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Discussion Starter #1
Hey whats up?
When im under boost i can build 14psi very fast then it just drops rapidly to 7psi why? I dont think its a boost leak if it is happening so fast. Or am i wrong?
 

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hmm is it waste gated? or maybe just because of the high rpm the back pressure in the hose doesnt have enough time to build up.
 

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Discussion Starter #3
No its internal wastgated, i fixed the problem but now i cant get my boost to go higher then 14-15psi? I want to get it to 20psi. I think my boost controler is not letting me get there.
 

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what boost controller, what turbo? I see t28rs, you mean a GT28RS? just making sure.

if your wastegate line is really long it can cause this. also, if the line has a few small restrictions, same thing.
 

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What BOV are you running? Could very well be your problem. My BOV was leaking, and I couldn't boost more than 5psi, or it would spike to 7psi and go right back down to 5. I had to dissassemble the BOV (greddy type s) and remove one of the springs inside it. I also cleaned it up and put it all back together, and it was fine.
 
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