Donny Petersen says new HD'S are running rich!
Road Master
Joined: Dec 2006
Posts: 1,058
Likes: 6
From: Omaha Nebraska
Is it possible Donny is talking WOT only. At 'wide open throttle', manufacturers always bias the A/F ratio safely too rich, do to production variances which causes different engines to run different ratios. Better to error on the rich side.
Seasoned HDF Member
Joined: Oct 2006
Posts: 5,977
Likes: 85
From: Nevada
Certainly possible. I just looked at the 3 maps I have for my stage 1 07. There are some negative values in some spots in some areas above normal cruise rpms.
Road Master
Joined: Nov 2007
Posts: 774
Likes: 54
From: Brandenburg,Ky
Is Donny only talking about the 09's. my reason for the question is I called D&D exhaust asking about there new BOSS which they told me only on the 09 you can put on there BOSS (2 into 1 or slip-ons) and a high flow A/C WITH OUT ANY TUNING OR TUNER!!!
THEY ALSO SAID IT WOULD NOT WORK ON 07'S & 08'S
So hears my question what would a HD stage 1 down load do for a 09?
THEY ALSO SAID IT WOULD NOT WORK ON 07'S & 08'S
So hears my question what would a HD stage 1 down load do for a 09?
Tourer
Joined: Jun 2009
Posts: 485
Likes: 1
From: Mississauga, Ontario
Oh, the great Donny Peterson
Great forum. Now I understand what is really behind these posts. Now you are all taking advice from the great Donny Peterson, media guru of the HA's.
You're a fu##ing disgrace
You're a fu##ing disgrace
Elite HDF Member
Joined: Jun 2006
Posts: 3,698
Likes: 11
From: Longview, Washington
In the August issue of American Iron, Donny Petersens techline article deals with heads and exhaust systems. Deep in the article on page 60, he says when adding mufflers and an air cleaner that- "The stage 1 recalibration may or may not be necessary since many TC 96 Twin Cams already come with a slightly rich AFR from the factory".
Does that make any sense to anyone. I always thought the opposite!
Gary D.
Does that make any sense to anyone. I always thought the opposite!
Gary D.
I myself chose to go straight to him with my questions. He answered my questions quickly and completely.
This is the email address I used.
sales@heavydutycycles.com
Why don't you give it a try? I'm sure he will clear this all up.
Steve
Thread Starter
|
Account Retired
Joined: Feb 2006
Posts: 2,448
Likes: 8
From: On Parole - Grays Creek, North Carolina
I called D&D myself and they told me that only on the 09's can you put a set of slip on's and a zippers high flow air cleaner and run it without any fuel management system. On 07's and 08's it cannot be done. Only on 09's. They told me that they tried race tuners, stage 1 downloads, and other fuel management systems and it didn't make one bit of difference, the air fuel ratio stayed the same. They also told me that they wouldn't put that claim out there if it wasn't true, that they spent a lot of dyno time before they made this claim.
I'm still a little skeptical, but call for yourself, they sound pretty convincing.
Gary D.
I'm still a little skeptical, but call for yourself, they sound pretty convincing.
Gary D.
Cruiser
Joined: Jun 2009
Posts: 101
Likes: 0
If you go to www.supertrapp.com you will find for 09's 2 into 1 A/C and no tuner?????????
Looks like the 09's have some changes???????????
Looks like the 09's have some changes???????????
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider
Verdad Gallardo
Intermediate
Joined: Jul 2007
Posts: 34
Likes: 0
From: The Department Of Acceleration
Donny is a very intelligent, giving and polite man and doesn't deserve to be slandered in such a manner. He is an incredibly thorough individual when it comes to authoring technical articles and if he states something in writing he is right more times than he is wrong.
Of course everybody has the right to disagree, but isn't it better to do so in a decent manner?
Cheers,
Speed