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Insaneboltrounder/sjohns
Well-known member
Yea that was interesting. I see DD has a can that you can adjust back pressure. Anyone try it?
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I've got a DTR subscription, and yes, they got 175 on Billy Howards F800 SP using a PC5, Boyesen reeds, 3 degree key, and they dropped in a small piece of flared tubing into the neck of the can where the pipe fits on. This years pipe has a wider stinger lowering back pressure, so they were after more back pressure without replacing any of the pipe/can. They got 5 hp out of the tubing mod. This was all 91 octane trail safe and at an uncorrected 73 degrees. My guess is a can alone with no matching pipe that flows too good may not be all that great for numbers. We'll see.
Talked to Scott again today and put my order in for the Hps. They just about got it ready, little more testing on mid range and will be done. He hopes to have all current orders taken care of before Christmas.
Thanks for the more detailed description on how they achieved more back pressure, and at 73 degrees to? Impressive for a relatively stock set-up. Buddy also mentioned torque was slightly better with the bone stock set-up. Can you confirm?
HPS is the way to go. you won't be sorry for the wait. here is the info you asked for.
www.teamhps.com
208-357-3343.
S/C
everything sounds great i am just not sure about the noise.
Best torque was achieved with a PC5 adding more fuel in the mid, less on top, and adding 3 degrees of timing. The pipe insert added even more, as did the reeds. All with a stock pipe and silencer. I'm going to give Billy a call at Howards inc and see if he has more info on this setup. Might be a nice sleeper way to go if you don't mind the stock setup.
Id love to hear what he says. This was a setup for drag racing , not sure it would be one you would use i the mountians?
What kind of weight loss is to be expected the HPS can?