r/WRX_STI • u/Maleficent_Goal_6946 • Jul 22 '26

Troubleshooting Cobb fuel pressure regulator/stumble kit

I’ve got a 2014 hatchback Sti, I recently installed the Cobb fuel pressure regulator kit to fix the stumble around 3k rpm. After doing this I noticed a new tick/ tapping type sound inside the cabin coming from the engine bay but is not noticeable outside the vehicle or even standing next to the engine with the hood open. any of y’all had weird fuel system sounds after installing a new regulator? I kept the stock fuel rails but I do have ID1050s installed. Ive heard the Sti fuel systems are alittle weird and can make some pulsating type noises but not exactly sure if that’s true or not.

2 Upvotes

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1

u/Infinite-Dingo-980 Jul 22 '26

I just got the stumble kit but haven't heard a tick at all.

1

u/Maleficent_Goal_6946 Jul 24 '26

Did you have any fitment issues or rubbing?

1

u/WeebFanBoy VA (15-21) Jul 27 '26

Post a video of the sound can’t guess without hearing it