The cams and pistons are different between the engines for the ecu your planning on ,
You will not archive the goals your after on that ecu, and as Scott says you are not advised to run it on U.K. Fuel .
The 5th injector is worthless and was only put there for homoligation purposes,
The car your using should have a z4 ecu and Is the best production ecu for your car 260hp with a few simple mods it should make 270/280 but I'd strongly advise a fueling check .
You can not realistically swap injectors to I gather the 440s as the grey ones are 380cc
And hope to run on a stock ecu.
The sti ra ran more Boost as it had a better intercooler but they run short skirt pistons . Ratio is different and different cams .
z4 only is what im getting at lol and you will thanks us when you keep your shells around the crank not in your sump..
But if funds are there esl it!
Last edited by scooby doo; 04-04-2018 at 01:01 PM.
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