Calibration is simply inputting the correct values in the ecu software, which all tuners will charge you for! Any ecu is fine they are all very capable as technology has come a long way from the OFAB/C era. I too am running OFAB at the moment with the same setup with trigger wheel, EDIS etc, therefore I decided to go for a plug and play option - Mega squirt - so I could learn the calibration side of things as I like to diy. In a nutshell all ecus all do the same thing ergo how much do you want to spend and how far do you want to go with your car? F88 is a serious bit of kit, but whats the point if your not going to run all the features?

What I found was that in order to run any aftermarket management system you need to install a wideband sensor and gauge. Combine the wideband to the ecu powered from a switched live in order to read the air to fuel ratio so that the car can be tuned, this means welding a bung to the down pipe so it can accept the linked lambda sensor. The next step which is adding extras functions such as sequential injection means that you select the output from the ecu and wire accordingly to your new loom so you can enable the function on the ecu and then install the necessary parts to the engine.

It comes down to what you want the car to be able to do. Weigh up the options from each ecu as to what would suit you best.

I went for MS as I didn't want to make a new loom or swap out any of the sensors and there is a lot of support online. First what I am planning to do is first find idle using its auto tune function, and then drive the car around and the ms ecu will make the adjustments itself for the base map, which I have written myself. Once that's done and the engine has been run in, only then will I swap injectors and at the same time send the car for mapping... Or well that's the plan anyway