Overview of EFI options..XiED, Piggy-back, Flash Tuners, Dyno Tuning, Etc.

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Overview of EFI options..XiED, Piggy-back, Flash Tuners, Dyno Tuning, Etc.

There are a variety of methods to "adjust" the EFI on our Harley's.

What I want to accomplish with this post is an overview of the variety of options available, so that people can make an informed decision, based on their needs, desires and budget.

This is by no means a complete list of all options, but it does encompass the most popular ways that are currently being used in Stage 1 upgrades.

It also does not delve into a lot of the technical data (and there is a bunch), it is an overview so that one can choose which path, or paths, they want to explore more fully.

There are basically five ways to go in the tuning arena of a Stage 1:

1. Do nothing. Many advocate that no tuning change is needed at all when adding free flowing mufflers and intake. The ECM will make necessary adjustments.

It is true that the ECM will make adjustments, and the bike will run. However, it will still be lean and probably even leaner than EPA requirements. It will run hotter, not accelerate as well, and may have hesitation in low speed situations.

There are many reports of people being very happy with this option.

This is the least expensive.

1.25 Dealership Download aka, a Stage 1 download. The download does NOT alter fuel enough to matter, but it DOES alter it a bit. Timing is not touched, and the rev limit is increased. When I say the fuel isn't touched enough...

EPA rules force the MOCO, with that download to STILL mimic the EPA approved amount of pollution , etc..

and therefore, the engine is kept very lean..

similar to the stock calibration.

It is better than option #1 and the fuel IS bumped a teeny bit.

Very expensive for the little you get.

2. Use an XiED product. Many are very happy with the improvement in cooling, reduction in pinging, hesitation, and generally smoother and stronger acceleration.

This is an excellent option for a stock bike, a bike with free flowing air cleaner or exhaust, or a bike with both free flowing air cleaner and exhaust. It uses the base tune from Harley-Davidson, and adds some fuel into the areas that HD had to lean out for EPA reasons. The results are a much better running bike.

However, if you are looking for the best possible performance, it does leave 10%-15% of the available power on the table. It is a budget solution that many are happy with, because to get that extra 10%-15%, one needs to speed 400% to 900% or more money.

This is second least expensive and the most benefit for $ spent.

2.5 The Fuelpak is a piggy back device in a category by itself. It adjusts the AFR in both open & closed loop. It does not adjust the timing at all. V&H Customer Support will give you codes based on what mods you have done to your bike that change the tune.

Many use the Fuelpak and are very happy with it. Others say their experience with it is very poor.

Since this option does not allow any adjustment of timing this can be good for stock bikes up to Stage 1.

It is over twice the cost of option #2 and just a little less than option #3. The difference being with option #3 you can adjust timing (on most) and have complete control over the tune.

3. Use a "piggy-back" tuner like the PCV.

These tuners can be used with a "canned" tune, or can be adjusted on a laptop computer or a Dyno. They override the Harley-Davidson tune and, if used properly, will deliver 100% of the available power.

Some do not like them because they sit on top of the HD ECM and in rare instances that can cause problems. However, in the right hands (a skilled person) they can give you a great tune, taking full advantage of all possible power.

This is the third least expensive and results can be great or poor, completely dependent on the quality and time put into the tune.

4. Use a full featured "flash" tuner like the TTS, SESPT, or Power Vision in conjunction with a Dyno. These tuners give you control over the ECM to get the best possible tune, delivering 100% of all available power. They do not override the HD tune, they actually change the tune in the ECM.

In the right (experienced & competent) hands, these will deliver the absolute best possible results. Unfortunately not only is this the most expensive route to go, there are 99 bad to mediocre people running dyno tunes for every truly competent person doing dyno tunes.

The cost of the tuner ($500-$600) and another $300- $1000 in dyno costs make this the most expensive option, with the possibility of not getting any better results than one would get with a "canned" tune.

This is the most expensive and can deliver the best results, or poor results, dependent on the person running the dyno.

5. Use a TTS or Power Vision with Auto-Tune.

This is the same "flash" tuner as option #4 above, but instead of spending $ on a Dyno tune, and possibly getting a poor tune due to the person doing the dyno tune...it uses the built-in computer to record how you ride, the conditions you ride in, and a variety of other factors, then the device makes changes accordingly, improving the tune every time you ride the bike.

This is a sure way to get 99%-100% of all the power available, and not have it rely on a person running the Dyno, that may or may not do a good job.

It also will adjust for any future modifications done to the bike without incurring any additional costs.

This is the second most expensive option and reliably delivers great tunes every time.

Kevin
 
Re: Overview of EFI options..XiED, Piggy-back, Flash Tuners, Dyno Tuning, Etc.

What about the Thunder Max tuner?
Butch
 
Re: Overview of EFI options..XiED, Piggy-back, Flash Tuners, Dyno Tuning, Etc.

Great review/information Kevin and my personal understanding of how each individual tuner functions. I have, at one time or another, tried most of the ones mentioned and have settled on the PV for both my bikes - i.e. the basic PV on my V-Rod Muscle and the PV w/Auto Tune on my Trike w/the 120r motor.

Am veryhappy with both installations, and I download esch ones map and modify it to my likeing and re-load. Both bikes are running awesome!!

Thanks again for the information, as I am sure it will benifit some of the members!!

Roger
 
Re: Overview of EFI options..XiED, Piggy-back, Flash Tuners, Dyno Tuning, Etc.

I was going to ask about the Thunder Max for this review, but someone beat me to it.

Couple small corrections. The IED's are cheaper than the Harley download. The download will typically cost $150 or more, the IED's can be had for under $100 delivered.

My info is different than yours on the download. We both agree that the rev limit is increased, however, according to my sources, timing is slightly retarded and the fuel map is not altered at all. Now I will say that my info is probably a couple years old and came directly from a Dealership that looked at a bike both before and after the download. This was what they found. I believe this was on a 2010 with the download they had at that time. AFAIK, it's the same download as is available today as the ECM is still Lambda based. This would probably not be true of the 2014 Water Buffalo's.
 
Re: Overview of EFI options..XiED, Piggy-back, Flash Tuners, Dyno Tuning, Etc.

XIED & any piggy back setup that only tricks the signal to the injector to spray more fuel without adjusting the fuel and timing for load is only asking to create problems unseen until the engine is torn down or the rider finds the engine is now running hot or hotter than before.

Just adding fuel will over time add more carbon in the cumbustion chamber which causes heat and increases the compression within. Additionally the front and rear cylinder fuel requirements and spark tables have to be adjusted individually based on load and rpms.

A piggyback setup is cheap up front but can cost you alot more in the long run. JMHO
 
Re: Overview of EFI options..XiED, Piggy-back, Flash Tuners, Dyno Tuning, Etc.

5. Use a TTS or Power Vision with Auto-Tune. This is the same "flash" tuner as option #4 above, but instead of spending $ on a Dyno tune, and possibly getting a poor tune due to the person doing the dyno tune...it uses the built-in computer to record how you ride, the conditions you ride in, and a variety of other factors, then the device makes changes accordingly, improving the tune every time you ride the bike.

Kevin

TTS doesn't auto tune, it doesn't have the ability to make changes while you ride. You have to either hook a lap top to it and run the V-Tune software or use the new flight recorder to record without a lap top. Once you get your recording you then have to accept VE changes it suggest. The major difference between the TTS and PV is the TTS requires more interaction but has more things a person can adjust to get a really great tune. I've looked at the PV software and it does do some nice stuff, which will satisfy a pretty broad group of people. But the TTS is in a league all to it self, Steve Cole just keeps adding more and more tools for the tuner to make significant improvements to the tune.
 
Re: Overview of EFI options..XiED, Piggy-back, Flash Tuners, Dyno Tuning, Etc.

What about the Thunder Max tuner?

Butch

Yes, there are a number of options for replacing the ECM that were not included in the overview.

I was going to ask about the Thunder Max for this review, but someone beat me to it.

Couple small corrections.

The IED's are cheaper than the Harley download. The download will typically cost $150 or more, the IED's can be had for under $100 delivered.

My info is different than yours on the download. We both agree that the rev limit is increased, however, according to my sources, timing is slightly retarded and the fuel map is not altered at all. Now I will say that my info is probably a couple years old and came directly from a Dealership that looked at a bike both before and after the download. This was what they found. I believe this was on a 2010 with the download they had at that time. AFAIK, it's the same download as is available today as the ECM is still Lambda based.

This would probably not be true of the 2014 Water Buffalo's.

Yes, our info on downloads is different, and with so many different downloads available, they are probably both accurate.

Regarding downloads-I have even seen dealerships do downloads meant for different engines to try and get a little better results.

XIED & any piggy back setup that only tricks the signal to the injector to spray more fuel without adjusting the fuel and timing for load is only asking to create problems unseen until the engine is torn down or the rider finds the engine is now running hot or hotter than before.

Just adding fuel will over time add more carbon in the cumbustion chamber which causes heat and increases the compression within.

Additionally the front and rear cylinder fuel requirements and spark tables have to be adjusted individually based on load and rpms.

A piggyback setup is cheap up front but can cost you alot more in the long run.

JMHO

:) Yes, there are many levels at which a person is satisfied that their bike is running "good enough" for them.

TTS doesn't auto tune, it doesn't have the ability to make changes while you ride.

You have to either hook a lap top to it and run the V-Tune software or use the new flight recorder to record without a lap top. Once you get your recording you then have to accept VE changes it suggest. The major difference between the TTS and PV is the TTS requires more interaction but has more things a person can adjust to get a really great tune. I've looked at the PV software and it does do some nice stuff, which will satisfy a pretty broad group of people. But the TTS is in a league all to it self, Steve Cole just keeps adding more and more tools for the tuner to make significant improvements to the tune.

True that. TTS does not "auto-tune" (make changes while you ride), neither does the Power Vision. But they both have the ability to log info while you ride and then they each have their own process where you can change the tune based on that logged info. This ability has been popularly referred to as auto-tuning.

******

The overview is meant to be just that, an objective overview of some of the more popular methods used to "adjust" the EFI on all EFI HD's, whether Sporty, Softail, Dyna, or Touring, being as this section is for all HD trikes. All methods have their pro's & con's.

I thought it would be good to have a list of options all in one place for a basic starting point in understanding the various options.
 
Re: Overview of EFI options..XiED, Piggy-back, Flash Tuners, Dyno Tuning, Etc.

Yes, there are a number of options for replacing the ECM that were not included in the overview.

Yes, our info on downloads is different, and with so many different downloads available, they are probably both accurate.

Regarding downloads-I have even seen dealerships do downloads meant for different engines to try and get a little better results.

:) Yes, there are many levels at which a person is satisfied that their bike is running "good enough" for them.

True that. TTS does not "auto-tune" (make changes while you ride), neither does the Power Vision. But they both have the ability to log info while you ride and then they each have their own process where you can change the tune based on that logged info. This ability has been popularly referred to as auto-tuning.

******

The overview is meant to be just that, an objective overview of some of the more popular methods used to "adjust" the EFI on all EFI HD's, whether Sporty, Softail, Dyna, or Touring, being as this section is for all HD trikes. All methods have their pro's & con's.

I thought it would be good to have a list of options all in one place for a basic starting point in understanding the various options.

The Power Vision does have autotune capabilities.

Your over view is biased based on price and is limited in overall definition of what each product is capable of. Yes the better systems cost more because they offer more. The better systems also require the end user to learn more.

Installing a cheap setup as i stated will throw more fuel in the short term will feel better, but does nothing to address the spark tables.

More carbon build up in the combustion chamber and exhaust port reduces the power of the engine in the long run.

Pick your poison, pay now or pay later.
 

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