35mph I did a 2nd gear pull till about 6500rpm and shifted, Everything is good. 47mph I did a 3rd gear pull, about 5500rpm my car went BOOM but doesnt die. Still running. Try 3rd again.... BOOM, but still running. Tried it one more time and POP again. I say fuck it and shift into 4th and go again and BOOM intercooler pipe blows off . The clamp flew off somewhere so I went home and called it a night. What I don't understand is why it was popping.
Fuel cut? I rewired the pump with a relay awhile ago and it never did this before, even when it creeped to 20psi.
Pulling timing? Supra SMIC so I don't think it is that.
Boost leak? I just installed a new silicone hose but it is possible it was leaking since that is where the intercooler pipe popped off.
#1518, "RE: 15psi 3rd gear boom-boom" In response to Reply # 1
That sounds like intake backfire. The last one built up a little more pressure and blew off the intercooler pipe when it backfired again. Defintaly invest in a datalogger and find out whats going on.
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. The clamp flew off somewhere so I went home and called it a night. What I don't understand is why it was popping. 
