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That's funny because I have 1 7/8" Kooks race headers on a 4th gen drag car with over 650 fwhp & talked to a guy from Kooks @ super Summit about going to 2" headers & he told me don't waste my money it won't be any faster.
He also said until you get near 1,000 fwhp you don't need them unless you're just dyno racing, this comes from someone who could have sold me a set of headers that cost over $1,000 & I really appreciate his honesty.
My take is 2" is OK if you don't have headers or 1 3/4 but not worth going from 1 7/8 to 2"
I think he was referring to the people who get on here any say 1.75 is plenty for a bolt on car and anything larger will lose power. That simply not the case, he didn't make any reference to the notion that 2" will provide significant gains over 1-7/8
Little update. Tonight removed the passenger header and my fix and one I was comfortable with was putting a slight dent in the header. About 3 hits and was done.
10.86 126 mph cam only deal. Now new set up that I changed, new tick cam, ported super Vic 4150 accufab throttle body,nitrous outlet puck and the 2 inch headers. All threw the stock 6 speed with monster 11 inch clutch and all MWC suspension. Goal is to go 9s banging gears.
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