Advice on full Arrow Exhaust

[pooh and xtine]

Spellcheck eh? I sense a lambada here

The o2 sensors are just for emissions regs and don’t help performance or rideability at all, in fact they make it worse! Better to get a proper fuel map and shut off closed loop (and lambda o2 sensors). Most tuners agree that the ignition tables on the ST are ok, and just need about 3% more fuel at low revs and 8-10% less fuel towards wide open throttle.

 

[Chaz]

Just went to stock headers today. Went to work with the Arrow this morning(as usual) and test drive the bike after I removed the Arrow .
Engine feels much smooth. Sure it don’t rev as fast but feels smoother than with the headers. Less vibes, on and off throttle are less brutal too.
I have check with a light in the exhaust portin the engine head and can definitively see whitish powder inside...
Same day , same condition- engine runs cooler by 2-3 deg celsius.
For now, can’t afford a flash-tune-dyno or melted spark tip ...

 

[MattR]

MattR Why do you disconnect the Lambada sensors. Aren't they essential for the ecu fueling.

I get the fuel maps set precisely during the Dyno runs so that the map is specific to my engine. If I left the lambdas connected they would constantly be trying to adjust the map back to yamahas original settings which as we know is not ideal due to emissions regulations.


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[MattR]

Just fitted the Arrow can to my arrow headers. Everything else is stock but I’m booked in for a Dyno ecu flash at the end of the month. I’ll be keeping the DB killer in as this is my work commuter bike used on 5:30 am shift starts. I’m going to get her tuned for extra grunt low down and not so worried about top end ( if I want to go fast I’ll take my other bike). Once that is done I’ll be taking her to MCT for a full suspension tune looking for maximum comfort. This is why I keep my bikes. I spend so much time and money getting them just the way I like them that it seem silly to sell them and start again.


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[Tenman]

Just fitted the Arrow can to my arrow headers. Everything else is stock but I’m booked in for a Dyno ecu flash at the end of the month. I’ll be keeping the DB killer in as this is my work commuter bike used on 5:30 am shift starts. I’m going to get her tuned for extra grunt low down and not so worried about top end ( if I want to go fast I’ll take my other bike). Once that is done I’ll be taking her to MCT for a full suspension tune looking for maximum comfort. This is why I keep my bikes. I spend so much time and money getting them just the way I like them that it seem silly to sell them and start again.


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Me too. You just got to pick the right bikes. I've had a few back in the day that I made a hasty call on. They didn't last long.

 

[fac191]

Just fitted the Arrow can to my arrow headers. Everything else is stock but I’m booked in for a Dyno ecu flash at the end of the month. I’ll be keeping the DB killer in as this is my work commuter bike used on 5:30 am shift starts. I’m going to get her tuned for extra grunt low down and not so worried about top end ( if I want to go fast I’ll take my other bike). Once that is done I’ll be taking her to MCT for a full suspension tune looking for maximum comfort. This is why I keep my bikes. I spend so much time and money getting them just the way I like them that it seem silly to sell them and start again.


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Have you got an ES or normal S10. Would be interested to hear if Darren can service the ES suspension. Top firm MCT did my 800 Tiger.

 

[MattR]

Mines a normal S10 for that very reason. But I’ll ask him when I’m there.


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[fac191]

Mines a normal S10 for that very reason. But I’ll ask him when I’m there.


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Thanks.