Too Much Boost?? - Ford Powerstroke Diesel Forum
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Old 03-28-2010, 04:38 PM
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Too Much Boost??

I got a late 99 with nothing on it except a straight pipe and a chip. the chip was on the truck when i bought it. the guy said it was a 50 horse chip...no clue what brand or anything. after i got the gauges in over the past few days of daily driving when i slam that skinny pedal to the floor its nothing to hit 25-30 psi and i can definitly hear it surging.

so my queastion is. is 25-30 psi too much for a stock turbo and for the surge what is better a wicked wheel or ats housing?

also my fuel pressure is at 60 psi....is this normal....i read somewhere on here it should almost be 100?

Thanks in advanced!!
mike
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Old 03-28-2010, 07:09 PM
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Mid 60's on fuel pressure is what seems to be best i usually hear between 65-70psi. ON boost when you start getting up around 30 psi the stock turbo is super heating the air and it is not helping your power, cold air is more desirable.
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Old 03-29-2010, 04:10 AM
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I run TW tunes and can hit 25-30psi easily on his heavy tow tune. My mods are in my sig and as you can see, there aren't many. I wonder if your wastegate is unplugged?
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Old 03-29-2010, 07:33 AM
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25-30 is normal boost for a chipped truck, but anything over 25 and you are limiting the life of the stock turbo.
60psi on FP is fine as well.
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Old 03-29-2010, 07:39 AM
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Less than 25psi is normal as well. I boost verylittle in extreme, very high in heavy tow, medium in street race, etc, etc.
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Old 03-29-2010, 12:06 PM
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thanks for all the info guys.....i can see why gauges are pretty important aside from towing and stuff!

What about the surging? and one more stupid queastion where the heck is the pcm? is it the gray box next to the clutch under the dash?

thanks again!!
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Old 03-29-2010, 06:20 PM
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yes the pcm is the gray box behind the e-brake
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