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R34 Gtr Boost Controller Not Working?

full_stick

By full_stick,
in Engines & Forced Induction

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full_stick

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So the car went in yesterday to get tuned after a new pair of 2860 -5s, 600cc nismo injects and nismo fuel pump went in. Now the mechanic installed the turbos as he blew them last time the car went in for a major service. On the drive home from getting the turbos installed one of the vacuum hoses came off as both boost gauges, mfd and blitz i-color gauge were reading a flat 0 even though the car was obviously making boost. When I got the car back the boost controller was definitely working as it was set to 1.2 bar and I hit this once on the way home before the hose came off.

So I took the car in to get tuned and I'd totally forgotten about the gauges and vaccuum hose so I failed to mention it to the tuner as I was in such a rush. Anyway he tuned the car on stock boost and it made 294.9rwkw which I'm quite happy with. when I went to pick the car up i mentioned it to the tuner and we replaced the hose and the gauges worked again, so I upped the boost to 1.2 and it simply wouldn't hit that figure and it was spooling really slow so its fairly obvious that the boost controller isn't working. Any ideas as to what it could be????

I have replaced a couple of the vaccuum hoses with new ones while I was at the mechanics yesterday arvo. The doesn't hit full boost til really late in the rev range like over 5000 maybe even close to 6000rpm...

  • 1 month later...

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