MI5 Persecution: Latest technology 31/7/96 (2779)

From : Annonymous

Q: wasnt there a test a few years ago with the cummins and a bunch of filters iirc the stock filter produced more power than any of them. ive been looking and cant seem to find it. i believe youre thinking of the test that joe donnelly did where he compared dyno numbers between several aftermarket filters stock filter and no filter and found no discernable hp differences between them. that was a lot of years ago and didnt go beyond 400 hp on the cummins. i rode in donnellys truck when hed detuned it to 380 hp for towing very impressive. i know he ultimately hit 800 hp before he detuned it and sold it i wish id gotten a ride then. .