Just dropped a newly built engine into my 89 GTR, and installed a new Innovate SCG-1 Boost controller wide band O2 at the same time. Put in Nistune ECU and went to start the tuning process. I've got it running, but pretty rich WOT and wanted to take the boost up to 1.2-1.4 bar and clean up the fuel trims thinking higher boost may even up the richness on WOT. The car will not push more than .8 bar regardless of gain, or duty cycle settings on the boost controller. I have tried everything, even tapped a line just after the turbines combine before the air enters the intercooler. Nothing over .8. I pulled of a line of the solonoid and it will boost like crazy, had to quickly let off throttle as it went up to 1.45bar on the pull, which tells me the actuators are working...Any ideas? What am I doing wrong? Actuators are T'd into each other and I was pulling the other source from the plenum right under the #6 throttle, also tried running a source from the "twin Turbo" collector?
HKS 2530's with oversized outlets, 264 poncams, NAPREC Port and polished head w/ 1mm over chamber, adjustable HKS cam gears, 1mm hks head gasket, N1 rods, n1 oil pump, n1 water pump, 680cc HKS injectors, 65mm downpipe, forged pistons.....should be putting out some decent power.
