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Turbo swap, problems

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Rogue_Ant

20+ Year Contributor
180
0
Dec 18, 2002
Denver, Colorado
Ok, finished turbo'ing everything on my 91GS auto. Added all four wires to the wiring harness, turbo maf, knock sensor, bcs, injectors, resistor pack, fpr, fuel pump, ect. Now it runs great unless I'm above 5psi and over ~4000rpm. Then it just acts like I'm on the rev-limiter.... no matter how much gas I give it it fluttlers around ~5000rpm. I'm getting no errors on the datalogger, and no knock. Timing is set @5btdc. It just starts missing really bad, but if I'm not on it, it runs great.
With the stock ecu (n/a) I can boost ~10psi fine all the way to redline without any missfire. I would really like to use the turbo ecu. Anyone have any ideas?



Rogue
 
Also if I unplug the maf, then it will rev-up fine.... I would say its the MAF but it works fine if I have the n/a ecu in there....




Rogue
 
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