Compression Ignition Addict
Join Date: Oct 2006
Location: Humboldt, California
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Help with Coolant Pressure Readings
Day 1- Stock tuning, once I got it up to temps pressure was 5psi consistently on the highway. WOT runs up to 70mph it would hit 7psi or so. Going up a steep hill ECT got up to 208* and reached 10psi.
Day 2- SRL tune for my pmax. Once up to temps I did some WOT to 70 again would hit 16psi and come down to 15psi. Then once on the highway pressure was a consistent 14psi. Then running up the same hill the day before ECT got up to 208* again and pressure was 15psi.
I have a washer in the up pipe with a 1/4in hole to prevent CEL when not tuned (plan on just plugging it all together when I have time). Also when the truck hit 16psi tuned, I looked under the hood and didnt see any coolant spewed all over, but I guess the coolant wouldnt have to come out as long as gas pressure is released.
Not sure how to decipher this. Does tuning really add that much more pressure to the system? Just thinking out loud, but by not allowing the gas to really escape the egr cooler when tuned, could I have a small in the cooler and with the gases not going anywhere, build pressure in the system? Because stock the egr valve would be open allowing gas to flow through? Maybe someone else has some other ideas or theories.
2006 F-350 CCSB Lariat
MBRP 4" Exhaust, ARPs, Barder Stage 2 turbo, S&B CAI, TSD SPD, Warren Competition transmission, Edge CTS, Coolant Filter, High Idle Mod, CCV Mod, Zoodad, Newton Leveling kit, Fuel Mavericks 20x9 , Pioneer DVD head-unit, JL Stealthbox and JL Slash 500/1v2 amp
Injectors and Driven Diesel RR-Alex