More Boost Problems...

Nissan 300ZX technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
Z32man
Posts: 130
Joined: Sat Jul 24, 2010 8:59 pm
Car: 1991 300ZX Twin Turbo
Location: Kansas City, KS

Post

Recently i have had to get a new PTU (power transistor unit) and a new starter in my TT. It is set at 15 psi and now i am having boost problems. The problem is that when i get to about 3000 rpm ,if i try to accelerate, it will accelerate but VERY slowly and my exhaust makes a weird noise. I think it might be an air leak?? It drives normal if i dont try to accelerate fast. I have no idea what it could be even if it is the most simple thing. :frown:


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NissanFairladyZ32
Posts: 2137
Joined: Sun Aug 31, 2008 2:58 pm
Car: 91, Twin Turbo, 99 Miata 1.8L
Location: Allen, TX

Post

Have you done a boost leak test ?

Z32man
Posts: 130
Joined: Sat Jul 24, 2010 8:59 pm
Car: 1991 300ZX Twin Turbo
Location: Kansas City, KS

Post

How do I do that??

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NissanFairladyZ32
Posts: 2137
Joined: Sun Aug 31, 2008 2:58 pm
Car: 91, Twin Turbo, 99 Miata 1.8L
Location: Allen, TX

Post

You need a special insert where ur aftermarket intake goes, you blow compressed air into it and listen for leaks


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