running straight pipes

[pm8675309]

This could be why people don't like me. I try to be nice, then people push my buttons and I turn into an asshole. I don't care, fuck off.

You are centered around yourself. Look what you wrote man: I, my buttons, I. You move through your life only considering the way you do things, the way people act towards you or the way things affect you.

I'm sure your perception indicates that everyone is an asshole. Try living outwardly. Empathy is a powerful consideration.

 

[jetlee]

 

[pm8675309]

Just offering some insight, just as you did.

I'm just trying the be nice but everyone is an asshole. Haha

 

[jetlee]

 

[pm8675309]

This has been far more entertaining than my cubicle. I'll stop flexing my internet muscles now. What's your address? I'll mail you a beer.

 

[30K09XB12R]

I ran my 09 xb12r with a 3" to 2" reducer tip with 1/2" internal cross V welded in. When i tried the header completely open it wouldn't rev or idle rite (100% oem bike). Sounded like a beast though. Even with the little bit of back pressure from my self designed tip, there was definitely a loss in power from OEM settings. Bike also ran HOT. 31k on the bike now an i installed factory exhaust with interactive valve held open for Jennings GP race track to stay within sound DBs. It was nice to have a quiet (for me) bike with all Factory HP an TQ back. bike ran cooler too even with hitting 6-7grand every mile (thats every 47.5 seconds, tracks 2 miles long).

 

[ztied]

I agree with jetlee,it seems everyone is focused on back pressure,becuase that is what we hear,so we assume the person we heard it from was right.I even said the same stuff before,but after educating my self,there is a lot more science to the exhaust then the back pressure.Dont know enough to argue it,but enough to not spread incorrect gossip.
I do appriciate jetlees info,and I want to learn more,so I can max out some ponies on my faithful stead.

 

[turbohearse]

Here's an old schoolers way of doing it. Paint a straight pipe white install the pipe on the bike run the bike till the paint burns off cut the exhaust where the paint stops burning to run straight pipes.

 

[wolfo68]

Here's an old schoolers way of doing it. Paint a straight pipe white install the pipe on the bike run the bike till the paint burns off cut the exhaust where the paint stops burning to run straight pipes.

Why?

 

[turbohearse]

It basicly shows you how long the exhaust travel is untill cool so you don't burn the exhaust valve out they did it on the old shovels and knuckle heads and old drag cars running open headers then do a turn out to the side of the car so you don't get to much exhaust fumes in the car.

 

[jscmoto46]

[up]

 

[K_twitch]

hey guys, i literally just joined to add my 2 cents haha. when i was 18 i got my first bike, an 03 XB9S, i love it, I've had it for 4 years now. I've recently been having trouble with the jardine muffler that came on it when i got, the rivets on the end kept rattling loose and every time i re-rivet it, it comes apart again, im currently a full time student at Lincoln tech for diesel so i have no money for a new muffler so i made a straight pipe for it. i made it as long as the jardine muffler with a 45 degree out the side. it had no power when i tried it out. so with some redneck engineering i crimped the end of the pipe with a vice and it works perfectly. sound awesome too!

 

[jetlee]

Here's an old schoolers way of doing it. Paint a straight pipe white install the pipe on the bike run the bike till the paint burns off cut the exhaust where the paint stops burning to run straight pipes.

No.

If you're running rich, your exhaust is cooler than if you're lean. This will change where the paint stops burning off.

You also notice that Harley has this horrible reputation of being unreliable. Don't you think your method might have something to do with that?

 

[Danicles]

I have a question. I bought a 2009 fire bolt with a jardean exhaust, and a stock ECM. It sure was dead under 3000rpm. It just stumbled and didn't pick up well, you had to eas the throttle though the low rpm. I put a EBR ECM for that pipe in it and it helped a bit. Just bought another 2009 Ulyesses and it has stock exhaust. Great power and torque in the low RPMs, not as cool of sound, but it's not my hot rod of the two. Do they have different cams between the two models? Or is it the variable exhaust valve that buell has that gives you more back pressure at low rpm and opens up more at high revs? My 98 1200xls straight piped, has tons of torque from a 1000 up! I think it's all computer, cams and exaust. A straight pipe would be awesome on the fire bolt, but to much time involved to tune it right, did a lot of reading on it and it's not worth my time anyways. 90ci kit is the way to go!

 

[theMelvster6]

Cams are the same grind for all xb models. The difference in cams for the 08+ Xb's is they have longer shafts and drive the integrated oil pump on cam cover. Also the stock 12 exhaust does have an exhaust valve to help with low end torque. Whenever you remove it and run an aftermarket pipe the trade off is typically less bottom end for more top end. The only real cure is a tune specifically for your bike. Even the EBR ecm tunes for specific pipes are still pretty generic.

 

[fglackin]

Anyone know anybody around horsham Pennsylvania I can take my 2005 xb12 to for a tuning problems?