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Z Chassis Technical discussion related to the Z Chassis such as the S30, S310, Z31, Z32, Z33 and Z34.


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Old 11-25-2017, 11:30 AM   #1
nddavis2
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03 de running 100% injector duty

I have a 91 240sx with a vq swap running incredibly rich. Has plenum spacer, intake, and exhaust and has been tuned which is when we found the issue. Injectors are running at 100% duty all the time and I have been unable to track down the cause. The ECT, and IAT both check as good. Maf is on the upper end during idle at 6-6.2 g*m/s to where it should be 2-6 at idle. No vacuum or exhaust leaks found either. Running stock ecu with uprev installed. Looking for more ideas.
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