before you make your purchase, may I suggest you do some comparison shopping?
be sure to research the EFIE (which would be a better starting point, especially if you're already grooved) and MAP Enhancer.
I'm Grooved and have applied his suggestion to my MAP, in addition to having relocating it per Ron's suggestion. I've been wanting to find the time to install the EFIE to complete the full mod, but, weather/winter/life/work...soon though. REALLY!!
It's long, but you can see my progress on my megathread of what I've done to my vehicle (which celebrates it's 3rd birthday today!!):
The Groove has been the biggest factor in my car. And now, 3 years later, I’m still finding ways to take those results a bit farther. And I’m reporting my results as I realize them.
I’m saying that you might achieve greater/more (consistent) gains beyond what the groove has done by taking greater control of your computer with an EFIE adjusting how the computer interprets the O2 levels in your exhaust. I’m also saying that by compensating for the groove with a similar modification to my car’s MAP sensor signal, I’ve also achieved a slightly higher level of fuel efficiency with no perceptible effect on performance.
The link is in my first reply, Eagle-research.com. George Wiseman is a recognized energy saving authority, from hydrogen enhancement of engines that burn hydrocarbons (and how to compensate for/tweak how your car’s computer interprets sensor signals outside of what it’s been programmed to look for) to electrical power to even health care/life enhancement. The HyZor I encourage you to compare to the expensive and complicated Aquawhatever system has links to resources where you can learn about EFIE and MAP.
Do your own research, but I can say that the MAP relocation (as Ron suggested here) and adjusting the signal with a mod from that site has further enhanced my results from the Groove, as I believe adding EFIE will as well.
The following user(s) said Thank You: Michael Lee, CLAUDIO CORDOVA, Simon Burdett