2021 Q50 Fuel Cut Issues! 😡

[kennethpowers]

This is common with the VR30. If you always keep more than 1/2 tank you really shouldn’t have this issue. Or once you do an aftermarket lpfp it goes away entirely. I will say once I tuned the car I’ve never had the issue again either even before I did the fuel system.

[dankolicious]

This is a known issue with the factory fuel pump basket and pickup. It was designed for a daily sport cruiser, not a racecar. Problem is its located in the front passenger side of the tank, and the feed pickup tube on the drivers side is also draws from the front of the tank. Going around ramps, and uphill curves while accelerating makes the issue more apparent. (all the fuel sloshes away from the basket and pickup) It's a bigger issue on tuned cars because they launch harder. Either keep your tank over 1/2 a tank, or you will need to extend the pickup tube on the driver side and add a Holly Hydramat to your factory pump in the basket. I came up with this mod when my car got too fast to handle the fuel demand. No question that will solve all your issues. Forget the dealer, they can't fix it because it is a design flaw.

[the_anton_kabanov]

Without looking at the car in person. A few things that could be causing it might be obviously bad pump, bad fuel pressure sensor, bad fuel filter/dirty fuel pickup, bad spark due to worn out plugs, coilpacks not giving enough voltage, bad maf sensor, O² sensor on the fritz or something tune related.

[bimekjp]

I get this issue with my 2021, only happens around a quarter tank usually a bit lower. Happens very rarely though so ive just ignored it and try to keep more the a quarter tank. You should look into mechanical breakdown insurance it’s different from 3rd party warranty, I got that cause im planning on getting tuned, I only pay $15 a month. With mine as long as i show maintenance logs and receipts even for work you do yourself they’ll cover your car modded or not. Rn it’s happening alot but because i put on the AMS full downpipes and haven’t gotten a chance to get tuned so thats just a heads up if you plan running catless

[seep]

The fix is the ams dual low pressure fuel pump basket system. Allows you to launch at 1/8th of a tank at full throttle without cutting fuel. Pricey, but that’s the price of engineering a solution to a shitty stock low pressure fuel pump system.

[pistol]

I currently have the same issue in a 2016 q50 premium

[MrSamPhoenix]

I’d take her to another dealer if the original place refuses to help you.