don't forget, you need to blank off the air valve when taking the meter readings/adjusting.

Yep, Trevini,

just been reading some of your past posts on the subject.

Will get it to a MOT centre and have it done correctly.

3-4% . Might have just hit luck with the settings.

This has just reminded me there is no one correct setting and that each bike is different.

Cheers, Ivan

[JBX]

Early TDM900 models have outlets on the exhaust pipes to plug in the CO meter sampling probes.
This is not the case on models since 2004 I guess - correct me if I'm wrong.

According to the workshop manual, if you have access to the exhaust pipes (2002 or 2003 models) you may check the CO setting with the air-induction system not working - CO level is 3-4% then.

If you don't have access to the exhaust pipes but only to the muffler output, then the CO setting is done with the air-induction system working - CO level is 1% then.

[Geordie Guy]

If you don't have access to the exhaust pipes but only to the muffler output, then the CO setting is done with the air-induction system working - CO level is 1% then.

Thanks JBX,

that coresponds to what he was say about 1% and getting it down to 0.5%.

Cheers, Ivan

[muddy]

Thanks JBX,

that coresponds to what he was say about 1% and getting it down to 0.5%.

Cheers, Ivan

Does that mean he reconnected your induction flap when sampling your co output or are we talking about something else? I'm getting lost here.

Edited by muddy, 01 March 2010 - 08:34 pm.

[JBX]

Edited by JBX, 01 March 2010 - 10:41 pm.

[muddy]

@trevini & JBX
Cheers, that's nicely cleared up and another piece of the TDM jigsaw puzzle in place.

[dandywarhol]

Unless you have non standard cans, in which case just stick the probe down the end and set to 3-4%.

Remember there's a balance pipe on the system and the test plugs on the earlier system takes the exhaust sample BEFORE the balance pipe. Sticking a CO probe down the straight through cans won't go past the balance pipe...........

[Jez]

Remember there's a balance pipe on the system and the test plugs on the earlier system takes the exhaust sample BEFORE the balance pipe. Sticking a CO probe down the straight through cans won't go past the balance pipe...........

I am under the understanding that the most accurate way to test is to drill the headers on the vertical part to accomodate sensors as the balance pipe makes it difficult to differentiate between left and right cylinders.

I am not brave enough to do this so my mate who owns a dyno adjusted the settings by ear and the dyno now shows 1bhp improvement but, more importantly, the revs top out 1 second quicker in top gear. No more stuttering on pullaway too .

This is with the air box mod and the CO settings were reduced by 10 on both sides. Don't know what the actual CO percentages are.