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If I bought a cold air intake for my Mini Cooper s will it make it run lean or will the computer be able to counter it with more fuel? I'm thinkin of upgrading the injectors later to the jcw size which I believe was 380cc. Thanks!
The computers in these cars seem to be pretty adaptive so you can do a decent amount of mods before needing a tune. The basics such as pulley, intake, and exhaust will give you no trouble at all.
If you haven't already done so, your first performance mod should be a supercharger reduction pulley, smaller drive belt and one-step colder spark plugs.
It won't run lean and you don't need new injectors. The fueling is based on the MAP sensor input. A new CAI might increase MAP slightly, but the ECU is calibrated for MAP values much higher than what a stock package can deliver, which is why a re-map and injectors aren't even needed with a 17% pulley.
It won't run lean and you don't need new injectors. The fueling is based on the MAP sensor input. A new CAI might increase MAP slightly, but the ECU is calibrated for MAP values much higher than what a stock package can deliver, which is why a re-map and injectors aren't even needed with a 17% pulley.
Do you have any numbers or data on the ECU airflow calibrations? At what point would you need bigger injectors or a re-map?
It won't run lean and you don't need new injectors. The fueling is based on the MAP sensor input. A new CAI might increase MAP slightly, but the ECU is calibrated for MAP values much higher than what a stock package can deliver, which is why a re-map and injectors aren't even needed with a 17% pulley.
Oh okay thanks I didn't know that. All though I did hear some people talking about when you install a reduced pulley, that you need to upgrade your injectors to the 380cc set. They were saying at higher rpm it will lean out slightly, not sure about this though
04-07-2016, 04:12 AM
