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Update too long over boosting issue
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Posted by Goblin [Email] (#2224) [Profile/Gallery] (more from Goblin) on Sun, 20 Jul 2025 12:24:47 Share Post by Email
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So I guess the mosfets were bad in the original ECU and I should have just replaced the mosfets and thrown it back together. Because now I put the original T5 ECU with the T5 boost control valve back in the car and now the car drives normal. So there must have been something wrong with the t7 modified ECU. Because the mosfets are all good in the t7 modified ECU and I ran through every different scenario trying to get it to work and could not get it figured out. So this morning I just threw back in the original ECU with the good tested mosfets and the T5 valve and everything drives as it should. I've already gotten a hold of Jordan at modern classic Saab through email hopefully he'll answer me back. He did that t7 modification probably over a year ago so I assumed everything was fine with the ECU I never put it in the car when I got it back from him. So now that it's not working hopefully he'll take it back and run some tests on it and see what he can figure out.

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