[HWYSTR455]

Originally Posted by Gator67

Re-did the lines, replaced the fp gauge, moved the inline pulse damper closer to the throttle body, added a direct mount pulse damper to one of the unused ports. System pressurizes to 60psi with key-on engine not running. But with the car running, fuel pressure spikes to just under 80psi and fluctuates +/- 5psi or so.Is there any way the Sniper, O2 sensor, or the tune could be causing this, or is the problem have to rest with the fuel system (e.g., controller, pump, fp sensor, etc.)?

Didn't realize you were running a mech gauge. Those things are junk, and wouldn't trust it.

Sadly, the base Sniper units do not have the ability to use a transducer, but maybe your digital gauge setup can support using a transducer.

Or, you can buy a stand alone gauge that supports transducers.

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