coza Posted May 10, 2016 Share Posted May 10, 2016 Hi , I will be installing a greddy profec b spec 2 boost controller this weekend looking to raise the pressure to 1.1 Bar when doing this do you have to check the air fuel ratio after? as i dont have the gauge at the moment. the cars is BPU set up twin turbo import. thanks. Link to comment Share on other sites More sharing options...
Guest Budz86 Posted May 11, 2016 Share Posted May 11, 2016 Not if it's just the boost controller as the ecu will adjust fuel automatically to an extent, and unless you have a piggy back or standalone ecu you can't change the fuel anyway. Might be safer to cap it at 1 bar for the moment (that's the stock boost cut to prevent 'over boost') until you can sort the fuel, but plenty have not done that and been fine. Also, what injectors do you have as the 440 jspecs will be maxed around 1.2 bar anyway (UK 550s are fine but you need an ignitor pack too for the swap). Link to comment Share on other sites More sharing options...
coza Posted May 11, 2016 Author Share Posted May 11, 2016 Yeah standard j spec injectors , but have got the fcd and fuel pump Link to comment Share on other sites More sharing options...
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