I'm not being cynical at all. The chip is going to do its job,guaranteed. It will turn the injectors on for a longer period of time to allow more fuel to enter the motor with the extra air that the turbo will be pushing into the motor because of the increased boost. The 237 regulator is a possible means to the goal,but it costs money. I would rather see someone purchase an aftermarket adjustable regulator than a non adjustable 237. The choice is up to the OP. I offered him an option that costs nothing,retains the factory regulator,and described a very safe and controlled way of accomplishing the goal. Turning the injectors on longer and adjusting the base fuel pressure to the chip burners specs will work great if the pump is capable of supplying all the fuel it is asked to supply. He needs to find out if it can or the car might make less power and hurt something. I provided him with this information and a proper way to determine the pumps capability. It is critical to know if the pump is up to snuff. The only way to tell is to look at a gauge. After the fuel delivery systems capability is known,there could still be an issue with the injectors. I simply gave him some very useful information to insure his goal is met.Some good ideas, but you needn't sound quite so cynical as though nothing is going to work correctly with the chip change. The easiest way to ensure good fuel pressure is to just upgrade to a 237 regulator. In my experience this works very well, even in my 130K + car, and he only has 18,000 on his. Crusing the old 233 regulator is just too iffy, and not to be attempted by someone new to these cars.