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Cobra Speedesters Long and Drilled Air Box FI2000R Pot Settings

Mon, 2008-09-29 09:42 — chadvicki

Was wondering if any of you have the following setup and what your pot settings were.

Cobra Speedesters Long and Drilled Air Box

What would be the best pot settings for this?

Thanks,

Chad

‹ Cobra FI2000R Install Drilling OEM exhaust?! ›
Wed, 2008-10-29 23:18 — r.morales1

Cobra Extra long pipes.

I too have the Cobra pipes with the drilled box but with no fuel system. So far I've put about 300 miles on them and so far so good. I have a little popping when I decelerate, but no other problems. If you can live with the popping (Doesnt happen often) you'll be fine. I'm looking for a cobra system to try out so if anyone has one cheap...... Please contact me. Dont want to pay full price and then not like it.

//Rick//

Wed, 2008-10-29 23:50 — MORG_kw

Cobra Fi2000r

Hi Rick.

If you do consider a Cobra FMS, look only at the Closed Loop unit for our bike, rather than the Open Loop unit. While you certainly can get by without adding a FMS, there are great benefits to be found with it.

As it's often been stated: Increased air flowing into and thru the engine increases the engine's air/fuel ratio, which means it becomes even leaner than it was when it came from the factory in its stock and already somewhat lean condition. The only way to effectively compensate for this is by adding just a little more fuel to the system (with a FMS), which in turn will lower the a/f ratio back down to an acceptable number. The leaner the engine, the hotter it runs, while also not doing any great favors for its extended longevity. Our bike's ECU can compensate for some things....altitude, humidity, air temp, etc., but it won't add enough additional fuel to make up for that increased amount of air flowing as a result of those mods being done to your bike. Remember: an increased volume of air "into" the engine (air box) PLUS an increased volume of air "exiting" the engine (modified, or new exhaust) EQUALS increased HP and enhanced efficiency almost 100% of the time.

So, is a FMS required? Absolutely not. Will it provide advantages and make a positive difference? Absolutely, it will. Also remember..."CL"OSED loop unit, not the Open unit)

Be well.
Morg

Sat, 2008-10-04 17:24 — paulinokc

fuel controller

you should not need the controller. our bike has a computer to control air/fuel mix. I am almost home from a 2 week 1800 mile road trip - and the bike has performed flawlessly. My dealer told me that i would need a controller when I put the Cobra long pipes on. Yamaha tech rep said no. The computer will reset and adjust for altitude etc every time the key is turned on. I live at 800' elevation and was over 10000' 3 days this week. no problems......paul