I would really like to get rid of that ugly stock can on the side of my bike... no, I want to get rid of any can. I was considering running a straight pipe. Before I break out the cutting torch... Will a reduction in back pressure cause a problem, if I have a custom map done for my PC?

I'm throwing on a BMC air filter and a few other things. Any KNOWLEDGABLE help would be greatly appreciated.

 

Problem as in mechanical? No. Problem as in a reduction in low end power? Yes, even with a custom map. If all you want is looks and/or sound then theres no reason not to do it.

 

If you have some welding talent, time & imagination, I would recommend trying to adapt a tail-up exhaust from a 600RR onto it.......or fabricate your own.

 

You will lose some low end power,but gain top end.I have done this before,but went back to a long pipe cause it was too loud lol.

 

they also make shorty pipes too, i ran mine straight piped for a while and it has a massive lag when your taking off fast. It pissed me off alot especially riding with friends, i was always playing catch up off the lights

 

if you don't mine losing some low end you'll be ok.

If you're talented with metal-working and weilding you can create a baffle to regain some low end.

I have a straight tip on my header about 6-8 inches long that was straight thru for a while, i made a baffle for it that i feel was a serious performance improvement. I lost a few HP but also shed quite a few pounds and she handled a lot nicer in the curves without that big fat stock pipe on the back.

 

will be insanely loud, your neighbors and local LEO will hate you, well ok LEO's may love you and may get a raise for the new income of funds :lol:

Loss of low end, gain on upper end that you'll prolly never use. And IMO sound like pure shyt.

 

I got the Moto GP style exhaust and it has a small and I mean small amout of packing for baffling in it and it dumps out right beyond the lower fairing....I have not noticed any lag on take off but have noticed that it is LOUD!! I was coming to a friends house this weekend and he said he could hear me on the interstate a mile away coming. lol......

 

stick with a can that's been dyno tested and manufactured for the f4i. Otherwise you'll have a bike that just makes a lot of noise and you'll get frustrated real quick. By the way, can somebody tell me why a bike needs to sound loud? Is it to impress everyone? Is it to get attention? It certainly does nothing for performance. I just gotta know.

 

Yes.

Yes.

Notice, you don't see the pros going with straight pipes. Compensating for something, imo.