joelrs7 Posted October 5, 2012 Share Posted October 5, 2012 Hi everyone. A few months ago I swapped a L28ET into my 1978 280z. The issue i'm having trouble with is when I get the car to boost, and once at full boost it once to fall on its face. Also when I try to give it throttle it stutters and cuts out. So far i've replaced the TPS, cylinder head temp sensor, and replaced the injectors. I'm running fmic 32 lb injectors, and running 20 lbs of fuel pressure.(the problem still occured before replacement of the injectors). Any advice will be much appreciated. Thank You. Quote Link to comment Share on other sites More sharing options...
loy Posted October 5, 2012 Share Posted October 5, 2012 Running stock ecu? If yes. Were the injectors from before also not meant for the motor? The fuel pressure is really low. It runs fine throughout vacuum? Quote Link to comment Share on other sites More sharing options...
joelrs7 Posted October 5, 2012 Author Share Posted October 5, 2012 Yes it has a stock ECU. The previous injectors were N/A ones that came with the motor. The reason for running such low fuel pressure is because it seemed to bog the motor and make the exhaust really bad as if it was running rich. With the N/A injectors I was running running 40lbs. And sorry what do you mean by vacuum? Quote Link to comment Share on other sites More sharing options...
loy Posted October 5, 2012 Share Posted October 5, 2012 (edited) Is it a turbo ecu or N/A?. Vacuum is what you're in before boost. I highly doubt it will ever run perfect without the correct injectors. Edited October 5, 2012 by loy Quote Link to comment Share on other sites More sharing options...
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