B L U E wrote:
I have to also agree with Rich {TampaSVT} on this one, Less is Best, I removed my AIS with NO POWER COMANDER in 2009, and Never looked back since, This freakin bike runs like a well oiled machine

Oh BTW, thanks Rich, for AIS advice you gave me back in 2009, it worked like a charm...

BLUE:
That bike is looking awesome, brotha.


River:
I wasn't offended. I was being serious. You guys understand this in much more detail than I do. If I took it down the rabbit hole this time, my apologies. It's a personal pet peeve of mine to fix things that aren't broken... The "why" relates to what the fuel processor fixes/improves. Nobody ever invests the time or $ to prove any of it.

With a limited understanding, I'm stuck with the option of simply checking my plugs every 1000 miles to see how my bike is running. So far, everything looks just fine, regardless of the AIS removal, aftermarket pipes and aftermarket intake.

I still think it's interesting when this subject does come up, we look for that "one guy" that is running a fuel processor successfully... One out of a hundred?

Happy New Year!


Rich

River wrote:
I took those results down. I agree.
I should have said the AFR results. Without the catalyst you won't be able to achieve the high CO2 and the zero HC and CO results.

Rich, If I ever get the opportunity I'll check things before and after and post the results. Doubtful though since we're a small shop and don't get that kind of work very often.

I'd even check it for someone if they were going to do their own work.

Rich buddy, it's a freaking mess. They shut off the intake and the exhaust to where it won't breath, then they shoot in a richer mixture to make it run, after that they put a cat on it to burn all the unburned fuel you are snorting out your tail pipe. All this to keep the epa off their backs. It is a lot more technical than that, but is kind of what happens, the left hand is fighting with the right hand.

Racers struggle to get the curve toward the upper lean all the time, that sweet spot where it is neither too rich or too lean.

Probably the reason why these bikes run well after taking off the mufflers, the AIS and the choked chicken intake is because the curve approaches the upper lean portion, but doesn't turn over into the too lean portion.

I may be all wrong, but its my take on the whole shmere. The bike is happy, we're all happy as sex maniacs in a cat house.

River wrote:
The bike is happy, we're all happy as sex maniacs in a cat house.

Now, that we're in total agreement on!!

Rich

River wrote:
Blue, how many miles have you put on the bike since you took it off in 2009?

River, Not very many miles, maybe 2500-3,000...Changed Jobs in 2010 and I was on limited riding time

River wrote:
One guy says, "It does not allow adjustments in areas I don't care about, Like 50% throttle or less and below a certain rpm range."

Well..if this thing won't allow adjustments in the 50% throttle range I don't understand what the hell good it is to spend that kind of money on? What do you care about 50% throttle or less for? If you need more power at 50% just turn the grip a little more. I stand by what I said. I you really want more horse power yank off the fuel injection and put TWO Carbs on it. Port and polish the heads and intake. High compression pistons. Or go with a supercharger, then one large carb would be enough. I got my power commander for $175.00 new in the box from ebay. It does work and works well. I guess I got lucky and got mine set up right the first time. I changed the air intake and did the stock computer reset and it seemed to have lost a little. Changed the pipes reset and lost a little more. Put in the power commander and regained all that I lost and picked up some more.

What do I care about 50% throttle or less? if removing the AIS causes the bike to go lean in loop mode, and your doodad you got off e-bay won't allow adjustment in loop mode, then the bike has not been affected one iota to cause the bike to run as it originally did with the AIS on.

River, I believe the loop mode adjustments that can't be changed are there to ensure the unit is street legal. Even though those areas can't be adjusted they should ensure proper mixture ratios with the AIS removed which is something the stock unit doesn't do. Before purchasing one I would talk directly to the folks who make the Power Comander.

If Yamaha were to allow the stock unit to readjust for proper AFR with the AIS removed then it would never get past EPA testing. They are limited to producing a unit that passes when in the stock configuration.

I don't know what everybody else has been talking about, but the reason I have been interested in what Scott has to say is because of a possible lean condition induced by removing the AIS that has at least a chance of causing early valve and piston failure and I'm talking in the range of several thousand miles.

I've yet to see a post from anyone that has put thirty thousand on a fuel injected bike with the AIS removed.

From what everybody says on their plug readings (and I have no doubt they know how to at least read a plug)I am not convinced that removing the AIS causes the bike to go lean beyond xx point that will cause later valve and piston failure.