I received and installed my Free Power Electronic Throttle Controller which I purchased here : http://twptrade.com/autoparts/ with the model specific harness 2a for my xD. I hadn't see a review on the forums so I thought I'd provide some info.
TLDR version: Very happy with purchase worth the money.

Basically it give you the ability to modulate the responsiveness of your throttle. There are 3 modes economy(7 levels), normal, sport(9 levels). I bought it for sport mode of course In sport mode the throttle response is very fast! Level 9 is just crazy. It removes the annoying lag between putting your foot down and waiting for the throttle to actually open fully. Economy makes the throttle very slow to open up in comparision to how far you depress the pedal so you can modulate your speed very precisely. I didn't spend much time with that though, sport was just to fun!
Obviously, you don't get any extra hp from this mod but it felt faster off the line for me.

It took about 15min to install and tuck all the wiring away nicely. It plugs into the OBDll port and into the wiring on the gas pedal. You have to undo 2 screws and a clip to remove the plastic cover hiding the wiring on the gas pedal. No engine warning lights came on.

I spent a hour or so zooming around and it was incredibly fun to fool around with the different settings it deffinatly made it feel faster!
If anyone would like to know more I will try to answer any of your questions, but I highly recommended you check this product out, it is FUN!

Sorry I don't have pictures

 

I heard positive about throttle response systems but not tryn to bash you but this thread never happen without pictures ... and a vid would be nice lol

 

Ok Never uploaded pictures before and I used my cellphone camera hopefully this works.
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i use to have the older version,i loved it at first,but after awhile i got bored of it,missed the stock settings,but then again i have a light weight flywheel,so i have no lag,

 

I have this in my tc and when I first got it I loved it and then it kind of became just like normal to me so j tried not using it anymore but you could defiantly tell there was a difference so I just left it in and I keep it on the highest setting which is sp7 for mine


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Mine let's me drift.

 

then drift yourself onto the ignorant comment section

 

This thing really works that well?

 

Pretty much, all it does is change how the throttle responds. Their is no actual gain in performance though.

 

Yea there's a lot of good reviews on these things on other cars. I heard its a great investment. Ima add it to my todo mods list

 

I'm boosted so anything that will shorten my throttle response without screwing up my ride is a plus. Whats the link to this product?

 

You won't notice anything really if your boosted really.. people will feel it more when your n/a

 

yeah there is no added performance with this product all it does is lets says when you push your pedal 10% the way down, normally it'll open the throttle body 10% well lets say you have this set on SP3 then maybe it'll open your throttle body 15% and so forth so basically you are just accelerating faster making it feel like more power but at WOT its the same

 

I still enjoy mine, glad I got it. The economy settings may help you save gas though?

 

idk anything about eco settings as i leave mine in SP7 all the time

 

Yea i had this on my tc before i totaled it. I used the eco mode when i was low on gas if you have a heavy foot and floor it or press hard on the pedal the eco mode will kinda slow that down. If you press it 50% of the way itll be like 25% on a certain mode. I liked it

 

Will this void warranties?

 

It won't if you take it out before you bring it to the dealer.