Racers, Revheads and Hoons take note, if you want that extra bit of horsepower, then one of these is for you. Don’t be fooled by the size of these little tackers.
They do a lot. So much so, that one has a 51 page user manual and a separate 151 pages of instructions on how to get the most out of your engine via tuning by programming and deep analysis.
I have tested both from a home mechanics perspective and called it as I've seen it. Good points, bad points and also judged the back up service by supplier.
How hard are they to hook up to different cars with and without OBD plugs, including my Ferrari and Supercharged 700hp AC Cobra?