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Car little laggy up top

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Old 05-29-2005, 08:04 PM
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Car little laggy up top
After 4K RPMs my Z feels a bit slower then before. I used to get about .940 volts on the O2 reading in WOT and lately its been down to .810-.910. I been told that I might need to upgrade the FPR because of the Walbro 255 80PSI fuel pump. What do you guys think?
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Old 05-29-2005, 10:41 PM
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94Z
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Re: Car little laggy up top
How long has the fuel filter been in there? I've put 3 in mine. Car has 170,000 miles. Would go flat when I hammered on it. New filter fixed it.
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Old 05-30-2005, 06:55 AM
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Re: Car little laggy up top
Its a couple of months old. Sometimes when i'm letting the car idle it would backfire fire a couple of times.
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