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Gtr Boost Problem


AsH__85
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Hey all

I have been having this problem since I got my car from japan have sent it to endless workshops and noone seems to think there is that bad of a problem.

after looking at some of the other people gtr's on here and their mods, I know there is a problem.

Mine is a 1990 GTR with twin garret 25/30 turbo's brand new, powerFC apexi avcr 3"exhaust (from cat I think) tuned at 18psi and has 220awkw

THE PROBLEM!

The car runs ok i spose not great but has

insane boost lag.

and a hi idle. (approx 1500)

when you take off and put your foot down or even on the highway at 100 and you put your foot down the boost gauge slowly makes its way up the 18psi and the car slowly goets faster and faster.

It seemed to me like it was a air leak or a air blockage somewhere but everyone I have taken it to dosent seem to think so. They have done all their little tests and so forth.

The computer reads no sensor problems either. If anyone has any idea's what it could be I would really like to hear some suggestions.

It has been to 4 mechanic's now and is marginly better. for the money that has gone into it.

AsH

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check all intercooler pipes for leaks.........look for splits in the pipe which open only under boost conditions.Had this happen on my GTR recently.....LOL only made 170kws on the dyno at the time!!! 2 Days ago after fixing it made 311kws......

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