Are they Bringing the 250R back OUT

[tecateboy]

so wouldnt that change the jetting so it runs at the correct mixture?

[370banshee]

well not jetting but fuel injector pulse.....

[tecateboy]

i c, but you would think it would set the amount of gas right since thats what is used in cars to get the right mix. but i dont know, this is just what im thinking

[fiveOnick]

Originally Posted by gh500

a well tuned carb will out run FI ! I've seen & proved it on dyno's the only advantage to EFI is it can tune it self once setup & on large motors when you cant flow enough fuel through a carb I.E. alcohol or nitromethane & atomize it properly but then you run mechanical fuel injection & you have to know how to tune it ! (if you cant tune a carb i guess you need to ride a 4 poke)

Funny, I have seen the opposite proved on a dyno with two stroke engines. GP Racing has posted dyno sheets with EFI, E Powerjet Kehiens, and Regular Kehiens. The FI made the most power and was the smoothest of all three setups.

[gh500]

did you tune the carb & efi ? or is it they are pushing efi ? or does it come back to you cant flow enough fuel in the carbs so obviously the efi would come out on top
but i've yet to see a quad make near the hp per cc a gp bike does

[fiveOnick]

Originally Posted by gh500

did you tune the carb & efi ? or is it they are pushing efi ? or does it come back to you cant flow enough fuel in the carbs so obviously the efi would come out on top
but i've yet to see a quad make near the hp per cc a gp bike does

I didnt tune it, Kevin did. Obviously he is a very good tuner on the dyno so I would trust whatever outcome he came up with. I do agree that a carb on a high hp car motor usually will make more if tuned correctly but it doesnt make the same band. Im just stating on all of his comparison findings the EFI came out on top, and the Electric carb came out on top of the standard too. You can claim they are undersized or whatever you want but I read what was posted. The difference wasnt very large though.

[370banshee]

ah gh500 and nick arguing... this should be good.....

[fiveOnick]

Isnt this the same guy who said the Doc's pipe wasnt as good as the other production pipes on his dyno. HHmmmm, not what everyone else said.

[91LT250R]

Originally Posted by 370banshee

well carbs are never perfectly tuned..... btu then agian niether is FI... the reason is humidity..... humidity changes so much that you couldn't possibly jet each time it changes.... and EFI doesn't figure for things like humidity..... it gets it's info from a MAP sensor or a MAF sensor, tps, and a couple other sensors in car applications at least.. not sure how the quad stuff works quite yet...... i'm not in a hurry to find out either

FI is gonna get as perfect as humanly possible.

And I also don't buy that BS that carbs are proven to make more power than FI on dynos. FI makes more power because it can stay as close to perfectly tuned as possible. Plus, this makes FI more fuel efficient which is never a bad thing.

[370banshee]

Originally Posted by fiveOnick

Isnt this the same guy who said the Doc's pipe wasnt as good as the other production pipes on his dyno. HHmmmm, not what everyone else said.

same guy..... but dr Q didn't exactly do himself any favors talking the way he did around here.... good pipe or not the guy is very cocky......