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just did a z6 swap in a 89lx sedan and it has all the correct parts 91si dizzy,ecu,intake manifold,resistor box, ect. well the cars starts perfect and quickly but when you give it gas it wont pass 3,000 rpms ( the motor limits at that rpm) what can be wrong with the car it idles perfect no misfires at all just that 3,000 rpm limiting what is the problem any suggestions? Thanks for the help in advance.
 
J

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are u throwing any cels? look at the little red led light on the ecu and count the blinks and tell us, most likely you wired something up wrong, or something is grouding out, did u solder all your connections? if not, solder is your friend with the mpfi swap, do it right THE FIRST TIME, itll pay off later
 

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either your distributor is bad, or the wiring to it came undone.

As was said, its your CPS, code 4.
Make sure the white wires going to the dizzy are hooked up right.
 
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