312 replies to this topic

[hallrob1]

Just re-done the mod (The dealer had "reversed" it at the last service) and I'd forgotten what a difference it makes, just one question - I've sealed off the pipe under the tank but should I also seal off the opening to the metal cap it connects to?

[vicens66]

Just re-done the mod (The dealer had "reversed" it at the last service) and I'd forgotten what a difference it makes, just one question - I've sealed off the pipe under the tank but should I also seal off the opening to the metal cap it connects to?

No need to seal the pipe at each end.once its enough

[gpwheels]

Just an update on my experience:

I also enriched both cylinders about 10 points through the "CO Mode", adjusted the slack out of the throttle cable, and tweaked the clutch lever (for ease of use), all this made for a much improved experience.

Excuse my ignorance, but how do you get the CO Mode and is that what everyone uses to check their CO settings/make adjustments?

[AzzA]

Excuse my ignorance, but how do you get the CO Mode and is that what everyone uses to check their CO settings/make adjustments?

G'day,

your ignorance is excused, because you have already sought remedy.

Follow this link to JBX's site, it's all laid out there, you might have to click a few times though... his host service is a bit slow at times, but the information is worth the effort. (It's under the "DOCUMENTS" menu if you don't get connected straight away... you may even need to register, which is free and SPAM free too.)

There's no scientific/engineering method of testing; it's just what works for you and your bike. Aim for smooth take-off's and low (crawling) speed handling, without hesitancy on acceleration. You will know what's right and wrong; you'll feel it.

Since my last post I have found, a others have concurred, that plus 20-ish CO points (to your original settings) are the most beneficial. (NOTE: This has been for after-market or modified stock exhausts, so it may be less for stock due to less flow.)

Cheers,
AzzA

[gpwheels]

G'day,

your ignorance is excused, because you have already sought remedy.

Follow this link to JBX's site, it's all laid out there, you might have to click a few times though... his host service is a bit slow at times, but the information is worth the effort. (It's under the "DOCUMENTS" menu if you don't get connected straight away... you may even need to register, which is free and SPAM free too.)

There's no scientific/engineering method of testing; it's just what works for you and your bike. Aim for smooth take-off's and low (crawling) speed handling, without hesitancy on acceleration. You will know what's right and wrong; you'll feel it.

Since my last post I have found, a others have concurred, that plus 20-ish CO points (to your original settings) are the most beneficial. (NOTE: This has been for after-market or modified stock exhausts, so it may be less for stock due to less flow.)

Cheers,
AzzA

Thanks for the reply Azza,

have been to JBX's site and printed the necersary docs.

[ibi]

Hello boys and girls,am new to this forum and i live in Australia.I own the 07 model and did the mod.1 what made a difference in low revs now am bit confused after reading some topics here about the CO mode.Hopefully someone can help,Why does some set up C1 on 16 an C2 on 20,does it make a difference,can someone explain bit more about the C0 mode and why do we need to adjust it.I have staintune aftermarket pipes on the TDm.Thanks boys

[ibi]

Just checked my CO mode settings and its shown as C1 14 & C2 16.I have aftermarket pipes on my bike and one thing is anoing me BACKFIRING now am thinking if i change the settings of the CO will there be some changes to backfiring?CAn someone help me regards to this issue?Thanks

[AzzA]

...
,Why does some set up C1 on 16 an C2 on 20,does it make a difference,can someone explain bit more about the C0 mode and why do we need to adjust it.I have staintune aftermarket pipes on the TDm.Thanks boys

G'day and welcome to Carpe,

The CO settings are originally tuned in the factory, to make even any manufacturing variations. One bike might arrive for sale with C1=16 & C2=20, another with 12 & 5, another with -5 & 2, mine turned up with 8 & 8. Think of it as the "CO Lotto".

Generally you will want to keep the two cylinders even, so if you raise C1 by 5 points you should raise C2 by 5 also.

You would only want to change the CO balance when you rebalance the throttle bodies, or you were trying to compensate for a hot running cylinder etc... basically, just keep the balance your bike came new with unless you're doing a proper service with the proper instrumentation.

Cheers,
AzzA

Edit:
PS you will, most likely, need to adjust your idle speed to compensate for the change of mixture.

Edited by AzzA, 16 November 2009 - 11:19 am.

[ibi]

Since i changed the Co mode to C1 30 & C2 32 i noticed i big change to my bike how its running.These no backfiring to the aftermarket exhaust and am really happy the way how it runs.I also did the airbox mode mod(JBX).Thanks to all who gave me some advise

[Mikey B]

Did mod #1 this week, Monday. Didnt ride the bike until today.
What a difference, bike didn't feel lumpy as if it was in the wrong gear and the roll on pick up was improved. Wished I had done this mod when I first bought the bike.

A big thanks to JBX for the mod and his easy to follow instructions.

[SeanW]

I just I'd add my four penneth to this topic. I bought an 03 TDM at the beginning of the year and was very disappointed by the low speed engine performance - very jerky. I read the forums in here and took it to Parkroad Superbikes in Southampton. They pointed it out that it hadn't received the TPS mod which they did FOC as part of a service. the performance was much improved but still not perfect. I then read on and discovered the air box mod. I have taken the hose off the top of the air box and blocked it up - at last a silky smooth ride.

PS - I enjoy it so much that I have bought a new TDM - (and that has benefited from the airbox mod as well)

In sum - a big thanks to the Carpe Forum - extremely useful advice!
Sean

Edited by SeanW, 31 May 2010 - 03:18 pm.

[td or sv? That is the question.]

So you can get something for nothing! Just to add my thanks to JBX - the air-box mod fixes 90% of the snatching issues on my 2005 bike. I must check with Yamaha that the TPS has been changed, if affected. Can any dealer advise on this after all this time?

Now for the screen....

[val]

Had my '05 TDM for a month and just done the air-box mod - wow makes quite a difference. Sooooo much smoother for traffic and can just put around between 2-3K without any hassles. Cheers for the tip.

Now got to find out if the TPS has been done. I couldn't see anything noted in the service book - is there a sticker to look for or is it a case of take it to the dealer?

[catsbum]

Re-did mine today, agreed. Way smoother at low revs

[Baron]

The low speed throttle response is also improved by rebalancing the throttle bodies though this is obviously a bit more involved than the air box mod.

[val]

Day 3 since doing the mod and all is well.

It seems to have improved the already excellent fuel efficiency as well. I still had 4 bars showing at 200km. Usually The bike drops to 3 bars at around the 180km. This may be due to being able to putt around at lower revs...?

Also found out by ringing Yamaha Australia directly that my particular bike hasn't had its TPS changed, despite several stamped Yamaha dealer servicing since the recall was issued in 2006.

They also mentioned that if the recall work has been done, there will be a sticker under the seat area with the date and recall number written on it. I will take a photo of it after mine gets done shortly. Not sure if this applies for other countries or not.

[maldac]

did mine last night and what a difference it makes, my bike had a misfire at 3k which is all gone and it is much nicer to ride pulling away ay low revs . Happy oh so happy

[NZTDMGUY]

I am not sure if this is the right spot to post this but a mod can move it if required.

I have only had the bike for 450 kms so cannot accurately judge changes yet, but I did the airbox mod yesterday, disconnected the rubber tube at the top of the airbox and blocked it off, but immediately afterwards, dropped my wife's Raptor off the sidestand and tore a hamstring muscle catching it. No damage to the Raptor

My question/comment is, when I cleaned the bike and had a wee play with it, I removed the baffles in the Scorpion exhausts and was amazed at the amount of soot. That would mean that the bike is running very rich, in my opinion, but it has a Power Commander fitted. I have no idea of the mapping in the PC and even if I did I think I would be stuck.

Is it possible to still modify the ECU through the dash to lean the mixture even though there is a PC in the loop? Is the soot an indication of richness or just soot?

Any comments are appreciated.

Cheers

[xs2jammu]

Why, why didn´t I it earlier. Anyway now it´s done and I love it how it works now, perfect.