V&H ProPipe vs D&D FatCat Dyno Results

Closed Thread Subscribe

Thread Tools

Search this Thread

Mar 3, 2012 | 08:34 AM

#11

jo_mama

Elite HDF Member

Joined: Aug 2011

Posts: 3,881

Likes: 3

From: Pennslytucky

Quote:

Originally Posted by Ride my Seesaw

Was it tuned up, let's say on the D & D, then changed to the Pro-pipe without retweaking the tune? Or was the bike retuned each time the pipes were changed making for a level playing field?

give the dyno guy some credit. i doubt even a bad technician would do that.

Mar 3, 2012 | 02:07 PM

#12

fella

Thread Starter

Road Master

Joined: Jul 2011

Posts: 1,237

Likes: 3

From: Wis

Quote:

Originally Posted by Ride my Seesaw

Was it tuned up, let's say on the D & D, then changed to the Pro-pipe without retweaking the tune? Or was the bike retuned each time the pipes were changed making for a level playing field?

The bike was retuned for the pipe.

Quote:

Originally Posted by ackman1968

I like the sound of the Fat Cat and it looks way better than the Pro Pipe. One day my bike will have one, just have other places to dump the cash right now. Thanks for sharing the numbers though, just reinforces my desire to have one.

Welp...after looking at the dyno chart I feel MORE than vindicated in my decision to swap out the FC for the PP. I gave up 4 peak hp and 5 peak tq but gained 15ftlb & 8hp up to 3k where the FC always felt weak. I'm happy!
Name: img001.jpg
Views: 2282
Size: 97.0 KB

Name: img001.jpg
Views: 2282
Size: 97.0 KB

Mar 3, 2012 | 04:04 PM

#13

oct1949

Club Member

Joined: May 2007

Posts: 145,895

Likes: 821

From: 40 miles Northeast of Indy..

Thats what I see when I enlarge the sheet.

I also see the Pro Pipe kicked the D&D in the 2- 3k rpm's, which is the rpms where a lot of us spend a lot of time.

Is that the newer PP chrome or the older style BP - PP??

k

Last edited by oct1949; Mar 14, 2012 at 08:39 PM.

Mar 3, 2012 | 05:48 PM

#14

fella

Thread Starter

Road Master

Joined: Jul 2011

Posts: 1,237

Likes: 3

From: Wis

Quote:

Originally Posted by oct1949

I also see the Pro Pipe kicked the D&D in the 2- 3k rpm's, which is where a lot of us speed75% of time riding.

Yeah pretty cool huh!

Quote:

Originally Posted by oct1949

Is that the newer PP chrome or the older style BP - PP??

It's the newer one.

Mar 3, 2012 | 06:07 PM

#15

ackman1968

Elite HDF Member

Joined: Aug 2006

Posts: 3,863

Likes: 21

From: Kennewick, WA

Quote:

Originally Posted by fella

The bike was retuned for the pipe.

Welp...after looking at the dyno chart I feel MORE than vindicated in my decision to swap out the FC for the PP. I gave up 4 peak hp and 5 peak tq but gained 15ftlb & 8hp up to 3k where the FC always felt weak. I'm happy!

Damn, it beats it up right in the heart of my riding range! Just what I needed, something else to think about.

Mar 3, 2012 | 06:22 PM

#16

JohnC FXDX

Road Master

Joined: Jul 2011

Posts: 1,016

Likes: 3

From: West New york, NJ

You'll notice that 15lbs. in the low end vs. That few at the peak. I actually had some guys on the Dtna forum the other day trying to justify a 2-2 over a 2-1. They were trying to say that you would never feel the power difference and the two bikes would be even in a race. This shows how different two different 2-1 pipes can be, and they are both better than a 2-2.

Mar 4, 2012 | 12:58 AM

#17

fella

Thread Starter

Road Master

Joined: Jul 2011

Posts: 1,237

Likes: 3

From: Wis

Quote:

Originally Posted by JohnC FXDX

You'll notice that 15lbs. in the low end vs. That few at the peak.

I always felt that my bike with the FatCat never really pulled in the low rpm's especially riding 2 up. Kind of a pita at stop lights in town. I think you're right about feeling the difference where the Propipe is stronger.

Mar 4, 2012 | 02:24 AM

#18

bigdaddy33

Elite HDF Member

Joined: Apr 2009

Posts: 4,082

Likes: 11

From: Long Island, NY

I guess I'm looking at the results a little differently. The point of doing performance mods is to see improvement when you twist the throttle to accelerate. Between 3-4.5K RPM's, the D&D is clearly the better performing pipe.

HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders