Hi, just installed a vipec v88 in my m52 turbo car. when it hits around 40% throttle it goes lean and cuts out like its running out of fuel. The fuel pressure looks good. my tuner installed obd1 crank and cam sensors to work with the vipec and he says hes getting good signals from them but im not sure. anyone ever have issues like this? is there something we overlooked? It idles great and runs well at part throttle. specs are 91 318is, m52, pt5252s, id1000cc injectors, aeromotive 340lph intank pump, turbosmart fuel regulater ect. The tuner has lots of experience with vipecs but this is his first bmw. any help would be appreciated.