on friday i installed a profec b spec 2, all is good, got it running 13psi on HI, and 11psi LOW.
last night on the way back home, cruising in 4th gear i slowly put my foot down and at around 4000ish rpm and 12 - 13psi i could hear a fast ticking sound, wasnt very loud and seemed to be coming from the passenger side, wasnt loud but i could hear it and was ticking pretty fast ! sounded like the noise solid lifters make, but ive never herd this sound coming from the engine before. it was running stock boost before the boost controller went in (had the restrictor removed but boost only increased to 11 - 12psi, but made it more responsive)
oil pressure is perfect, and just had a compression test showing 160 - 162psi across each cylinder. engine idles nice and smooth. serviced last month with NEO syntheic 10w-40 100% ester base fully synthetic oil (costed $170 for 6 litres) ive put an extra 500ml of oil in for good measure also changed the fuel filter.
could it be detonation? what exactly does it sound like (sorry if thats a stoopid question)
could it be an exhaust leak from the manifold/turbos etc ? could the extra boost blow a gasket?
it doesnt do it at idle or under 4000ish rpm...didnt realy take it past that when i herd the sound just incase...
if it helps ive got stainless steel aftermarket front pipes, 3" hi flow cat, 3.5" hks silent cat back, M's pod air filters, and profec b spec 2
any info from the guru's would be much appreciated !!
cheers