I was wondering if anyone out there has heard of Nippon Pistons. I found a set that I am getting a really good deal on and was wondering what quality of product this company has a reputation for. Any input is much appreciated.
I have an 89 turbo 5 spd that I had the head rebuilt on and now it only boosts at like 4 psi according to the gauge, and sometimes wont boost. The car sat for awhile after i put the head on. The wastegate is shimmed so I know I should have alot more boost than this. Any ideas??
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