did i hurt my baby

[mustang_banshee]

:: I have a 2006 banshee special edition all stock I installed a FMF fatty gold series exhaust without jetting it stock #200 jets I rode it for about three houres like this then finally installed the #260 main jets that FMF sent with the exhaust now it is breaking up real bad and backfireing/popping.If i put #220main jets in with the idle air screw turned ou 1/2turn it helps a little.Could i have damaged my bike by not jetting it right away any info would be great thankyou

[mustang_banshee]

:: I have a 2006 banshee special edition all stock I installed a FMF fatty gold series exhaust without jetting it stock #200 jets I rode it for about three houres like this then finally installed the #260 main jets that FMF sent with the exhaust now it is breaking up real bad and backfireing/popping.If i put #220main jets in with the idle air screw turned ou 1/2turn it helps a little.Could i have damaged my bike by not jetting it right away any info would be great thankyou

[mustang_banshee]

any help please dont want to end up blowing up ny shee

[98bonerSTOCKshee]

stock airbox and filter still?

[dajogejr]

If you rode it for three hours like that, WIDE OPEN all the time....you might have.

However, because of your last post (which...you should've kept all this in instead of creating a new one) it didn't sound like you hit 4-6 very often, that tells me you weren't WOT all the time.

 

So...you still have a problem elsewhere, just like I said in this post:

 

http://www.bansheehq.com/forums/index.php?showtopic=71038

[RNBRAD]

Make sure your stock snorkel is removed from the lid. I don't think a banshee can even be tuned with aftemarket pipes and the snorkel intake.

[sheefreak]

I had the same problem w/my fatty's. The 260 is actually too lean. FMF has always been wrong on this and have never changed it. I used to run 320's w/pods and Fattys, everything else stock. When I first bought the bike it had 200's in it w/the fatty's and actually ran pretty good until you got in the higher gears, just would not pull 5th or 6th. Found that the jetting was still stock and went w/FMF's advice on their website and installed 260's. Ran way worse than the 200's( I can't really explain why it ran worse getting closer to correct). Finally threw in some 330's and ran like a raped ape, but could tell by the plugs I was rich. If you are going to run the lid, definately take off the snorkel as Brad mentioned. But try some 300's or so to start, you will see a huge difference. I would personally run w/the lid off, but need to have the pro-design filter adapter to do so. If you do, start at 320's or 330's for the colder weather. This is also assuming you are somewhere close to sea-level.

[mustang_banshee]

I had the same problem w/my fatty's. The 260 is actually too lean. FMF has always been wrong on this and have never changed it. I used to run 320's w/pods and Fattys, everything else stock. When I first bought the bike it had 200's in it w/the fatty's and actually ran pretty good until you got in the higher gears, just would not pull 5th or 6th. Found that the jetting was still stock and went w/FMF's advice on their website and installed 260's. Ran way worse than the 200's( I can't really explain why it ran worse getting closer to correct). Finally threw in some 330's and ran like a raped ape, but could tell by the plugs I was rich. If you are going to run the lid, definately take off the snorkel as Brad mentioned. But try some 300's or so to start, you will see a huge difference. I would personally run w/the lid off, but need to have the pro-design filter adapter to do so. If you do, start at 320's or 330's for the colder weather. This is also assuming you are somewhere close to sea-level.

im running no air box at all wit twin k n filters i installed #330 main jets and it helped but now it wont idle unless i turn idle air screw in all the way then back it out half a turn

[dajogejr]

im running no air box at all wit twin k n filters i installed #330 main jets and it helped but now it wont idle unless i turn idle air screw in all the way then back it out half a turn

 

Good to hear. That means you need a larger pilot if it idles and runs better with the air screw almost all the way in.

If it has stock pilots, go to a 27.5 (next bigger size), it if already is bumped up one..go to 30.

 

I think 27.5 with 1.0 to 2.0 turns out will put you right on the money....and it will start easier too. It's asking for more fuel on idle to 1/8 throttle...a bigger pilot will get you there!

[mustang_banshee]

Good to hear. That means you need a larger pilot if it idles and runs better with the air screw almost all the way in.

If it has stock pilots, go to a 27.5 (next bigger size), it if already is bumped up one..go to 30.

 

I think 27.5 with 1.0 to 2.0 turns out will put you right on the money....and it will start easier too. It's asking for more fuel on idle to 1/8 throttle...a bigger pilot will get you there!

cool ill try that and let you guys know if it worked thanks for all the tips i would have never figured this out on my own i've learned alot from you all keep up the good work thankyou