The stage 1 download raises the rev limiter from 5500 to 6200rpm. It has a more aggressive timing advance curve except at high RPM low throttle conditions where it drops the timing sharply to eliminate decel pop. It also raise the bias voltage on the narrow band O2 sensors. But it still has a target AFR of 14.6-1. They raise the bias voltage because the narrow band sensors change the voltage to the ECM. But they can only adjust it so far. By raising the bias voltage it gives it the ability to keep the AFR on target. Without raising it the ECM wont be able to adjust the AFR enough to compensate for a freer breathing engine after AC and muffler changes are done. However the stage 1 download is a canned tune tuned for HD AC's and street legal Scremin Eagle mufflers with the stock headpipe. With that said you don't need the download until you change the AC. if you only change to a K&N filter you still wont need it. The Rushmore 14's already come with a washable low restriction filter. I dont know if a K&N will gain you much if anything.

 

There are many, many threads on this subject dating back several years.

Are you actually looking for good advice or just comments to justify the course you've already taken?

Where did you hear that? Do you have any documentation that the model year 2014 is leaner then previous years?

Why do you want to richen it up? Do you know where in the hundreds of cells that richening would meet your needs?

If your answer is to cool down the bike, you're misguided with respect to how much cooling you'll achieve from a richer setting.


Don't mean to bust your chops...what issues are you having that has lead you to consider a change in the tuning tables?

 

The 2014 models have gone back to using bias voltages?

Really???

 

Well Greg you lost me there. Seems I remember reading such as the Xied you want a reading of some where's around the 13.5 range for a slightly richer mixture?
Are you sure about the washable air filter?? Looks like paper and didn't see in the manual about washable. Not looking to gain anything just a filter I can wash and treat like all my vehicles and not spend $25 a year for a filter.

Really sick of hearing "you spent 26K on a bike" don't cheap out on a few more thousand to make it run better. It runs awesome and plenty fast the way it is. It will destroy a stock 96, just looking for a little heat loss, that's all.

 

[quote=Just Me;12222585]Well Greg you lost me there. Seems I remember reading such as the Xied you want a reading of some where's around the 13.5 range for a slightly richer mixture?
Are you sure about the washable air filter?? Looks like paper and didn't see in the manual about washable. Not looking to gain anything just a filter I can wash and treat like all my vehicles and not spend $25 a year for a filter.

The Xieds do try to richen the mixture to the mid to high 13's to 1. That is to cool the engine. The EPA requires new Vehicles to run at 14.6:1. That is the ratio that the fuel burns completely reducing pollution. But it also burns hotter. Lowering the ratio is suppose to cool the combustion chambers. That's what the Xieds do by adding resistance to the line between the O2 sensor and the ECM. By adding resistance it makes the ECM think the engine is running leaner so it adds more fuel.

The dealer told me that the filters are low restriction washable filters. They are like the ones that come with the Sreamin Eagle stage 1 air cleaners. Unlike the K&N you don't oil the Harley washable filters.

 

Here is a link to an article on the different Harley downloads that includes the download tables and an expination of what they actually do. http://tuneyourharley.com/biketech/c...l-map-revealed

You have to have a bias voltage from the ECM that goes to the O2 sensors. All the O2 sensor does is change the resistance of the circuit as the AFR changes. The change in resistance changes the voltage that is returned to the ECM. The ECM reads the voltage coming back to it and adjust the AFR to try and keep the voltage steady at where it's suppose to be for a reading of 14.6:1.

 

[QUOTE]Really sick of hearing "you spent 26K on a bike" don't cheap out on a few more thousand to make it run better. [QUOTE]

You an me too brother. I work hard for my money and just plain can't afford to spend 2K on intake/exhaust/tuner/dyno this time around.I went from ViEDs to a stage one down load and am pretty happy with it but I doubt it'll solve your heat issue.I have a decatted head pipe, tank lift stage one down load and tried Vieds but grew tired of constantly fussing with them.The biggest reduction in heat came from installing highway pegs and getting my legs away from the heat source.Now my stock football AC cover on my Ness Intake is trapping heat, that'll be the next thing to go.And no I can't afford $300+ for fans either.

 

Had the HD stage one download done to my 14 Limited. Installed the HD street cannon slip ons and SE ventillator air cleaner. Runs great. Made the throttle a bit more touchy. I have plenty of power. No pinging or heat issues, of course the engine has water cooled heads. IMHO the fuel mix is good. I have no need or desire to dyno tune. This bike runs better than my last bike and it was a 07 SE ultra 110 that was dyno tuned.

 

Actually the stage 1 download without a/c & slip-ons may help some but no matter how much you want to fight and not believe, a proper flash turner and dyno tune is the only way to get proper performance, including heat reduction.

 

Oh I'm with ya, but I'll be dammed if I'm going to spend $1500 bucks on all that for some heat reduction. Extra performance is always nice but don't need it. Guess it is what it is.......