Any luck finding a local dyno shop there in the UK?
Still awaiting delivery of the product. I have a military APO address so I have to be patient, some things arrive in a week, others take months, lol. I have found some Dyno's around England but will contact them once I receive the parts and see which ones will let me do a run (Pause to remove the upper intake manifold to change the plugs out+reinstall the manifold) then do run number two. I want to do it all at the same time so I can have an accurate file to post online. This is a new untested try-valve product so the company, nor myself knows what to expect. At least I am willing to do this, whether I'm right or wrong about performance increase, it's better than the 98% of people on here just trying to disprove something they've never used, or heard of. A bunch of 'Know-it-alls' whom if they didn't see it on American Muscle, then they wouldn't buy it, or even know about it...
You only have one wheel? Typically, your RWHP increase is at the rear wheels.Those plugs are no good. Thin oil and tornado intakes don't work either. The trick is pure nitrogen in your tires. When I made that switch I got 33 mpg in the city and 46 mpg on the highway. My horse power increased by 50 at the rear wheel. I know it works because Nascar uses it. I get my pure nitrogen from my compressor. It's free that way ,, my neighbor told me that.