I was thinking about putting the v&h short shots on my nightster. would this require any work to the fuel injection?

 

exhaust doesn't change the a/f ratio so a remap would be completely pointless unless the intake has been altered.

 

Be careful. I work at a Harley dealer selling parts. The reason you dont to do a download or anything?...because the SE slip-ons are basically the mufflers that came on the bike stock. They arent the high flow slip-ons people have came to know and love. They are VERY restrictive, and basically just a cosmetic alternative to the stock mufflers.

Be VERY aware of running your engine lean. Lean=boom!!! dont play around with a lean modern air-cooled Harley. They are lean right out of the gate. Why the f@ck do you think they are so hot?!?!

 

Oh, it's worth it...Expensive, but worth it!

 

Exactly. No remap is needed with just an exhaust change.

 

Any de-restriction in the intake OR exhaust will cause a change in a/f ratio as in leaning it out. Dont burn a valve...

 

The reason the screaming eagles do not require a remap is because they just adjust one of the presets on the computer on the bike.

 

What??? The exhaust doesnt reset anything...where are you getting your information?

 

I cant believe there is no solid answer on this topic. Does Changing the exhaust alter A/F ratio? Do you need a remap after just exhaust modification? and if so what does the remap change exactly? More fuel? There has to be a harley tech on here who must have performed these remaps and knows the answer to these questions. I just bought some pipes that I am throwing on next week, Im not to concerned about it, but when some one states that by throwing pipes on your bike, you run much leaner to the point of boom? Which sounds rediculouse.

 

I just installed a pair of V&H sideshots. (actually had the dealer do it) This is a full system and this dealer told me that I didnt have to do anything. I do get a little of popping on decel. but none to worry about. Now when I put on the air filter, I will need them to remap.