09/10/2026
Well I managed a new personal best 1/4 mile time in my 2026 Audi RS3 last weekend at Tunerbash. I managed an 11.3 @ 120mph while utilizing a JB4, running Map 4 on E20, with all OEM hardware except for wheels/tires and lowering springs.
So far it's been a bit of a nightmare using the JB4 because the car kept breaking up and misfiring on Map 4 E20 and Map 5 E30. After God only knows how many logs back & forth with George Bms from Burger Motorsports we have now figured out that it is physically impossible to run Map 5 E30 at sea level with my RS3. It's a shame because I was hoping to utilize the JB4 at its max potential before the end of the drag racing season which is only a couple weeks away for me now. We also figured out that I needed to tighten my spark plug gap to 0.022 to ensure I wasn't experiencing spark blow out. Which is insane to think at only 23psi.
I was reasonably happy with the performance gain I saw improving my ET from an 11.6 to an 11.3 and my trap speed from a 114mph to 120mph with just a little bit of ethanol and a JB4, but overall my experience with my 8Y.2 has still been shi$astic. All of the electronic, sensor, MMI, transmission and other issues I've had have kind of ruined it for me. I'm praying there are eventually some updates that rectify some of the issues I'm having. Luckily I have a bit of performance that I can have fun with now with this JB4 installed.