Screamin' Eagle ECM reflash advice
How is it hit and miss? The person who is doing the dyno tune knows about air/fuel, timing etc. Why would you put a stock MAP (every bike is different) into a bike and trust it? Would you do that in a car? I certainly wouldn't and I wouldn't do it in a bike. I'm not trying to buy a new motor. I put it in the hands of a professional that tunes bikes daily. Find my post about my dyno tune. You'll see my a/f was all over the place. A simple tune on a stock bike could yield good results. I'd spend the coin to get my bike running right. I didn't pay $500 either. That's all I'm saying.
Stellar HDF Member
Joined: Jun 2011
Posts: 2,158
Likes: 35
From: Gulf Breeze, FL
I would go w/ a dyno tune and have it done right. I had Rineharts and the Screaming Eagle heavy breather and I had a stock MAP installed and it ran like ****. Got it dynoed tuned two weeks ago and the tuner said the other dealership turned off the O2 sensors in the stock MAP. Air fuel was all over the place which is why I had surging on the highway etc. I picked up 8hp and 5tq w/ the dyno tune. I'm a car guy and anytime I did upgrades I had it tuned. It's the only way to know your bike is running the way it should. Oh and check out Kutter Harley if you want a tuner. They'll beat your local dealership and ship free. Guaranteed!
How is it hit and miss? The person who is doing the dyno tune knows about air/fuel, timing etc. Why would you put a stock MAP (every bike is different) into a bike and trust it? Would you do that in a car? I certainly wouldn't and I wouldn't do it in a bike. I'm not trying to buy a new motor. I put it in the hands of a professional that tunes bikes daily. Find my post about my dyno tune. You'll see my a/f was all over the place. A simple tune on a stock bike could yield good results. I'd spend the coin to get my bike running right. I didn't pay $500 either. That's all I'm saying.
Why do you think you are limited to a stock map? The tuner is just as capable in your hands as it is in the hands of your so called "professional". If you bought a quality tuner then paid a dyno operator at least twice you most certainly had $500 or better invested.
Last edited by rickss69; Jun 22, 2013 at 06:31 AM.
You clearly stated another dealer/dyno operator tuned the bike the first time and you had to take it to another...that is hit or miss in my book.
Why do you think you are limited to a stock map? The tuner is just as capable in your hands as it is in the hands of your so called "professional". If you bought a quality tuner then paid a dyno operator at least twice you most certainly had $500 or better invested.
Why do you think you are limited to a stock map? The tuner is just as capable in your hands as it is in the hands of your so called "professional". If you bought a quality tuner then paid a dyno operator at least twice you most certainly had $500 or better invested.
Stellar HDF Member
Joined: Jun 2011
Posts: 2,158
Likes: 35
From: Gulf Breeze, FL
I clearly stated the first dealer just installed a stock MAP. I didn't say I had it dyno tuned by them. You misread that. Clear things up? That is why I had to have it dyno tuned because they never tuned it. Just having a stock MAP installed (or a canned tune when dealing w/ a car) is like a ticking time bomb. You really have no idea what you're dealing with unless it's tuned on a dyno. I've dealt w/ supercharged motors where this has to be done to get it running correctly so it doesn't lean out and then you're dealing w/ a blown motor. I'm still learning about motorcycles and tuning etc but it still can't be good on a motor riding it around w/ it lean/pig rich. You'll get crappy gas mileage like I was getting w/ mine. I gained almost 20 miles out of a tank of gas w/ my dyno tune that you feel isn't necessary. It's all up to the individual. I'd prefer to be riding a bike that has the crisp throttle response it's supposed to. These days if you change an intake on a bike and your pipes you're going to change the way the computer runs. It's just piece of mind in my book. Below is the result of my dyno tune. Look at the air fuel ratio. It's all over the place with the "stock MAP" that you would just put in and not worry about.
Last edited by rickss69; Jun 22, 2013 at 02:10 PM.
Your problem stems from the fact you let someone else do it for you. If you have the tuner you could have punched in the numbers yourself and known exactly what you had. Nothing wrong with eliminating the O2's, but you have to have the correct numbers assigned in the tables. If you use a stock H-D map it will be too lean at cruise and pig rich up top.
Which goes right back to why I had it dyno tuned. You can't know w/ out putting the bike on the dyno what you're actually getting w/ air/fuel etc. I'm not a tuner. I know nothing about tuning a bike aside from the basics and know nothing about the Screaming Eagle tuner. Therefore...wait for it...wait for it...I let the professionals deal w/ that. The ones that do it day in day out and probably know what they're doing more than I do. If throwing in a tune and calling it good without a dyno tune is what you want to do is fine by me. Not my bike though. I don't have a lot of knowledge on bikes but I know a bit about cars and guys that have done what you talk about w/ out dyno tuning have ruined their motors. I'm not sure if a motorcycle is the same way (but I don't see why it wouldn't be) but I'm not taking the chance of ruining my motor w/ out a dyno tune. Plain and simple. You have your methods. I have mine. I'll pay for the tune for piece of mind.
Stellar HDF Member
Joined: Jun 2011
Posts: 2,158
Likes: 35
From: Gulf Breeze, FL
Which goes right back to why I had it dyno tuned. You can't know w/ out putting the bike on the dyno what you're actually getting w/ air/fuel etc. I'm not a tuner. I know nothing about tuning a bike aside from the basics and know nothing about the Screaming Eagle tuner. Therefore...wait for it...wait for it...I let the professionals deal w/ that. The ones that do it day in day out and probably know what they're doing more than I do. If throwing in a tune and calling it good without a dyno tune is what you want to do is fine by me. Not my bike though. I don't have a lot of knowledge on bikes but I know a bit about cars and guys that have done what you talk about w/ out dyno tuning have ruined their motors. I'm not sure if a motorcycle is the same way (but I don't see why it wouldn't be) but I'm not taking the chance of ruining my motor w/ out a dyno tune. Plain and simple. You have your methods. I have mine. I'll pay for the tune for piece of mind.
I'm not going to argue or stoop to the name calling game. Let's agree to disagree. I'm going to stick w/ what I know and you stick w/ what you know. Hopefully others don't just take a MAP from someone and put it in their bike and call it good.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
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
Thread
Thread Starter
Forum
Replies
Last Post