I put my E30zone chip back in, it is better then the factory ecu chip, not sure how much better though, but the seller of it doesn't make big claims, these are only 30 pound, so a bit cheaper too. This is what he told me originally: Hi Charles, Either Mild or Wild will be suitable for your car. The Mild gives an extra 8-10bhp but dramatically increases low-down and mid-range torque for improved driveability and better fuel economy. The rev limit is raised to 7000rpm for when you're i