just wondering what the ecu controls when it has been chipped,ie does the chip control everything or just the boost,fuel, ignition timing cheers mark

 

which chip / year?

 

its a scoobyecu chip and the car is a 95 wrx import

 

fuel, ignition, boost.. and a few other things.. idle settings.. the first three being the most interesting

 

Everything. Not just the performance tables (i.e Boost target/Boost control/Speed limiter/Rev Limit/Ignition timing/Ignition correction/Fuel etc..etc...).
The ECU code/software that runs the ECU is included in the ScoobyECU chip, so all the usual Diagnostic functions still run.