Is the mass air meter calibrated for the 30lb. injectors?
I have always known injector's to either work or don't work. However they can become clogged.
First, I would check the plug's to see if any cylinders are running a rich/lean condition. Second, I'd ohm all the injectors. Across the two pins should read 12-16 ohms. If everything checks out try tunning the motor again. Go to my web page, under Engine Management Systems, check out the tech tips.
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