CP4
Cargo Master
Joined: Feb 2020
Posts: 2,277
Likes: 949
Except you want/need the required pressure. Higher pressures give better atomization through the nozzle and cleaner burn (more efficiency, more power).
Fleet Mechanic
Joined: Oct 2022
Posts: 1,823
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From: Dallas Metroplex
Not trying to stir any pots...
Cross-Country
Joined: Dec 2015
Posts: 52
Likes: 46
From: SC
Just to add some more info on DCR;
2014 F350, CCLWB, SRW, 138k.
I completed the DCR conversion about 14 months and 11,000 miles ago. Took me approx 12 hours. DCR kit and fuel lines fit perfectly (not one ounce of pressure to get them to line up). I was completely surprised at the quality of the product, including the packing container.
Truck was stock at the time and now is lightened and I run a 0 HP tune, no transmission tune. Some moderate towing (10,000 lbs). About 2000 lbs in the bed at all times. There was no difference in DCR / truck performance before or after.
From the day of completion till today, truck has run normally, with a possibly slightly different sound? Truck starts 'quicker' hot or cold. (With CP4, when hot, starts were longer). I had a slight ticking when cold which went away with DCR and has not returned. At completion of installation, primed 7 times and started right up.
Reference the discussion about cmd and actual rail pressures, I monitor with EZLynk and they are solid, not a lot of movement (on highway, steady throttle). Actual is ahead (.1) or identical to command.
scott
2014 F350, CCLWB, SRW, 138k.
I completed the DCR conversion about 14 months and 11,000 miles ago. Took me approx 12 hours. DCR kit and fuel lines fit perfectly (not one ounce of pressure to get them to line up). I was completely surprised at the quality of the product, including the packing container.
Truck was stock at the time and now is lightened and I run a 0 HP tune, no transmission tune. Some moderate towing (10,000 lbs). About 2000 lbs in the bed at all times. There was no difference in DCR / truck performance before or after.
From the day of completion till today, truck has run normally, with a possibly slightly different sound? Truck starts 'quicker' hot or cold. (With CP4, when hot, starts were longer). I had a slight ticking when cold which went away with DCR and has not returned. At completion of installation, primed 7 times and started right up.
Reference the discussion about cmd and actual rail pressures, I monitor with EZLynk and they are solid, not a lot of movement (on highway, steady throttle). Actual is ahead (.1) or identical to command.
scott
Lead Driver
Joined: Feb 2022
Posts: 7,984
Likes: 4,058
I'm not a fuel injection specialist (and haven't stayed at a Holiday Inn Express lately), but unless I completely misunderstand I would think that if the pump provides whatever pressure the ECU commands/requests, then it's delivering optimal pressure, correct?
Not trying to stir any pots...
Not trying to stir any pots...
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theleetbeagle
1987 - 1996 F150 & Larger F-Series Trucks
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Oct 24, 2001 08:56 AM
