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There have been more than a few dyno between 2" and 1 7/8" we're beating a dead horse. My issue is with fitment vs any small gain, and yes actual drivability, which favors the 1 and 7/8. I'd have to see 20 WHP gain by going to 2" due to the fitment problems and that ain't going to happen at my 709 WHP target, but assume 1000 WHP builds would see something like that.
IMO 99% of the people will be happy with 1 and 7/8. but would agree there is a few HP on the top end FBO with 2" and probably more max DD effort NA, max DD effort FI. Depending on how you define DD, I'm sure we all have 1000 WHP DD right.
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Forged short block, large duration sub .600 lift Cam Motion cam, 7200 RPM fuel cut, Pray Ported Heads, 3.85 pulley D1X, stage II intercooler, DSX secondary low side, DSX E85 sensor, Lingenfelter big bore 2.0 pump, ported front cats, 60608 Borla, LT4 injectors, ZL1 1LE driveshaft and Katech ported TB, ported MSD intake, BTR valvetrain, ARP studs, ProFlow valves, PS4 tires.
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