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Message: <blockquote data-quote="seantang" data-source="post: 112955" data-attributes="member: 1589">Running higher than stock boost is neither safe nor unsafe. That depends on the modifications.Really, running a high boost on any turbo engine is dependent on only 2 factors really:- tuning (timing, fuelling - the software ie. SAFCs or Motecs etc + the tuner's skill)- hardware (forged internals, heavy duty bearings, metal gaskets, oil coolers etc)There is a minimum baseline for both factors. That's something like adequate fueling/rich enough (tuning) or an accurate wastegate & an adequate cooling system (hardware). But beyond that, the better one factor is, the less optimal the other factor can be.For eg. if you have perfectly set fuel & ignition maps, you can have 1.2bar boost with stock internals. But if your tuner is an average guy and cannot chart out the thermodynamic effects of hot weather on a 75% efficiency intercooled turbo system... much less figure out how to deal with that by adjusting the fuel and ignition maps, - then you need to put money into the hardware factor to compensate for low tuning factor. You will need hardware like forged pistons, metal gaskets, tougher bearings etc. to deal with the extra boost.There are of course limits on both sides of the equation, and the minimum requirements increase as the power produced is increased.So, ask yourself... how good is your tuner? And how much are you willing to spend on hardware (knowing full well that the lousier your tuner is, the more you'll need to spend)?I've seen stock GSRs do quite well with 1 to 1.1bar of boost with virtually no modifications except a SAFC but the tuning of the AFC is very, very important.</blockquote>

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