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JJGTR

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Posts posted by JJGTR

  1. open the ECU up and see if its been chipped, I know my rb20 had a mines chip in the ECU, advanced the timing massively and was way too rich, basically was running on the knock map permanently and very rich, resulted in worse than stock performance.

    Factory nissan seals still intact on the ECU so I assume it hasn't been opened. Is it possible to open it without damaging the seal, and if so would someone really bother?

  2. Boost hasn't changed at all, however I took note of when it comes on boost and it around 1800rpm in 3rd it starts building boost. Full boost around 2700rpm.

    Stuck wastegate would not have this much low end in my opinion

    Ambient temps have gone from 35 to 20 degrees yet my power output dropped to 160kw atw on the first test.

    Second run noticed it started to lose a bit of power the longer I let it stretch is legs.

    Put 1+1 together and immediately stopped.

    Sounds like lean condition / fueling issue plus a separate boost issue.

  3. Hi guys,

    I picked up a GTR a couple of days ago and everything seemed fine, it drives very well and boost builds from ~2000rpm and will hold at ~7.5psi all the way from 3k odd to redline.

    Felt pretty gutless and thought it was a bit down on power but put it down to the hot weather and the cars bolt ons being pretty sedate (just dump pipes, hiflow cat, cat back and pod filters).

    Gtech+Iphone confirmed my arse dyno predictions, apparently making between 150-170kw at the wheels which is a bit of a worry so I went to see how much it would make with 1 bar and the restrictor on the solenoid line is already missing!

    I cant find any boost or vacuum leaks, but it absolutes refuses to make over 7psi. Aside from the power and boost the car runs perfectly and cleanly.

    I'm hoping the solenoid is f**ked or the cat is clogged up and the workshops I want to go to are still closed from the xmas break.

    TLDR version:

    Car is running 7psi with boost restrictor removed and making underwhelming power with no other symptoms.

    Any suggestions I can easily check?

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