dyno tune question
Cruiser
Joined: Mar 2014
Posts: 242
Likes: 0
From: South Florida
No, you can tune the bike yourself with TTS or Power Vision but it's a lot of work to get it dialed in and you really need to understand how the ECM and fuel injection work to dial things in. There are a lot of us that have done it with outstanding results. That being said it is best for most people to just put the bike on a dyno and have it tuned.
Outstanding HDF Member
Joined: Jan 2007
Posts: 2,598
Likes: 19
From: Naples FL / Pine TWP PA
Again I quote the guy that did the work on my heads "Oh you have a SERT like device?" Yes I do. "You can do anything with that I can do on the dyno" "You don't need me to dyno tune it". "Do this, this, and this" "The tune will be great". I did, it is, along with some help from Jamie.
Cruiser
Joined: Mar 2014
Posts: 242
Likes: 0
From: South Florida
It's not close enough. Man I get tired of reading this. I don't know if people don't understand engine tuning and ECMs or it's guys with dynos trying to sell service.
Again I quote the guy that did the work on my heads "Oh you have a SERT like device?" Yes I do. "You can do anything with that I can do on the dyno" "You don't need me to dyno tune it". "Do this, this, and this" "The tune will be great". I did, it is, along with some help from Jamie.
Again I quote the guy that did the work on my heads "Oh you have a SERT like device?" Yes I do. "You can do anything with that I can do on the dyno" "You don't need me to dyno tune it". "Do this, this, and this" "The tune will be great". I did, it is, along with some help from Jamie.
Outstanding HDF Member
Joined: Jan 2007
Posts: 2,598
Likes: 19
From: Naples FL / Pine TWP PA
I'll tell you what I have had two dyno tunes and my road tune is better than both of the tunes off the dyno.
1. I don't ping at all, ever.
2. I get right about 49 MPG at 75 MPH.
3. If I hammer the throttle in first gear I lift the front wheel.
4. I walk away from CVO 110 bikes.
6. I cruise through the mountains without ever leaving 6th gear all the way down to 60 MPH (This was the goal of my build, I wanted more touring torque).
Maybe I am leaving a few HP and a couple foot pounds of torque on the table but it's not much. Drag racing was not my goal. It was a bike that tours well and runs well. I got that in spades. The extra performance was a bonus. These Harley motors are pretty simple things to build and tune. They remind me of VW motors that I first learned how to rebuild when I was a kid. It's not like you are tuning a modern high performance V8. What makes them go is well known. There is no secret sauce. Of course if you want to believe there is fine by me.
1. I don't ping at all, ever.
2. I get right about 49 MPG at 75 MPH.
3. If I hammer the throttle in first gear I lift the front wheel.
4. I walk away from CVO 110 bikes.
6. I cruise through the mountains without ever leaving 6th gear all the way down to 60 MPH (This was the goal of my build, I wanted more touring torque).
Maybe I am leaving a few HP and a couple foot pounds of torque on the table but it's not much. Drag racing was not my goal. It was a bike that tours well and runs well. I got that in spades. The extra performance was a bonus. These Harley motors are pretty simple things to build and tune. They remind me of VW motors that I first learned how to rebuild when I was a kid. It's not like you are tuning a modern high performance V8. What makes them go is well known. There is no secret sauce. Of course if you want to believe there is fine by me.
I just did a similar job several weeks ago. Cams, lifters and push rods. I received a map from a forum member and honestly the bike seems to run great. Doesn't seem to get the best gas mileage but then again it seemed like it never did with the stage 1 previously.
It's going on the dyno Tuesday. I dyno guy is highly recommended so will see how it turns out. I'll post back with my results.
It's going on the dyno Tuesday. I dyno guy is highly recommended so will see how it turns out. I'll post back with my results.
Outstanding HDF Member
Joined: Jan 2007
Posts: 2,598
Likes: 19
From: Naples FL / Pine TWP PA
A lot of guys like taking it out of closed loop mode for performance in the cruise range which causes poor gas mileage. Keep it in closed loop mode in the cruise range and just tweak the 02 sensor bias voltage to get the AFR you desire while cruising. I set mine 02 sensor voltage just high enough to keep the heads cool going down the interstate. I run right at about 260 head temp and I'm getting 49MPG interstate cruising.
Ultimate HDF Member
Joined: May 2008
Posts: 7,439
Likes: 884
From: 'Noke, VA
I'm curious to see what your thoughts are on the difference in feel.
I'll post back for sure. I'm curious what the results will be too. Honestly the bike seems to run great, pulls great and sounds great too.
Will it be that much better after the dyno tune? At least I'll have piece of mind it's been dialed in perfectly.
I found the dyno guy from a post here on the forum then did some local research. Seems like the real deal. He was booked 5 weeks out as well.
Will it be that much better after the dyno tune? At least I'll have piece of mind it's been dialed in perfectly.
I found the dyno guy from a post here on the forum then did some local research. Seems like the real deal. He was booked 5 weeks out as well.
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Ultimate HDF Member
Joined: Mar 2012
Posts: 6,129
Likes: 143
From: Santa Cruz
I have the Screaming Eagle super race tuner for the bike from the exhaust and a/c install. I read for an upgrade of just cams that don't require different springs or head work.. (bolt-in cam) a dyno could be a waste of money and hard on the engine. I don't necessarily totally agree with that. I'm not worried about the cost end of it, just want to get the best outcome. The service manager at the HD shop didn't even suggest a dyno test to me, I had to request it.
Road Warrior
Joined: Jun 2010
Posts: 1,368
Likes: 27
From: Australia
I'll tell you what I have had two dyno tunes and my road tune is better than both of the tunes off the dyno.
1. I don't ping at all, ever.
2. I get right about 49 MPG at 75 MPH.
3. If I hammer the throttle in first gear I lift the front wheel.
4. I walk away from CVO 110 bikes.
6. I cruise through the mountains without ever leaving 6th gear all the way down to 60 MPH (This was the goal of my build, I wanted more touring torque).
Maybe I am leaving a few HP and a couple foot pounds of torque on the table but it's not much. Drag racing was not my goal. It was a bike that tours well and runs well. I got that in spades. The extra performance was a bonus. These Harley motors are pretty simple things to build and tune. They remind me of VW motors that I first learned how to rebuild when I was a kid. It's not like you are tuning a modern high performance V8. What makes them go is well known. There is no secret sauce. Of course if you want to believe there is fine by me.
1. I don't ping at all, ever.
2. I get right about 49 MPG at 75 MPH.
3. If I hammer the throttle in first gear I lift the front wheel.
4. I walk away from CVO 110 bikes.
6. I cruise through the mountains without ever leaving 6th gear all the way down to 60 MPH (This was the goal of my build, I wanted more touring torque).
Maybe I am leaving a few HP and a couple foot pounds of torque on the table but it's not much. Drag racing was not my goal. It was a bike that tours well and runs well. I got that in spades. The extra performance was a bonus. These Harley motors are pretty simple things to build and tune. They remind me of VW motors that I first learned how to rebuild when I was a kid. It's not like you are tuning a modern high performance V8. What makes them go is well known. There is no secret sauce. Of course if you want to believe there is fine by me.
Good post FX4, these bikes not a space shuttle, and all the hype makes it easy to be a bit lighter in the wallet
Thanks
Mirrmu