Kaizen Tuning huge recommendation
 

Anyone who has dealt with these guys just outside Boston will know.
I had some issues with an HKS product that they went to bat for me on and the end result is they came thru when I expected to be left high and dry. Being outside the US, I could have easily been ignored but wasn't.
Anyone considering their actual shop services should Google them and ook on Google maps street view walk thru of their shop. They have an impressive facility to say the least.
HKS recommends them as a dealer and installers/tuners of choice.

I recommend them too and if they read this- many thanks!!!