How much does a GYTR pipe affect it w/o a fuel commander?

[PDX Raptor]

That was not directed at you rather Yamaha and their BS answers. I would be willing to bet any amount of money that if you dyno'd a raptor with Gytr exhaust, and intake it would run lean. I have a dyno tune and the fuel cells were raised considerably over stock settings. Think about it 1) Why does the bike run like crap and pop? 2) Why would you need and after marker controller for other brands and not GYTR? 3) Don't believe everything Yamaha tells you. They are looking out for THEIR best interest not yours. I just don't want this kid to burn up his quad when a $100 used Dobeck would keep his bike safe and increase power.

[kyledvor61]

That was not directed at you rather Yamaha and their BS answers. I would be willing to bet any amount of money that if you dyno'd a raptor with Gytr exhaust, and intake it would run lean. I have a dyno tune and the fuel cells were raised considerably over stock settings. Think about it 1) Why does the bike run like crap and pop? 2) Why would you need and after marker controller for other brands and not GYTR? 3) Don't believe everything Yamaha tells you. They are looking out for THEIR best interest not yours. I just don't want this kid to burn up his quad when a $100 used Dobeck would keep his bike safe and increase power.

the bike is even lean from the factory

[Headrope]

1) I don't want anyone to burn up their quad either. But really, wouldn't any damage done to his motor have already occurred if it has been run for two years without an aftermarket fuel controller as he typed, and the aftermarket controller proponents are correct? And it's possible the popping he is hearing has more to do with him having only run the engine for a couple of minutes.

2) If someone has a stock motor and intake, filter etc. but also has a GYTR slip on please do dyno it. We would have more to go by.

3) Give me some credit. I do believe in Yamaha parts and it's customer support teams. But I'm not a stooge falling for the Yamaha line.

Anyway, as I typed before: It's the great debate. Feel free to argue amongst yourselves and form your own opinions.

[Livingmylife93]

It does not pop and backfire and stuff once its warmed up

[kyledvor61]

It does not pop and backfire and stuff once its warmed up

shoulda got a 450

[Bert]

It does not pop and backfire and stuff once its warmed up

shoulda got a 450

  Its all good & its got reverse

[kyledvor61]

It does not pop and backfire and stuff once its warmed up

shoulda got a 450

  Its all good & its got reverse

whoops i read it wrong, maybe i was reading what i wanted to read.


still shoulda got a 450

[FoundArealQuad]

I think you made the right choice 

[Bert]

I think you made the right choice 

Can't go wrong riding a Yamahauler

[1FST690]

one thing to remember is  elevation will play a role in air/fuel ratio

[preddy08]

one thing to remember is  elevation will play a role in air/fuel ratio

Really, then why do so many argue that the rappy will adjust its self for that? (I'm on your side )

[RaptorRandy]

one thing to remember is  elevation will play a role in air/fuel ratio

Really, then why do so many argue that the rappy will adjust its self for that? (I'm on your side )

The 700R's EFI system with it's air temp & air pressure sensor's can only adjust so much....that's why so many people have no problems with a good tune running fine from sea level to around 7000' After that it simply can not compensate. To expect that would take a more sophisticated system with a mass air flow sensor and an O2 Sensor etc.etc.




Randy

[Colorado700R]

one thing to remember is  elevation will play a role in air/fuel ratio

Really, then why do so many argue that the rappy will adjust its self for that? (I'm on your side )

The 700R's EFI system with it's air temp & air pressure sensor's can only adjust so much....that's why so many people have no problems with a good tune running fine from sea level to around 7000' After that it simply can not compensate. To expect that would take a more sophisticated system with a mass air flow sensor and an O2 Sensor etc.etc.




Randy

I would say up to 12K Randy, I got Plug chops that confirm   

I've run the same map in North Central WI (Wausau area) @ 1,200 ft as I am in the mountains around Beuno Vista, CO (12K).

Aaron

[FoundArealQuad]

Nice.

[RaptorRandy]

one thing to remember is  elevation will play a role in air/fuel ratio

Really, then why do so many argue that the rappy will adjust its self for that? (I'm on your side )

The 700R's EFI system with it's air temp & air pressure sensor's can only adjust so much....that's why so many people have no problems with a good tune running fine from sea level to around 7000' After that it simply can not compensate. To expect that would take a more sophisticated system with a mass air flow sensor and an O2 Sensor etc.etc.




Randy

I would say up to 12K Randy, I got Plug chops that confirm   

I've run the same map in North Central WI (Wausau area) @ 1,200 ft as I am in the mountains around Beuno Vista, CO (12K).

Aaron

There are exceptions to every rule Aaron....I think 12K would be about the absolute limit for the 700R's EFI system.
Is your map at all lean at Sea level or your normal riding alltitude?