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designing and fabing up an itb setup would not be hard at all. the problem lies with the lack of aftermarket support of camshafts. for an itb setup to function well you need some nasty bump sticks and lots of compression. other wise you could loose power. it is known that high rpm hp typically is lower with itb's due to the lack of helmholtz resonance to help "supercharge" the air fuel mixture. the main gain of itb's is typically nice fat tq and instant throttle response.
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