Originally posted by 2JZ JC
well i had that one tear that i made a thread about awhile back, and we fixed that. but then i developed another one that couldnt find, took it to the dealer, now it runs a bit better, but NOWHERE near the power it should, and when it would normally take off around 3500 or so, now doesnt happen until close to 5500. sounds like theirs a small leak and i hear it more on the drivers side. the dealer replaced a few small things, but it feels really weak now. they messed with my wastegate a bit, that may have something to do with it too, but to be honest im not sure. i havent owned a supra long enough to know it inside and out, ive been hittin the different supra forums hard.
Do a boost leak test. Don't throw money at a problem it just makes you spend more money. Get a silicon hose kit to replace all the rubber hoses and zip tie them down. Do you have a boost gauge? If so are you hitting full boost? I can not stress this enough. DO A BOOST LEAK TEST. Weak wastegates in MKIVs usually don't allow you to hold boost to redline however you can still hit full boost.