Compression Ignition Addict
Join Date: Jun 2012
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Ummm yeah... little help.. (free beer for the one who helps solve)
Okay guys, 00' f350 cclb 4x4 auto 259K miles 100% stock except for the 6638 mod
im maxing out on boost (WOT) at about 13 lbs (mechanical gauge "t'ed off the maf line) and 8 lbs from the bully dog gt tuner (not using the tunes just using it for gauges)
installed the tunes for grins and giggles and i can easily hit 25 lbs (gauge and 17 lbs on tuner) like right now without a second look then un-installed the tunes, and back to low levels of boost
No tunes normal light driving (not hammering it) i have some light smoke (black) but not much...
boost seems to lag quite a bit but then when it spools it maxes out at 13 lbs maybe 15 if i really push it hard at WOT.
no check eng light.. but I am still throwing the following codes when i wanna pull them
Have no Idea where to start looking... still pulls great but i know shes not pulling like she used to.... already looked... no exhaust leaks anywhere, and zero blow by or pressure under the oil cap. (aka blow by)
so heres what im thinking
bad or leaking CAC (charge air cooler - intercooler)
low HPOP oil?
boost leak at the blue boots (pass side boot at the CAC is oil soaked it appears, but could be just road grime) - let me know if pics will help and ill get them
Back ground info:
all oil changes done at 3500 miles
mostly highway miles
all filters changed every 7K (oil filter at service)
run a jug diesel klean every 500 miles
pulls a 3K lb. tilt deck car hauler trailer occasionally with a friends honda (track car)
Full Gauges + elec Tuner gauges
still has foil on the intake ---- how does de-foiling help the motor btw?---
only MOD is the 6638 - rear diff cooler
and lastly... now that I have a pyro... where should i set my defuel at on the 7.3 so i dont damage my motor....
thanks for the input and help ahead of time guys....
if any of your input helps Ill make sure you all get a beer on me....
USMC 1st MARDIV
2005 6.0L F-250 LARIAT CCSB, 4X4, Auto 281K miles
CREW CAB, EGR Delete, 4" Turbo Back, Straight Piped (Bully Dog Triple Dog... Just for Gauges
2003 F350 Lariat, CCLB, 4x4, Auto, 6637 Mod, Gunny HUD Mod, 98,627 ORIG MILES
PARKED PENDING INSTALL OF THE
7.3 SUPER BLACK MAMBA MOTOR
Last edited by GunnyRappUSMC; 08-20-2013 at 10:52 AM.