IMO I don’t think so. Others will chime in. Pressure doesn’t change under load. I think you have issues you haven’t looked into yet.

3 hours ago, gotham22 said:

. At idle, the pressure reads 32 psi. When I manually move the throttle, it increases to about 38 psi.

This normal. It also shows (edit) pretty good intake system vacuum. 30 psi or below at idle is normal. Have you adjusted the valves recently?

If I had this problem I would check the TVS (aka TPS). Make sure it's working right at open throttle. It's what adds the extra fuel. Your fuel pressure looks good.

Edited May 11May 11 by Zed Head

On 5/6/2025 at 2:55 PM, siteunseen said:

Hooking up a vacuum gauge is somthing else that helps find problem. You can get them at chain stores with loaner programs for free.

Here's the link -

https://www.atlanticz.ca/zclub/techtips/vacuum/

I am going to check the afm and tps next just to rule those out.

TPS passed the multimeter test. Next testing the AFM.

What condition is your EFI harness? Have you replaced all of the connectors? I fought it forever. Finally reworked and soldered each connector, cleaned each contact and was amazed.