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L28ET motor swap issues.


joelrs7

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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.

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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?

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