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Hi all i am currently tuning my r33 skyline with a vipec ecu and dont know alot about it. currently the car sits at 392 hp but no mater how much we try it wont go past it. im running a garrett t38 and 20 psi is making this number and it should only be half of this the car makes 400ft/lbs of tourque and the car is on full song by 3000 rpm and just seems to fade off. it has all supporting parts for at least 500hp but the car just wont jump over the 392 mark. very frustrating and wondering if anyone has ideas as wot could be causing this????? the car did a water pump on the dyno but no overheating occoured as the problem was found before any damage took place. i would like to see my car hit the 480 mark so any help is appreciated cheers guys ;)

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