Quote:
Originally Posted by winders
Dan,
The Bosch injectors will have an improved spray pattern if you bump the pressure up to 60 psi and will also decrease the duty cycle which would be a good thing in your case.
If you don't have a fuel damper, I would recommend installing one. When I installed the FPR I listed above, my MoTec M150 traces for fuel pressure smoothed out.
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Thanks for the info Scott (winders). I will increase the fuel pressure. Regarding a fuel damper, I am still running the fuel accumulator from the the CIS system - I think the accumulator is intended to smooth out pressure fluctuations?
Thanks for the info Dave (montauk). Yes, the MegaSquirt does have a screen to input the injector dead time. Not knowing any better, I have been using the default value of 1 ms. But I will look into this further and adjust as necessary....
I looked at the last data log I recorded and yes, it looks like I will be running out of pulse width by the time I get to max rpm as the commanded pulse width at is 13.2 ms (1.0 ms dead time + 12.2 ms of fuel) at less than 6000 rpm.
I will be making the fuel pressure adjustment, then make a testing run with auto tune. Then I will schedule another dyno session so Gary (Bains Tuning) can dial in the VE table.