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the roush blower is a piece of junk, at least with the stock pulley. 450rwhp is absolutely fine on a 3v 4.6 and the roushes are making probably 70rwhp LESS than that.
The blowers aren't horrible it’s just that Roush tunes the car VERY conservative. You have to remember these cars come with a warranty and Roush doesn't want to be replacing engines all the time. They already know people are going to be racing them so it’s easier to pull some timing and fatten the A/F and have a super safe tune. A guy where I'm from has one just like the one posted, minus the blue seats, and he picked up like 50rwhp with a tune. He also has a P-51 which is bad ass, not for the money it cost but looks sweet. LOL
Now I 'm not saying a Whipple or KB isn't better even the Saleen Blower is better than the Roush.
