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CO2 settings TB synch, Spoonz/ sabre!

R

r896neo

Joined Jul 2008
167 Posts | 0+
Belfast
Goint to get my TB's balenced on the EGA tomo morning. I have a Gabro chip for evo airbox and RSV ti EVO can and with ignition advancer.

I read a post you guys did recently about sabres bike i think with similar mods and chip and a figure of 3-3.5% rather than 1%.

What exactly does that refer to? Percentage of what? Don't know the guy i'm going to but he is highly recommended and does mv's and ducati and other diagnostic and dyno work etc.

Just want to know what to tell him to set it to rather than the factory recommended 1% which seemed to not work well on sabre's bike.

Bike is an 03 by the way.

Thanks
 
r896neo said:
Goint to get my TB's balenced on the EGA tomo morning. I have a Gabro chip for evo airbox and RSV ti EVO can and with ignition advancer.

I read a post you guys did recently about sabres bike i think with similar mods and chip and a figure of 3-3.5% rather than 1%.

What exactly does that refer to? Percentage of what? Don't know the guy i'm going to but he is highly recommended and does mv's and ducati and other diagnostic and dyno work etc.

Just want to know what to tell him to set it to rather than the factory recommended 1% which seemed to not work well on sabre's bike.

Bike is an 03 by the way.

Thanks
Click to expand...


Hi Mate,

What is meant by 3 - 3.5% CO is the content of carbon monoxide in the exhaust gases.

If the guy doing your work is working on Ducati's etc... and uses a Dyno then he will fully understand what you mean in regards to CO settings. If your putting it on the Dyno then he will find the best settings for maximum output BHP and torque wise.

Would be worth mentioning all the mods you have done to the bike, it'll give him an idea on what to do first in regards to setting it all up.

Good luck, hope it improves your BHP/torque.

Let us know what your outputs are before and after the Dyno runs.

Alan
 
cheers, it's more for reliability and smooth fueling than power gains as its my daily commute. Was forced into it by my RSV ti eprom malfunctioning and therefore i had to get a replacement and got one of gabro's 2nd hand.

So won't be putting on the dyno unless its free or pretty cheap. It will however save me a few quid every fill-up as i'm only getting 85-90 miles until the reserve light at the minute.

Thanks for your info.
 
LOL, I only get that kind of fuel consumption anyhow, will be good to hear if you get any more out of it.

Perhaps I have a fuel leak?

Or just a damn right wrist that keeps on twisting that throttle.
 
Im gonna sound daft now, but why is the co figure important and why/how do you alter it balancing the throttle bodies?
I've only ever had bikes with carbs and I just balance them all to the same vac reading. I was going to do the mille when I get chance as it is hunting, but I was just going to set the vac correctly
 
On the rsv and other fuel injection systems the gas mix in the exhaust takes precidence over the balancing of the throttle bodies by vacuum.

I'm guessing here but the CO output reading probably represents the amount of burnt fuel and so you can see if its running rich or lean and also balance the cylinders to be matched. Because the fuel input (via injector opening times and amount) is decided by the ECU and not solely by the vacuum force as it is in a carburettor you have to balance fuel/ratio by gas output not just Vac readings.

The previous paragraph is pure conjecture! :dunno
 
i spoke with Gabro and he recommended 3.5 front cylinder and 4% rear.

Purely because the rear cylinder runs slightly hotter than the front and having it a bit richer reduces it's temp. In practice it does indeed cos i tried it.

But

The bike is actually smoother with both matched to 3.5% confirmed by myself and Sabre.
The only negative side to this is the bike runs a few degree hotter in traffic so if your a frequent town rider you might be best to go the top route.

regards vac etc pretty much if your co is right your vac with be pretty darn close and probably vice versa.

Post 04 bikes you will be lucky to get below 3.5 - 4% (Aprilia spec 2 -4 % on map 2) because the amount of co in total is out of your control and done by the sensors on the bike. You can merely match the 2 cylinders for an even burn. If the co is matched the vac stagger will be right assuming you have no leaks.
 
Thank you for your findings with % settings adjusments spoonz, all A1 information, greatly appreciated :thumbup
 
As usual Spoony is spot on. We tried to set my bike to 1% as recommended by Aprilia and the engine was surging - like it would with a lean mixture on a Carb. Once we put it to 3.5% it was so much better! Let us know how you get on.
 
r896neo said:
So won't be putting on the dyno unless its free or pretty cheap. It will however save me a few quid every fill-up as i'm only getting 85-90 miles until the reserve light at the minute.

.
Click to expand...

Either you need to stop using the throttle like a switch:devious or your co2 is WAY out. Pribably the latter.:pirate
 
thanks y'all! Got it done and it was straight-forward and cheap! Pissed on me both on the way there and worse on the way home but been out a bit since and its much better at low revs and doesn't surge when on fast idle.

The guy had mentioned 1% was an emissions thing and was going to set it around 2- 2.5% before i mentioned it but Spoonz and Sabre, Cheers!!:thumbup
 
hey to all where did you get hold of the gabro chip went through a world of stuff on the racing website couldnt find it or gabro any help much appreciated
 
Tell him what you run airbox/exhaust/year and he will knock one up for you. Highly recommended.
 
thanks will take another look probably cant see the wood for the trees happens when browsing instead of working:)
 
thanks are all his chip unit specific? there any more on that supercharger kit that vr-8 was developing cant anything else on it more recent than marchh this year....
 
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