Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[johnnymap]

Hoist, did he say when he might have the PP ready for the 07 SE's?

Thanks,

john

[kojak]

Rhino,
ref ideal afr:13.5 to 14.2 is good for running cool on a air cooled big twin, decent gas mileage etc. Fouling plugs at 12.

12.0 Rich
13.2 Slightly rich but comfortable for an air cooled engine
14.7 Stoichiometric or Theoretical ideal combustion
15.0 Lean
16.0 Pushing it here

Above is for reference
Below is copied from Daytona Sensor

Operating Mode Recommended AFR
Cold Start (first 30 sec) 11.5-12.5
Idle 12.8-13.5
Part Throttle Cruise 13.0-14.0
Wide Open Throttle 12.5-12.8 (values down to 11.5 may be used to reduce detonation)

[SPIDERMAN]

Hoist, did he say when he might have the PP ready for the 07 SE's?

Thanks,

john

?
            I've got one on my 07. Read earlier posts

B B

[Midnight Rider]

I'm just bumping this back to the top for those who might be interested, or missed it the first time.

With an update...I know the system is allowing more air because my MPG increased by a couple...still not lean, but definitely increased the air flow to the intake side of things.

[mdduce]

I put the Doherty on my 04 duce and was a bad mistake,I had the 113" SCREAMING BUILD  done by the harley shop,they said have a powercomander installed,the tuner thought the doherty might be a good thing since the build to get more air flow.well I got oil down the side of bike every time you nail it,also had no hp gain at all,called tuner up and told him about it he says,I know all about it already had other complaints,same concerns,took it back took it off no charge for labor so if anybody wants this thing with in line filter&cans 200.00 it's your's it may work for some on somthing just blown money here!!!

[Talon]

Mine came two days ago!!!

[SPIDERMAN]

I put the Doherty on my 04 duce and was a bad mistake,I had the 113" SCREAMING BUILD  done by the harley shop,they said have a powercomander installed,the tuner thought the doherty might be a good thing since the build to get more air flow.well I got oil down the side of bike every time you nail it,also had no hp gain at all,called tuner up and told him about it he says,I know all about it already had other complaints,same concerns,took it back took it off no charge for labor so if anybody wants this thing with in line filter&cans 200.00 it's your's it may work for some on somthing just blown money here!!!

There's got to be some reason for what you're saying here.  I'm not easily swayed by products promising this or that and 99% of the time, the last one to go for a really good product, so for me to say that the Doherty Power Pacc is worth every penny of what it cost is something. BUT, by the same token I have not installed a Doherty on anything other than a CVO 103 and a built up 96" to 103. Neither of which had real high lift long duration cams or other real Max Effort stuff. So there's got to be something in your motor equation that doesn't work with the Doherty. Who knows, maybe the Doherty gives the most bang for the buck with mild motor mods. It wouldn't be the first product. Talk to somone with a Magnacharger. They actually work best on stock motors. Thanks for the post. This could save someone with a big motor build from buying the wrong breather. As I've said before however they have performed incredibly well on the bikes I've had them on.

Just my $0.02

B B

[mdduce]

I didn't think about it but you may have a point,I just never looked for a better air flow until after the build,again because the tuner thought it might help squeeze a tad more hp out of it.Really,the best piece of work I've seen, the breather!It simply wouldn't let the motor breathe,it killed it from 4500 to 6000 rpm,didn't even realize it till the dealer told to me to try the old one back on just to see,I was amazed the difference.To be honest every one he had trouble with and only were the big stroke Harley motors?Dealer said he thought these motor's just built up to much pressure.Still got to thank the guy from TNT for being so kind and honest to reverse this thing NO CHARGE!!

[SPIDERMAN]

I didn't think about it but you may have a point,I just never looked for a better air flow until after the build,again because the tuner thought it might help squeeze a tad more hp out of it.Really,the best piece of work I've seen, the breather!It simply wouldn't let the motor breathe,it killed it from 4500 to 6000 rpm,didn't even realize it till the dealer told to me to try the old one back on just to see,I was amazed the difference.To be honest every one he had trouble with and only were the big stroke Harley motors?Dealer said he thought these motor's just built up to much pressure.Still got to thank the guy from TNT for being so kind and honest to reverse this thing NO CHARGE!!

I believe Chip, Hubbard, DCFIREMAN and others running maximum effort motors all use the Ness Big Sucker. If I've said it once, I've said it 1,000 times, the key to a good running motor is not necessarily using the best of everything so much as making sure everything matches up well.

B B

[mdduce]

            I couldn't agree more,just a learning curve,never did learn much without paying a little tuition.