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Old 03-31-2013, 01:56 PM
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Low boost/high EGT towing

1997 f350-4x4-4.10 gears-auto-285/75/16 tires
Exhaust/big air filter/Wildman chip/gauges

...now the situation I have is I just put the Wildman chip and gauges in and towed my 8k camper less than 200 miles away.while towing I noticed its easy to get to 1200 degree temps on egt gauge and only see 15-17psi max on boost gauge at shifts.truck falls on face in heavy tow or race tune.really see no difference in stock,economy or light tow tune as gas as boost/egt's or power.i see a small increase in boost in street tune.dont have an intercooler and have stock injectors.fuel issue maybe?
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Old 03-31-2013, 02:02 PM
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exhaust leaks on you up pipes or manifold gaskets?
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Old 03-31-2013, 02:32 PM
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You need to check for boost leaks or exhaust leaks.
For lack of power, you could be running out of fuel or high pressure oil, or both.
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Old 03-31-2013, 03:47 PM
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What about the high egts without really pushing the truck?
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Old 03-31-2013, 03:52 PM
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High egt and low boost can be tied together, If your up pipes and or manifold gaskets are leaking it will cause low boost and high egts.
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Old 03-31-2013, 03:55 PM
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Lack of air to complete the combustion of all the fuel allows for hotter temps.
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Old 03-31-2013, 03:55 PM
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Truck is stock,never been into the intake or manifolds as far as I know,any way to diagnose other than pulling it apart?buddy of mine was telling me that my fuel socks in my tanks may be clogged and restricting fuel flow.if I manually shift truck I can get 25 psi

Last edited by Dzldust; 03-31-2013 at 04:05 PM.
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Old 04-01-2013, 06:12 AM
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Could the turbo be going out.truck has 196k and I have no record of the turbo being replaced.
With a manifold leak or up pipe would I hear anything like hissing or what sounds like a leak?
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Old 04-01-2013, 12:26 PM
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Look around your engine bay for black soot around your manifolds, up pipes, and turbo
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Old 04-01-2013, 01:44 PM
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found some sooty streaks under the up pipe,had to get under the truck to see it,I forgot to mention that the truck does not like heavy tow or extreme settings,starts to stumble and idle lope

Last edited by Dzldust; 04-01-2013 at 02:32 PM.
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