[VipinLJ]

I had a Racechip on my A4 B9 before I got the 330i. There were a lot of people who said it doesn’t have any effect and that dyno runs will prove that it doesn’t work. But I never dynoed my car because my butt dyno was happy and I had before and after videos of the speedo enter where there was upto a 0.6s difference in the 0-60mph run and almost 1.7s difference in the 0-100mph run between stock and racechip. Still makes me wonder why these differences don’t translate on the dyno.