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Originally Posted by Sharaz508
no it cant be a boost leak becasue i get all 7 psi and when i do get boost it runs way smother i think its becasue my exhaust dont have enough back pressure before my turbo spools
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I know enough about turbos to tell you that just because you get 7pounds boost and it runs smooth under full boost does not mean you dont have a leak in the system.
I will admit however that I have little knowledge into the turbo Supra so I probably cant be much help but let me offer at least a little advice. When I buy a used car, I spend at least the next 6 months fixing it. And when I say fixing it I mean everything. Missing a screw in some random interior item? I find the right kind and replace it. Im just that way. When it comes to engines, they really do rely on all their systems working together properly. One system out of adjustment or not working CAN and WILL cause other systems to stop working properly.
If your struggling to find whats making your car run crappy, start fixing things you can see that are wrong (like your missing nuts and bolts on the turbo system), and eventually if you keep swingin' you might just hit the nail on the head.