Just to keep y’all in the loop I contacted the guy that did the dyno this morning and told him I wasn t happy with my low end throttle response, he immediately wanted to schedule me In to tweek the tune at no charge, so I go back next week, he appears to be genuine and willing to retune my bike I’ve got nothing negative to say about him or his shop, I just didn’t understand how it could be the pipe I researched the hell out of pipes before I Decided to go with the pro pipe

 

pro-pie is a good pipe, been around for awhile, lots of people have it. your tuner should of done a full tune instead of half ***'ing it. Some tuners get lazy, figured you were a wide open throttle kinda guy maybe. lol. When I had my bike done up, I paid for 8hrs on the dyno, and my tuner did everything. took care of every pop and plip, tuned out the low-mid and upper. i ride normal and I bag the crap out of it occasionally, hasn't let me down. (knock on wood).

 

the pro pipe is a great pipe and will support over 100 hp and does very well with lower numbers. not all tuners know how to tune the pipe it's-self to work with certain builds. you have to tune the pipe, then tune the fuel and ignition. not all tuners can tune pipes. i have extensive knowledge and experience with the pro pipe from V&H personally and on my dyno. the pipe can work out for you, just need some more work on the pipe and the tune. to tune the pipe, the baflle needs to be worked with, then tested on the dyno to see what your work got you. this is my experience, not opinion so i hope that helps.
m

 

We always go the distance when it comes to working with the clients exhaust, but on our larger cube builds...117" up, the proper pipe is VERY important.
Scott

 

Is this pipe problematic for just a 96 with Andrews 48 H cams ? It seemed to do very well with stock cams

 

The ProPipe is not problematic at all with the stock baffle. It is a good match for your combination. As any build, it just needs a competent tuner.
Some have found slight improvements by covering up one row of holes in the baffle with a hose clamp. It’s a method to fine tune the pipe but in stock form the pipe works quite well.

 

Exactly what he said!! I had the same problem with Zippers 575 cams and 106 kit I installed. Had it tuned at HD dealer and it sucked. Had Dr. Dyno tune it in Daytona and the difference was NIGHT & DAY! It's all about the tune...and most don't know what they are doing.

 

Back in the day there were a couple of mods to the earey (megaphone muffler) Propipe. The two most popular were the "lollipop" and the adjustable washer modifications. Both were effective in reducing or eliminating the torque dip that was a common characteristic of that pipe,adding a bit of low end TQ, as much as a 10ft.lb. increase without hurting HP; cheap mods but real gains. BTW, the early Propipe was a much better performing and sounding pipe than the current iteration. I tried the later Propipe on a 95" motor a couple of years back and hated the highway drone; got rid of it after my first highway ride at steady 75mph cruise. My brother still has the early Propipe and it sounds so much better.

The best mod to be made to the current Propipe would be to convert the end cap to accommodate discs like the Supertrapp. Easly and cheap mod that will make a real difference and makes the pipe "tunable" to marcodarqs point. Pictures attached; just a little work, some hardware and a pack of discs for the tuner to work with. Much better mod than modifying the baffle, covering up holes, etc.

 

OP, listen to what everyone here is saying: IT'S NOT YOUR PROPIPE. It's your tune. Hopefully your tuner gets it sorted out. If not, Scheffer Performance or if in Northern IL, head up to Whitehall, WI to Razorback Performance and see BVBOB.

 

Definitely agree with DJL on the older pro pipes being better, but pro pipe, D&D, thunder header, rb racing are the top performers as far as 2:1 pipes go.....get your bike retuned.