DNA Stage 2 and Lambda sensor - .: XT660.com

Mototrick · # 1 30-09-09, 10:04

Hi all

My 2009 XTX has now passed the 600 mile mark and been throught it's expensive 'free' first service. So as soon as I got her back home I started adding the mods i'd been hoarding over the last few weeks. She now sports a loud and light set of Leovince cans, a DNA stage 2 filter and one of WB's tail tidys. Now my limited technical knowledge suggests that with the cans and air filter installed the bike will suck in and blow out more air, thus making her run leaner than stock. Will the lambda sensor adjust this automatically?

I think it will, but don't fancy having to replace pistons and valves if it doesn't! There is no money left on the kitty for other mods just at the moment.

Lee

dazmatic · # 2 30-09-09, 11:56

Quote:

Originally Posted by Mototrick

Hi all

My 2009 XTX has now passed the 600 mile mark and been throught it's expensive 'free' first service. So as soon as I got her back home I started adding the mods i'd been hoarding over the last few weeks. She now sports a loud and light set of Leovince cans, a DNA stage 2 filter and one of WB's tail tidys. Now my limited technical knowledge suggests that with the cans and air filter installed the bike will suck in and blow out more air, thus making her run leaner than stock. Will the lambda sensor adjust this automatically?

I think it will, but don't fancy having to replace pistons and valves if it doesn't! There is no money left on the kitty for other mods just at the moment.

Lee

Congrats!

Well, your not far wrong! Your bike will indeed suck and blow more. The lambda sensor is a thin band sensor, in that it will only detect and adjust to a certain amount. However! It will still only run adjust to the standard XT fuel map which is lean anyway for emission purposes.

A fuel mod would be ideal to help richen the circuit up a tad.

Ultimately, a PCV and auto tune will sort it right out.

I shall purchase an autotune myself in the next few months

Kev · # 3 30-09-09, 12:17

(QUOTE)

My 2009 XTX has now passed the 600 mile mark and been throught it's expensive 'free' first service. So as soon as I got her back home I started adding the mods i'd been hoarding over the last few weeks. She now sports a loud and light set of Leovince cans, a DNA stage 2 filter and one of WB's tail tidys. Now my limited technical knowledge suggests that with the cans and air filter installed the bike will suck in and blow out more air True, thus making her run leaner than stock true. Will the lambda sensor adjust this automatically? No it won't, the O2 sensor is a emission control device not a tuning device. The O2 sensor will run the A/F ratio at 14.7:1 in the closed loop ciruit, you need around the 13:1 to get good fuel consumption & HP for your mods.

I think it will, but don't fancy having to replace pistons and valves if it doesn't! We have no reported damage from this set up on any XT over the past 4 years but this set up does run lean. It is best to fit a Power Commander with a custom fuel map made on a dyno There is no money left on the kitty for other mods just at the moment. May be look at a cheap fuel mod.

PCV with AUTO tune. http://www.morepoweracing.com/l97xvp...4-26977-45185/
Power Commander III . http://www.powercommander.com/powerc...b/default.aspx
Power Commander V http://www.motorcycle-exhausts.co.uk...oducts_id=8562
Rapid Bike. http://rapidbike.dimsport.com/infoprodotto.php?DS=f585e9b5da35e34fc55c5b1c8df558 4c&lang=it
SFI control. http://www.staintune.com.au/sfi_yamaha_xtx660.htm
Dynateck FI Controler. http://www.off-the-road.de/xt660_xt-power.html?&L=1
Remus Powerixer. http://www.remus.at/powerizer/
http://www.britnett-carver.co.uk/tro...prods/277.html
Kev Fuel Mod. http://search.ebay.com.au/xt660x_W0QQfromZR40 > http://www.xt660.com/site/node/136 Made to order for all year & model XT660X/R/Z
G.P.R. http://www.gpr.it/prodotti.php?id=14

Mototrick · # 4 30-09-09, 12:59

Quote:

Originally Posted by Kev

(QUOTE)

My 2009 XTX has now passed the 600 mile mark and been throught it's expensive 'free' first service. So as soon as I got her back home I started adding the mods i'd been hoarding over the last few weeks. She now sports a loud and light set of Leovince cans, a DNA stage 2 filter and one of WB's tail tidys. Now my limited technical knowledge suggests that with the cans and air filter installed the bike will suck in and blow out more air True, thus making her run leaner than stock true. Will the lambda sensor adjust this automatically? No it won't, the O2 sensor is a emission control device not a tuning device. The O2 sensor will run the A/F ratio at 14.7:1 in the closed loop ciruit, you need around the 13:1 to get good fuel consumption & HP for your mods.

I think it will, but don't fancy having to replace pistons and valves if it doesn't! We have no reported damage from this set up on any XT over the past 4 years but this set up does run lean. It is best to fit a Power Commander with a custom fuel map made on a dyno There is no money left on the kitty for other mods just at the moment. May be look at a cheap fuel mod.

PCV with AUTO tune. http://www.morepoweracing.com/l97xvp...4-26977-45185/
Power Commander III . http://www.powercommander.com/powerc...b/default.aspx
Power Commander V http://www.motorcycle-exhausts.co.uk...oducts_id=8562
Rapid Bike. http://rapidbike.dimsport.com/infoprodotto.php?DS=f585e9b5da35e34fc55c5b1c8df558 4c&lang=it
SFI control. http://www.staintune.com.au/sfi_yamaha_xtx660.htm
Dynateck FI Controler. http://www.off-the-road.de/xt660_xt-power.html?&L=1
Remus Powerixer. http://www.remus.at/powerizer/
http://www.britnett-carver.co.uk/tro...prods/277.html
Kev Fuel Mod. http://search.ebay.com.au/xt660x_W0QQfromZR40 > http://www.xt660.com/site/node/136 Made to order for all year & model XT660X/R/Z
G.P.R. http://www.gpr.it/prodotti.php?id=14

Hmm ok...there's food for thought. I think I might try Kevs fuel mod first. All the others are a tad expensive right now.

Lee

Mototrick · # 5 30-09-09, 15:43

Kev, I have a couple of questions that I think you can answer....please

1) In relation to the discussion above, would changing my CO1 setting via the dash not globally increase the richness of the mixture?

2) Is one of these the same as your fuel mod? http://cgi.ebay.co.uk/NITRO-X-FUEL-C...4.c0.m14.l1262 i.e it alters the readings from the temp sensor?

3) If I was to find a PC111 cheap enough, could that be used while the o2 sensor is still in place in the closed loop system? Or would I have to buy an o2 eliminator too?

and finally..

4) On your fuel mod, you list a 0-1k resistor, do you use the full range of that pot? I only ask as I have a few 500 ohm pots here at work. But no 1k's at the moment.

Thanks

Lee

Kev · # 6 30-09-09, 23:46

[quote=Mototrick;106901]Kev, I have a couple of questions that I think you can answer....please

1) In relation to the discussion above, would changing my CO1 setting via the dash not globally increase the richness of the mixture? No it does not once the TPS reaches 18 it runs on a fuel m ap

2) Is one of these the same as your fuel mod? http://cgi.ebay.co.uk/NITRO-X-FUEL-C...4.c0.m14.l1262 i.e it alters the readings from the temp sensor? Works on a similar principal.

3) If I was to find a PC111 cheap enough, could that be used while the o2 sensor is still in place in the closed loop system? Or would I have to buy an o2 eliminator too? You would need a O2 eliminator as well.

and finally..

4) On your fuel mod, you list a 0-1k resistor, do you use the full range of that pot? I only ask as I have a few 500 ohm pots here at work. But no 1k's at the moment. You need a 1k resistor, in the colder climates you will need the 1K resistance to get the temp reading to alter. The coolant temp sender is a NTC switch meaning the cold the temp the higher the resistance.

Thanks

Lee

Mototrick · # 7 01-10-09, 09:39

[quote=Kev;106970]

Quote:

Originally Posted by Mototrick

Kev, I have a couple of questions that I think you can answer....please

1) In relation to the discussion above, would changing my CO1 setting via the dash not globally increase the richness of the mixture? No it does not once the TPS reaches 18 it runs on a fuel m ap

2) Is one of these the same as your fuel mod? http://cgi.ebay.co.uk/NITRO-X-FUEL-C...4.c0.m14.l1262 i.e it alters the readings from the temp sensor? Works on a similar principal.

3) If I was to find a PC111 cheap enough, could that be used while the o2 sensor is still in place in the closed loop system? Or would I have to buy an o2 eliminator too? You would need a O2 eliminator as well.

and finally..

4) On your fuel mod, you list a 0-1k resistor, do you use the full range of that pot? I only ask as I have a few 500 ohm pots here at work. But no 1k's at the moment. You need a 1k resistor, in the colder climates you will need the 1K resistance to get the temp reading to alter. The coolant temp sender is a NTC switch meaning the cold the temp the higher the resistance.

Thanks

Lee

Thanks Kev

That clears a lot of things up for me,

Lee

harpy · # 8 30-09-09, 17:10

Hi

Quick question for kev

If you fitted a power commander V and the auto tune does the O2 sensor replace the orignal one fitted in the header or do you have to weld a fitting else where on the exhaust system??

I only ask because if you unplugged the orignal O2 sensor would it cause a engine light fault??

Or do you then have to fit dynojets O2 eliminator??

Thanks

Gary

Kev · # 9 30-09-09, 23:38

Quick question for kev

If you fitted a power commander V and the auto tune does the O2 sensor replace the orignal one fitted in the header or do you have to weld a fitting else where on the exhaust system?? You fit a O2 Eliminator & remove the O2 sensor. The O2 senors is no longer used, with the PCV & Auto tune.

I only ask because if you unplugged the orignal O2 sensor would it cause a engine light fault?? Thats why you need a O2 Eliminator.

Or do you then have to fit dynojets O2 eliminator??

Thanks

Gary[/quote]

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