
Originally Posted by
niky
Which one did you see on tsikot?
There's only one for sale locally, Devil's Own, and it has been proven on the dyno to really work.
Problem is, it takes experimentation and tuning to find the best alcohol mixture, nozzle size and activation point or curve. Worst case scenario, you only gain 5 hp, which isn't very noticeable, on non-turbo vehicles or vehicles with low-pressure turbos and with the weakest mixture (which is pure water)... Best case scenario, about 20-30 hp, with tuning, on a high pressure system.
But, like I said, it takes a lot of fiddling to get best results. I'm not too happy with the results on my turbo Crosswind. The dyno shows gains, but they're small (5 hp, but all throughout). That's because my turbo makes a pathetic 5-6 psi of boost. On other diesel turbos, which can do up to 30-40 psi, the gains are much greater.
I have a Unichip on my gasoline Lynx. Biggest bang for the buck modification I've ever done. About 10-20 hp gains all throughout the powerband (on a 140 hp motor, that's immense), and the midrange gains it gives you makes you much faster than an unchipped car in the real world. I got mine at Speedlab.
There are many different chips, and some of the UK ones are terrific, but if I were you, I'd pick one with local tech support, so you can have it fixed or adjusted if you're unhappy with it. The cheapest locally for diesels (that actually work and are backed by testing) are the VTECH Redbox and the Unichip.