i was running my new engine in on a stage 1 chip, so i changed over to stage 3, 7.2:1 gas flowed head etc.......... my car is a k plate saffy, so it was already wired with a lambda etc, so just mod the board a bit so the taller chip fits inside the ecu cover....... but reading the instructions its not hard to convert a non lambda car, just need to weld a boss into the exhaust and wire it in to the ecu,

So far its much better on fuel than the stage 1 at 9 psi !!!! for running in purposes. i do alot of traffic in exeter and this is deffo the way to go.

If you crive within the paramiters of the closed loop,as the instructions tell you it is great on fuel.

Let me know if you want more info mate.