HEADS UP!!!

Site upgrade in progress... Core site functions are working, but some non-critical features/functions will be temporarily unavailable while we work to restore them over the next couple of weeks.

Please post any bugs you encounter, but before you do, check to see if it's already listed.

Thanks for your patience while we work to improve the community.

Sign in to follow this  
Followers 0
cahillmd

Dr. D Pipe for my 01 426

8 posts in this topic

I put the pipe on a couple of weeks ago and I have one race on it so far. All I can say is AWESOME!!! Everything that they have written or said about the pipe is true!!

Share this post


Link to post
Share on other sites

I also have the DRD pipe and agree w/ cahillmd, this pipe totally rips!

Pilot-

It was a little under $400 bucks, but worth it. The construction is top notch and the performance gains make it worth it in the end. A buddy of mine is getting the Thunder Alley pipe soon and Im anxious to see how that compares after all I have read here on TT. Yes, it is simple as bolting it on. It took me about 10min to install and no jetting changes, though I had already lowered the needle by one setting. :)

Share this post


Link to post
Share on other sites

Hero-

I agree with your assessment, but I don't experience any bogging off the bottom that seems to be plaguing some of the others that I read about.

Share this post


Link to post
Share on other sites

I'm looking forward to that comparison (Dr.D & Thunder Alley ). They're aren't any visual ques to go by with the Dr.D pipe so I don't know what they're doing to improve flow. The Thunder Alley pipe/philosophy makes a lot of sense and performance. Let us know how that turns out. It's very rare that we get to compare stuff side by side.

Share this post


Link to post
Share on other sites

the dubach pipe has 4 "step ups" which improves flow, Doug explained it to me..he said he was able to increase flow a little.. but the step ups is the key... he also told me the jetting trick is to use the next size leaner needle.. i put the needle in along with the pipe.... big big big improvement! cleaned up the whole powerband......

Share this post


Link to post
Share on other sites

Ahhhhhhh Haaaaaaaaa! This principle is very similar to the Thunder Alley philosophy. They use a megaphone to create a vacuum which actually sucks the exhuast out of the head improving flow dramatically. I'd be very curious to see how they perform side by side.

Share this post


Link to post
Share on other sites

That sounds unusual to lower the needle (lean) on this motor. With a free flow exhaust sure seems more in need of enrichening both low and high? Just Wondering

MotoHero

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0