AFR Info

[chef1366]

So I guess throttle chops are out of the question?

[posplayr]

So I guess throttle chops are out of the question?

I would need to go out of town again ; I brought a celan set of plugs yesterday but no where to really do a steady pull to check it out.

I did read the used plug I had and it looked great.

[posplayr]

for comparision here is a guy with plots from his 06 R1. looks pretty similar to what I have on the ED.

http://www.innovatemotorsports.com/forums/showpost.php?p=73013&postcount=3

[drhach]

Have you noticed any changes/improvements in fuel economy since doing this testing?

[posplayr]

Have you noticed any changes/improvements in fuel economy since doing this testing?

Can't say much about MPG as most of the work was to acheive more consistent power delivery.

[TSCC]

Can never have enough info.

Mikuni Manual > Click <---------

[gearhead13]

One final update on jetting. After ridding without the LM-2 AFR installed I started to get some low RPM sogginess. I assumed it was the needle so I dropped it all the way to the bottom groove. That was a mistake The plugs came out black after a few minutes of low throttle cruz'n.


I ordered 45 pilot jets, to replace the 47.5 Bill had installed for when I originally had the 4:1's installed. The new pilots had the holes while the old ones did not . Anyway went back to the original #2 grove position with the 45's and the bottom end is now very sweet and I got an inadvertent power rollown 2nd gear wheelie so it seems to be running crisp.


Final settings then:

Mains = 135 (down from 145)
Grooved DJ needle = 2nd grove from the bottom (down from 3 1/2)
Pilot jet = 45 (down from 47.5)
Mixture screws were set for max RPM = close to 2 turns (was 1.5)
Float height 22mm (unchanged)

I'm assuming that the fatter needle and smaller Main are to compensate for the 4:2:1 v.s. 4:1 flow characteristics. Dyno Time?


Just a note, After changing the pilots and checking the float heights , I reinstalled the carbs and the bike stumbled at idle and ran higher idle. I assumed it was the pilot change. After digging out the Balance gauges and calibrating them I realized that the chock cable was not seated and it was partially pulling causing one set of carbs to be more open that the others (Duh).

Anyway basically the pilots did not affect any of the carb throttle balance settings

Good info here, thank you.
Do you know what size pilot air jet you are running?

[Darin Jordan]

All I can say is WOW! Thank you for all of that info! It's VERY helpful and informative! Lots of work.

[posplayr]

Good info here, thank you.
Do you know what size pilot air jet you are running?

I can only assume it is stock; I never changed it.

[posplayr]

Can never have enough info.

Mikuni Manual > Click <---------

I am using the Mikuni BS36 carbs that probably came from a Canadian GSX1150

[AJ]

Sorry if I missed this information (haven't read the thread carefully), but...

Can somebody point me to instructions for installing an AFR meter on a bike?
Can the probe go down in the collector?
Can a "temporary" installation be done instead of having to weld on a bung?
Has anybody tried one of the inexpensive AFR meters? (some on ebay are about $25, plus another $15 for a "universal" 4 wire probe)