hey maybe someone can help with this. i was reading the sticky and the guys are disconnecting the AIS (air injection system) line to stop decel popping. well correct me if im wrong but decel popping is caused by the bike running lean. i put a micron slip-on on the bike and now it pops. less back pressure so it will run leaner right? why not just richen the mixtutre to solve this problem rather than dicking with the AIS? anyways any opinions, experiences and suggestions would be appreciated.

ok, second part, if enriching my mixture seems like a more sane thing to do. how do i go about it with the onboard computer (no power commander). this question mostly applies to you fiero, your the bike tech. i can get to the C1, C2, C3, C4 settings, but im looking at the chart and not sure wich one to adjust, im thinking C2 is the right one. is that right? how much should i adjust it? im guessing positive numbers is richer and negative numbers in leaner?

http://r6messagenet.com/forums/showthread.php?t=15407

thanks

I'm not 100% on the categories. My bike isn't FI, and it's been a while since I re-read the article. But I think it's c1 is closed throttle, c2 is 01%-25% throttle, c3 is 26%-99% throttle and c4 is 100% or wide-open-throttle (WOT).

Now if you have decel popping you would want to bump your fuel on the gas a little, but also your closed throttle gas. Because it's not getting enough fuel when you shut down and ride down on the revs.

I'd write down what your stock settings are. Then go maybe +1 on c1 and c2, (now thats +1 over stock not reseting the counter to +1). Go ride for a little bit. See how it feels. See how if any it pulls harder off idle, in the midrange.

Adjusting FI isn't a one step process. You have to make adjustments and then see how they feel when you ride. Then you might be fine, you may have to add more fuel. You may get to the point where you have too much fuel and need to dial it back a little.

what year is it?

its an 04, ok does changing the mixture make more sense than blocking the AIS to you guys?

and fiero

Code C1: Fuel amount injected at 25% or less of throttle opening and at 3000 rpm or less of engine speed

Code C2: Fuel amount injected at 25% or less of throttle opening and at 3000 rpm or more of engine speed

Code C3: Fuel amount injected at 25% to 90% of throttle opening

Code C4: Fuel amount injected at 90% or more of throttle opening

Ya I knew it was incremental.

So you'll probably want to add a little to c1, probably some more to c2, and a little to c3. This way by boosting c3 you should have more power from fueling more ufel. By adding to c2 you should still be running more fuel even though your hand isn't on the gas anymore. And a little bit to c1 couldn't hurt.... I mean will smooth your transition and give you more off idle. Ya that's what I meant to say. More off idle, that sounds like a good answer.

But I must remind you to keep track of what you started with, and how much you alter your values. There's nothing worse then loosing your original settings and having no idea where to go back. Because if you don't have your originals...It's trial and error to get something close to making your bike run. :shock:

thanks for the advice chief. another question, how much should i increase it. i will write down the original settings and im wondering if i should go 1 point at a time? 5 points at a time? im not sure, what would you suggest?

Definately go +1 at a time. Because you shouldn't need much of a tweak. And if you go with a more agresive change than +1 you may overshoot the performance you're looking for and end up with a set-up that's worse than what you have.

yeah good point, i think im gonna give only C2 a +1 to start, then maybe go to +1 on C1, +2 on C2, and +1 on C3. (from stock settings of course) and start bumping it up like that. what do you think of that?

I'd bump one category at a time, and only bump them by +1 at a time. Since the break down is 1/4 above and below 3k rpm, it's going to be a little hard to tell where your hand is in relation the turns of the throttle.

Was I still below 1/4 turn, was that a change I made or is that little bit of power coming on? These are going to be vague feelings you'll be getting, all the while whipping down the road trying not to become road pizza.

Also back to a question you had before about whether or not to block off the AIS. I'm under the personal opinion that the more you have in your exhaust the less power you're getting. Give me motor to big a$$ header pipe to big a$$ free-flowin can. I want as few bends and as few restrictions in the equation. But that's just me.

ok, if i was to block off the AIS would you suggest just the one line? or all 5 (i think it was 5) of the lines coming off the AIS?

Just buy a power commander, get your bike mapped and be done with it.

Why spend $250 on a pcIII when the on-board diagnostics may solve his problem for free?

thats exactly the reason i started this thread, to make minor performance adjustment and stay 300 dollars richer. seems like a waste of money if i dont need it. anywyas, back to my next question.

ok, if i was to block off the AIS would you suggest just the one line? or all 5 (i think it was 5) of the lines coming off the AIS?

I din't forget, I'm just trying to track down someone with a FI R6 that has done that. I know it's supposed to help by not leaning out the mixture. But I've never done one myself. So I have to find somebody that's done it so I can find out whic if any or all holes do you plug. But I'll reply as soon as I get something.

right on, thanks alot