K&N Air Filter Question

[dabull]

installed the K&N today, i'd swear the beast is runnin better with the new filter....

2005 Nomad 1600, stock dog bowls, debaffled stock pipes, cobra FI2000r set at default settings......do i need to tweek the settings or should they be good?

[ringadingh]

The settings should be good as they are. But it doesn't hurt to try, and see what you could improve. You can always put it back if need be.

[blowndodge]

Thats a hard question Derry. Each bike is different. So much has been written about tuning an aftermarket fuel processor for Nomads.

In nut shell the first pot should be set so that you can hold a steady speed up a long decent grade in warm weather in high gear and not hear pinging. The second pot should be set in the same environment as the first pot so going up that same grade in high gear you can twist the throttle to pass or just accelerate and it doesn't ping doing that either.

When you yank the throttle open after holding a steady speed you open the butterflies in the throttle bores dumps a blast of lean air into the engine. The second pot controls dumping raw fuel into the intake charge to combat this momentary lean condition just like an accelerator pump on a 4 barrel carb.

Best fuel mileage is setting both first and second "pot" so the your just on the verge of ping in very warm weather like 90 or above.

third pot doesn't need adjustment as your plenty rich enough the the throttle wide open which the third pot handles.

Putting in a K&N shouldn't have changed a thing as far as adjustments but the above is just a summary on tuning aftermarket fuel processors.

[AlabamaNomadRider]

Sounds like good advice Brad. I will keep that in mind.

[Bdog]

Stock settings on the cobra 2000r will work just fine. If your getting backfire while decelerating then change the 1st pot down slightly..Bdog

[AlabamaNomadRider]

What all does the first pot control, second and third. I don't have my instructions for mine and I don't think it told what each pot setting does. Is there a better way to determine what each pot does?

[cactusjack]

If your intake system is stock, ie: filter on the left side, crossover tube, no filter on right - then you probably haven't done anything to really increase airflow. The crossover tube is a bottleneck and will restrict the flow of air. I don't think you need to change your settings.

Now if you opened up the intake and no longer used the crossover, then you might have a need to tweak the Cobra unit.

[dabull]

Originally Posted by cactusjack

If your intake system is stock, ie: filter on the left side, crossover tube, no filter on right - then you probably haven't done anything to really increase airflow. The crossover tube is a bottleneck and will restrict the flow of air. I don't think you need to change your settings.

Now if you opened up the intake and no longer used the crossover, then you might have a need to tweak the Cobra unit.

working towards doing chucktsters dual-side mod...just not now....thanks for the help fellas

[macmac]

Oh just chop out that blasted cross over tube, and get it out of the way. Go naked on the left, or hang some bling there.

When it comes time for cam chain extenders you can thank me.

If your worried about cutting that fool cross over cut it apx 5/8th" back from the left flange, and one day ::) you can plastic weld it back in if ya want. :'(

[danleb75]

Originally Posted by DaBull

installed the K&N today, i'd swear the beast is runnin better with the new filter....

2005 Nomad 1600, stock dog bowls, debaffled stock pipes, cobra FI2000r set at default settings......do i need to tweek the settings or should they be good?

Dabull, you got the exact same set-up as me on my 05 Nomad. I've been concerned with lack of power and engine knocking when riding up hills or pulling the throttle on hills in 4th and 5th gears. Actually, my 5th gear is useless.

However, one of my friends at work asked me about my air filter. Like I said, it's an 05 with 14000 km on it. I said I never checked it. I pulled the air filter and I can see day light on the sides, but it is noticibly darker on the top and bottom of the filter. I ordered a K&N today, and am waiting for my FI2000R to arrive.

Surely, if I get more fuel with the processor, and more air with the K&N, the power has to come back without the engine knock under load?

My friend suggested I go for a quick ride tonight without the air filter to see if it runs any better. If it does run better, I may have found my problem.

I hope running the bike for a few miles without the filter doesn't do any harm?????

[redjay]

A few miles should not do any harm, unless those miles are in a sand pit in a wind storm !

[danleb75]

Running without the air filter was a bit better, but if I rolled the throttle in 5th at 100 km (60 mi), then I would get the marbles in the motor sound. When the motor makes the sound, it comes with a vibration in the bike.

[dabull]

i too receive pinging under throttle....but that could be due to running the lower octance an the heat of NW Florida....can't say I've noticed the pinging with the higher octane fuel....will have to run a tank...

[danleb75]

I run only the high octane fuel, plus I've run some Seafoam with the gas last week. I just find that the bike could run smoother under load. I had an 06 Meanstreak my last bike. It had stock air intake, BUB Jughuggers, and a Power Commander III. The bike never pinged one under any condition, and never shook when under throttle.

[macmac]

Originally Posted by danleb75

Dabull, you got the exact same set-up as me on my 05 Nomad. I've been concerned with lack of power and engine knocking when riding up hills or pulling the throttle on hills in 4th and 5th gears. Actually, my 5th gear is useless.

However, one of my friends at work asked me about my air filter. Like I said, it's an 05 with 14000 km on it. I said I never checked it. I pulled the air filter and I can see day light on the sides, but it is noticibly darker on the top and bottom of the filter. I ordered a K&N today, and am waiting for my FI2000R to arrive.

Surely, if I get more fuel with the processor, and more air with the K&N, the power has to come back without the engine knock under load?

My friend suggested I go for a quick ride tonight without the air filter to see if it runs any better. If it does run better, I may have found my problem.

I hope running the bike for a few miles without the filter doesn't do any harm?????

Do you know 4th and 5th are both over dive?

60 mph in 5th and gunning up a hill isn't going to work well. Try 3rd.

Nomads don't have the same cam, or as large a thottle body either as the meanie has.

The Cobra setting are intended for a after market exahust and more air than you can pull thru that cross over tube.

If it were my bike I would turn off all 3 pots and then set each one starting with pot 1 first.

You should end up with 0 ping, and be able to run 87 octane.

The default settings everyone does, I never read that anyone ever needs to turn the black stock right side air knob out, to drop idle.

When these fuel moduals are getting set up, so far 4 times, of 4 times I had to drop stock idle, before I could get the idle set up done on pot 1.