I'm not saying the XEID's are a cure all but for a tight budget they sure did cool down the engine and make it run a lot better even with the open A/C and slip ons

 

They can only do that while in closed loop which is mostly cruising speed and part throttle. Once your in open loop then your back to stock. I'm not disputing that they are better than nothing but your almost half way to a tuner in expense and your not really fixing the problem correctly. If it where me I would rather spend the money and do it right the first time.

 

I wouldn't invest in a tuner unless I also invested in a good dyno tune. If your going to do it right, do it right. Now the Xied's are about 1/6th of the cost of that combination.

 

I'm kind of on the fence here as well:
Do any former XIED users think they did NOT get a good value when they upgraded to a tuner? (i.e. bang for the buck) Do you wish you would have kept the sensor resistors and spent your money on beer or maybe a new shotgun?

 

What is value? Every upgrade including the XEID's are way overpriced.

I still remember the sign as a kid in the local speed shop...
How fast do you want to go? How much cash do you have.

Every bike is different even if it is the same year and motor. XEID's work for my bike but you may not like them. I still believe a properly set up tuner is better. If you buy a tuner and one of the canned maps don't work, you have to be commited to a great dyno tuner. Only with the tuner and an expert dyno tuner can you guarantee you will get the most out of your bike. For now, I just wanted to add fuel and get a little kick out of it. Even if I dump the XEID's after 2 years (when the warranty is out) it was worth 100 bucks to have a cooler running motor in this 100 degree weather. If I do have a warranty issue I can take the XEID's off 10 minutes before I take it to the dealer

 

so what should i go with if i do the v/h short shots. i will need to do the a/c and a tuner thing. i dont want to keep messing with it as far as all the different downloads go. will it hurt to just run the pipes and wait for the a/c? what would be the downside to doing the pipes and a/c then saving for the tuner while i enjoy what ive already done? thats how i did my truck. how is the bike different?

 

I ran with just pipe and no A/C or fuel management for almost 2 years. No problem at all. I just did the A/C and Power Vision. I like it, but I don't know how much difference there really is from just doing the pipes.

Do the pipes and if you are happy with that just leave it.

 

Xied= O2 sensor on these bikes are narrow band that read 0 to 1 volt. 1 volt being rich and 0 being lean. in rough terms .1 to .9 volts is 14:1 to 15:1 ratio. The xied's by percentage change the reading the ecu is looking for .5ish to actually be a .8ish roughly output from sensor with a .5ish voltage reading to ecu. TTS you are able to change the voltage it looks for resulting in a slightly richer closed loop AFR.
If the narrow band sensor goes to 1 volt it is no longer reading accept saying is richer then target and will set a code, which some will see with a higher target value in TTS. This is due to a less room for error in the AFR tune. As for Xied's I am uncertain if the ecu would ever get a 1volt signal. Boolean logic in the map may find error with xied's on the too rich side but I am uncertain.Example narrow band is at 1volt xied sends .8 to ecu, map leans to see change and there is none trips code for sensor. Have not viewed the boolean logic for codes so am guessing.

Stock maps= You are in closed loop in idle and most loads. Times in open loop gets complicated but the rough of it is at start up for given time, heavy loads (WOT and lugging) In the open loop sections it is not mapped to be 14:1 ratio they are around 13.5:1 and down as low to 12.5:1. With boolean logic adding percentage's with different readings/tables met.

What this means= yes in most cases you could get away without a change in mapping for air cleaner and exhaust changes. Changes could cause a leaner open loop map but not enough to cause issue. If the modifications done do not cause lean/rich codes in normal closed loop riding the open loop sections will be plenty rich.
This applies to 06 and up dynas, 07 and up rest of hd's.

Want to cool engine temps= Can be done in multiple ways.
Richen the cloosed loop sections. 13.8:1 is a decent ratio but not likely with narrow band sensors. Closed loop systems able to do that are Tmax and Daytona Twin Tech TCFI systems, maybe some others. TTS, Xied, PCIII etc that still utilize the narrow bands can be altered closer to 14.2:1 vs stoich 14.7:1.
Add a oil cooler, some testing shows full synthetic oil can lower temps. There are other engine changes such as cam choice but then it is very unlikely a stock map will work.