AreoForce gauge not reading Boost
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Postmaster
Joined: Jan 2009
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From: AL, Reform
AreoForce gauge not reading Boost
I have been trying to find out why my areoforce gauge will not read my boost psi after i got BTS tunes. i have talked to Brian several times and he can not under stand why it will not read, as he has no way to stop the pcm for seeing it. also my brothers truck is a 99.5 like mine and he got BTS tunes at the same time also and his truck dose the same thing.
with out the tuner i can see 18psi with the tuner in the most it shows is 7psi. one time it looked like it was working as it showed 27psi then it was back to 1.2 psi driving on flat ground.
i have tried 3 map sensors, checking for leaks, tinned the tuner pins, tried all the tunes, empty towing wot nothing makes it go higher then 7psi, i can not seem to find out what the problem is.
any thoughts on what to check? i will smoke for a second on WOT but then clears up and goes. pulls 15000lbs like it is not there but no boost.
with out the tuner i can see 18psi with the tuner in the most it shows is 7psi. one time it looked like it was working as it showed 27psi then it was back to 1.2 psi driving on flat ground.
i have tried 3 map sensors, checking for leaks, tinned the tuner pins, tried all the tunes, empty towing wot nothing makes it go higher then 7psi, i can not seem to find out what the problem is.
any thoughts on what to check? i will smoke for a second on WOT but then clears up and goes. pulls 15000lbs like it is not there but no boost.
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Postmaster
Joined: Jan 2009
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From: AL, Reform
they do pull good and low egt"s, i pull a dump trailer with ~8 yards of dirt in it all the time up so good hills and never drop under 60mph, could do more but that is fast enough with that much weight.
i think the 5th wheel is a lot more to pull as the air resistant goes up with it so tall.
i think the 5th wheel is a lot more to pull as the air resistant goes up with it so tall.
Post Fiend
Joined: Sep 2003
Posts: 6,096
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From: Mesa AZ
See if you can find out which PID Aeroforce is using to determine the boost. Technically speaking....the PCM doesn't care what the boost is...it only is concerned with manifold absolute pressure (MAP). Boost is Manifold Gauge Pressure, which I presume is a calculated value for most scan tools (MAP less Baro). As far as I can tell, the look up tables for each of those sensors are not interchangeable so I presume the scan tool would need to convert the voltage readings into psi and then do the math. If the scan tool is doing the math to the voltage readings and then converting to psi that could yield a much lower boost value.
However, I am just taking a wild guess at this point....I am not familiar with either product (BTS tunes or the Aeroforce Scan Gauge).
However, I am just taking a wild guess at this point....I am not familiar with either product (BTS tunes or the Aeroforce Scan Gauge).
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lud04X
1994.5 - 1997 7.3L Power Stroke Diesel
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Mar 8, 2012 09:26 AM
