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Hi Dan and the rest of the thread,
Just to add on to the chat about injectors. Today I tested my injectors for dead time in preparation for tuning. The setup I have is 986 Boxster Fuel Rails with built in Fuel Pressure Regulator(FPR) that is calibrated for 3.8 Bar(55 PSI). I am using stock Bosch 0280156053 injectors rated at 260cc but with the stock 3.8 bar fpr they are theoretically rated at 294cc.
I did some testing today for dead times and with the stock FPR and stock replacement CIS Bosch Fuel pump they output 310cc with the FPR verified at 55 psi. When checked at different voltages and pulse widths in TunerStudio I ended up with a .81ms dead time. This is on a stock but tired old 77 2.7 CIS engine.
Sean
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74 911 backdate project
15 Macan Turbo
Last edited by TheBrokePilot; 06-20-2025 at 11:34 PM..
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