Thread: gt40r on built b20vtec needs more power
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Old Jul 23, 2009 | 02:57 AM
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Default Re: gt40r on built b20vtec needs more power
Originally Posted by lamonte619
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i have a built b20vtec with a garrett gt40r turbo and i made 420hp and 300tq on 21 lbs on a mustang dyno today. i wanna know why the turbo stops making power after 7000. the turbo has a .95 t4 ar. and i am running skunk2 pro2 cams. with like 9.1 compression. i am aiming for 500hp. is this a common thing with this turbo. boost doesnt fall but power does. please please PLEASE HELP ASAP. THANKS
Whose doing the tuning?
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