I ran the XiEDS on my '07 RK for about a year and a half, with Arlen Ness big sucker, V&H monster ovals and always 93 octane pur gas,no corn squeezin's..
They somewhat quelled the rattling in the motor, but it wasn't until I got a fuel management tuner (V&H Fuel Pak for the 2007 RK) did it really quiet down and get right with a noticeable bit better performance.
I thought about the big bucks for the Thundermax,but I don't plan on building a monster machine, so the $261 Fuel Pak worked fine for me.
I also installed some Wards Werks Cooling Fans, the snap switch for them, WP160 oil thermostat which are working very,very well for keeping the motor at a reasonable temperature during this excessively hot summer.
I still am going to get the Cap'n Itch flap cooler for the rear cylinder, to spare my inner thigh some roasting.

 

Did you notice any difference in the ping while running seafoam? I run one ounce per gallon until the bottle is empty once a year. I swear my engine sounds different (better) when SF is in the tank.

 

I really didn't notice any difference running the seafoam

 

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They do mfg adj xieds that i read about on their website a while back,i believe they have 3 diff adj settings on them going from lean to a bit richer ,you need small jeweler type flat blade screw driver to adj them.

BTW,if fattening up his mixture a bit doesnt stop the detonation doing this should fix it for good with out having to retardad timing can reduce power and mpg if enough timing is removed to stop ping.

1) Run a 2 tanks fuel thru the motor using a healthy dose of chevron techron (concentrated version) of 1.5-1.75 oz techron per gal of fuel.

I rec that 1st because its good at removing excess carbon build up from combustion chambers,valves,pistons that can also increase compression a bit and or get red hot in cyls both of which add to to detonation issues.

2) 2nd is heat is also a contributor to detonation and we all know our lrg air colled hd motors are very good at creating excessive heat esp on warmer summer days.

Well you can put a good dent in that issue by installing Wards cooling fans along with a ultracool oil cooler with dual elec cooling fans.

I was having detonation issues along with lower oil pressure too on my basically stock 09 96" and when i did all the above starting with the techron in concentrated carbon cleaning 1st that reduced detonation a bit and also made engine run smoother & better along with picking up an additional 1.5-2mpg on avg too.

Bought the bike used 11/2014 with approx 9,700 miles on it with as far as i knew never having EFI /injectors and or comb chambers cleaned of carbon which is why it responded well to the techron (concentrated version) clean up.

Then to address the excessive heat that i had a feeling was the root cause of the detonation my bike was still having i installed the 2 cooling system mods at the same time & after doing that the oil temp was reduced 50+ deg & detonation is now a thing of the past on rec 91 oct fuel and the motor now retains much better/higher oil pressure on hot days too. (Valve train is also quieter too because oil isnt thinned as much allowing the motor to retain better/higher oil pressure on hot days too)

As far as reducing detonation goes i think the techron in concentrated version cleaned up/removed excess carbon from the comb chambers maybe reducing compression a bit & or removed excess flacky carbon deposits that could get red hot both of which can cause detonation.

Then installing the 2 cooling mods working collectively together reduced oil temp over 50 deg and the result of that was " no more detonation on hot day " when i went back to cheaper lower octane 91 fuel HD rec's for my bike vs the higher price premium 93 fuel i used to run to just reduce the detonation a bit never stopping when i haddent yet done all the above to my bike.

And to add to that oil pressure on hot days went from 8-10psi @ idle & 32-35psi @ cruise before i installed the 2 cooling mods to now 16-17 psi @ idle & 46-48psi at cruise after installing the 2 cooling mods & also doing the techron clean up (concentrated version) as i rec above.

I have an oil temp gauge which is how i tracked oil temp pre/post cooling mod install but unfortunately i dont have an engine temp setup of any kind .

But oil temp running 50+ deg cooler on hot days with the 2 cooling mods installed has to of at the same reduced engine temp too , but by just how much i dont know.

But the fact is the engine/oil temp was lowered enough along with the techron carbon cleanup that all collectively working together completely eliminated the detonation my bike had.

BTW,Chevron rec's running the concentrated version every 3k miles which i found to be about right and is what i follow with my efi cars and efi bike which great results.

Scott

 

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Seafoam is a pretty decent product but it has its limits.

You get what you pay for and i have found using a more expensive robust / stronger solvent like Chevron Techron in concentrated version does a better job of cleaning carbs/injectors/fuel systems & carbon from comb chambers valves/pistons which is why i rec it.

But seafoam has it place,i actually have some seafoam and techron on hand and use 1 or the other depending on lvl of cleaning required at the time.

Scott

 

I had similar results with VIEDS so I sold mine and went with a Powervision tuner and very pleased with the results. You may want to try a Microtuner from Fuelmoto if you can't step up to the PV.

 

Almost assuredly the pics below are what you pistons look like.

You can retard the timing and it will solve the pinging temporarily. Then as more carbon builds up from the hot, oily, oxygen depleted air going into your air cleaner, you will need to retard it even further.

Best to deal with the cause, rather than applying a band-aid (retarding the timing). Get an External Breather system on there.

For your stock A/C, either one of the DIY kits at this LINK will work.

 

If you are running xieds, and it still pings, then try an octane booster before you spend any big dollars on tuners, etc.Octane rating dictates how much resistance to detonation that fuel will have. These engines need premium fuel. Around where I live, 91 octane is about the best you'll find, and it mostly works ok.92 would be better, and of course 93 better yet.use it according to directions, as too much will only waste your money. If it helps, then try finding a higher octane than what you are running. BTW, what grade fuel do you usually run? If it doesn't help, then you might need to back off the ignition advance a degree or more.

 

What exactly is an AC external breather? What is it for?

 

Will share my experience with you, also have a 2012 Limited and couldn't tolerate the ever increasing pinging, went the XIED route, octane boosters, Sea Foam, on and on and some worked for a week or two and always back to the pinging. To make matters worse we pull a trailer on the longer trips so we had a month long trip planned and decided to buy the Power Vision and air cleaner from Fuel Moto, already have Rush slip ons. We just got back from a 28 day, 8,635 mile , 21 state trip that included almost all the higher elevation rides, also we did an Iron Butt 1,000 the first day pulling a trailer and I will tell you that the PV from Fuel Moto is by far the best product you can buy to give you real satisfaction in all/or many climate conditions. I did the auto tune pulling the trailer in lower elevations and high also, then retarded the timing 3 degrees and increased fuel 3 percent global , pinging is non existent even with low grade fuel and the performance is eye opening !! My advise is do the air cleaner and PV from Fuel Moto and put your frustration behind you !!