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I just thought of a fun little experiment to see who makes the best converters. Could be done kinda like an engine masters thing. Get 5 fairly different proven combos of cars even different brands and have one converter sent from each converter maker for each car then get to racing and swapping converters and see whos run faster on average the first time out

Also be fun to do a camshaft competition in a similar format and compare cams from different makers useing their recomendations.

I doubt that would prove which is the best. like Monte said it's a matter of who gets it the closest the first try. there are many quality converters but very few that can take numbers and build a converter thats right the first try. and really there is know way of knowing if it can't be improved on whith an adjustment. it's not an exact science, people usally guess what kind of power and torque they are making or get bad dyno numbers that causes problems.