Exhaust, Programmer and now some problems - Ford Powerstroke Diesel Forum
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Old 05-04-2010, 05:38 PM
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Exhaust, Programmer and now some problems

Hello, new to the board and of course I join because i have a problem:

I just recently put full exhaust (with muffler) on the truck (2008 F350) and updated my SCT programmer with the "off road" option.

My problem is this: Ever since installing the exhaust, my "check air filter" warning keeps coming on. I replaced the filter and it has made no difference. I drive a hundred miles or so and i have to reset the sensor at the filter. Is the motor flowing so much better that the stock filter setup can't keep up?

My other problem is this: Ever since I changed the fuel filters, my "drain water seperator" warning keeps popping up. I attempt to drain it, but nothing comes out. The warning will go away for a while but then comes back.

I will say that with the exhaust and programmer I have seen about a 3mpg gain and definately some noticable power.

Thanks for any help you guys can offer.
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Old 05-04-2010, 05:50 PM
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Quote:
Originally Posted by Wes Whittle View Post
Hello, new to the board and of course I join because i have a problem:

I just recently put full exhaust (with muffler) on the truck (2008 F350) and updated my SCT programmer with the "off road" option.

My problem is this: Ever since installing the exhaust, my "check air filter" warning keeps coming on. I replaced the filter and it has made no difference. I drive a hundred miles or so and i have to reset the sensor at the filter. Is the motor flowing so much better that the stock filter setup can't keep up?

My other problem is this: Ever since I changed the fuel filters, my "drain water seperator" warning keeps popping up. I attempt to drain it, but nothing comes out. The warning will go away for a while but then comes back.

I will say that with the exhaust and programmer I have seen about a 3mpg gain and definately some noticable power.

Thanks for any help you guys can offer.
You need an aftermarket intake or filter to get rid of the "check air filter". Let us know if we can help with that.

As for the water separator, it might be a bad sensor.
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Old 05-04-2010, 05:56 PM
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Ok, but can you tell me why it is doing it? The programmer has been on the truck prior to the exhaust, so I am assuming it is related to the exhaust, but don't understand 100% why.
Thanks for the help.
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Old 05-04-2010, 06:39 PM
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When you say Off-Road tune, are you referring to the higher tunes requiring you to remove the DPF? If so, then the tunes you were using prior with the DPF installed were probably not robust enough to require a CAI replacement. The Off-Road tunes are much more aggressive and require a better flowing CAI.
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Old 05-04-2010, 06:45 PM
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Originally Posted by smotrs View Post
When you say Off-Road tune, are you referring to the higher tunes requiring you to remove the DPF? If so, then the tunes you were using prior with the DPF installed were probably not robust enough to require a CAI replacement. The Off-Road tunes are much more aggressive and require a better flowing CAI.

That might be the case, but i thought the only difference when i upgraded the software in my tuner was the ability to turn the regin off. If it matters, it does it on the tow tune, which is my lowest tune, as well as the performace tune.
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