they will run ok but hot way tooo hot. if your running in 60 degree temps youll be ok witrhout a tune but sit in traffic on a 90 degree day and you will burn things without a tune. heat is the #1 killer of air cooled motors why risk it?

 

Thanks for the info. I called Jamie, and ordered the 319 package deal. I hope it is worth it. Not really sure what to expect. Searching around this site I gather helps with heat, quicker responce, fattens up the fuel, and with the new pipes should add some hp/tq. Sound about right?

 

if its running hot aka lean you should have some popping and or lose power

 

Personally no you don't need too.

Do your research. Try tuneyourharley.com read, read, read, read.

Of course your pipes turned blue all pipes will, it is a natural chemical reaction of metal to heat. 300 - 700 degrees.

For all those professing a tune, a power commander or anything else;

Where is the documented proof? Not the I heard from a friend blah, blah, or my indy says so, or I read it on the forum and by gawd that's gospel.

Show us in writing mechanical proof, charts, independent research by a reliable source.

Not trying to be a wiener but backyard mechanics and hearsay evidence doesn't make a very good case for belief.

 

I think I won't be buying anything from their website>>tuneyourharley.com ie xieds.
Nothing more than inline resistors fooling the ecm.

 

I believe you changed your tone in mid-stream, but to answer your initial question, if you're just changing exhaust you dont need to change anything else. You'll still be running "factory lean", which I don't reccomend, but you'll be okay. Add a a high-flow air cleaner and you'll definitely need a fuel management system.

 

Yes... it will adjust back to the 14.6:1 epa setting.Depending on the rpm range,a v-twin likes 13.8 - 14.2:1. If ok is good enough,then leave it be. If you want max perf,economy and and longer service life,you must tune the motor.

 

Dude,you sound so ridiculious.This is not rocket science.Your adding new pipes,which creates better breathing(more air),so you have to add more fuel.The ecm's on these bikes are not that self adjusting to adjust all the lean spots at different throttle settings.The ecm needs to be adjusted with a device that can change the settings while using real world conditions(Dyno tune).The PC's work but it's a piggy back system.Newer bikes benefit more from fuel management systems like the TTS,SESPT,or the SERT!!! When ever you change the pipes,or air cleaner the bike needs re-tuning,it's a fact.Your changing air conditions so you have to change fuel settings.If you don't you run the risk of damaging the motor.It might not be visable at first, depending on weather conditions,but it will surface at some point in time, & maybe by then it's to late.If you pay top dollar for a Harley why cheap out on the tune?? Most due, & thats why most have problems!!! Any one that says you don't need a tune after changing pipes,or a/c doesn't know what they are talking about.If they think they do, then line up against someone who has had a tune done correctly & watch him smoke your ***!!!

 

Guess I shouldn't be amazed with all the different opinions. Appreciate all the advise. I was just really looking for loader sound and caught a good deal on pipes. In the process didnt want to sacrifice the sound, and cause damage to the bike. I understand that dyno tuning is the best procedure, but considering most say nothing is required when changing exhaust, think the AC/PCIII I just ordered is a step in the right direction. When I spoke with the guy at fuel moto (who is recommended on this board) he knew exactly what I needed. Thanks again everyone

 

Tell us how you like the performance after you get FM's pkg installed. Forget all the debate on here..........I am betting you will notice an improvement and be happy with your purchase.