Tom Hummel

Hey guys, in the process of installing the full MKTurbo kit from Lars and just installed a set of 640cc injectors from Flow Force, car uses a Megasquirt PNP Pro for engine management, also has the wideband installed, it is a 2001 NB. I changed the tune from the stock map PNP pro map to reflect the new injectors in both the injector flow rating from the stock flow rate to 640cc in "Engine & Sequential Settings" and the injector dead-time curve in "Fuel Settings" to the value recommended from Flow Force's website. The car has a lot of trouble starting, need to give it throttle on start, seems to be running SUPER rich, high 9's to 10 AFR, and some misfire on start which I am assuming is due to the rich condition. Is there anything else I should've adjusted or should I start reducing the cells in the Fuel VE table to lean it out under low-load, idle RPM? I have attached to tune beings used, any help at this point is much appreciated. Thanks a ton guys, FYI I am a newbie to Megasquirt so I might have missed something.

LeoNA

Your required fuel does not seem correct. Mine is 4.30 for the FF640.

user 8202

Yeah I believe your required fuel should be a lot lower. Check out carpassionchannel youtube channel, he has a video of putting in new injectors and updating megasquirt.

Tom Hummel

Thanks guys, changing the required fuel got it going....now to work on the Idle..