There is a fix for the condensation build up in the intercooler!
11-24-2012, 01:06 PM
#921
I now had the new TSB applied where they replaced with the new CAC and hoses. They also did a PCM reset or upgrade or something to it. I am now seeing something weird on the way it reads the MPG. As the truck runs idle it drops the avg MPG down very quick. Meaning if I drive around town on highway I may get around 16.5 avg MPG if I reset, however if the truck sits still and not move for a couple mins it will drop down to 5 or 6. This makes me think it is not burning the fuel correctly or the computer is all fuxord? Thoughts?
11-24-2012, 02:25 PM
#922
I can't say wether this helps you or your "sheeple"(lol), but the F-150 controlls boost on the compressor side. It is an electronically controlled vacuum actuated system that dumps boost back into the intake track from both turbos in sync, but separately. This is hot air. The new 2013 does this electronically on the cold side of the IC, again dumping into the intake. It was apparently done for NVH, but surely has a minute effect on intake temps. The revised blow-off is not incorporated into the retrofit CAC replacement, so one could assume the new cooler design itself deals with the perceived condensation issue according to the TSB. So the relocated blow off added to the 13s as a NVH upgrade on the new models is just what it is. Surely not a problem for replacement or upgrade parts, simply plug a port. All a guess though. .
Just to make sure the sheep know (as well as this one!) does NVH stands for Noise, Vibration, and Hardness? I'm not familiar with the abbreviation. If so, they made these changes solely for this reason? I'm not ready to go there yet. An unsuspecting sheeple my have thought this was some complicated emission thing or something.
I'm very hesitant to respond to this unless you can produce a diagram or a document that shows a compressor side pressure control system in pre 2013 3.5L. The document I referred to in my earlier posts FOBDSM1202.pdf clearly indicates on page 151 that boost pressure is controlled by adjusting the turbine speed. This is done by bypassing exhaust gas around the turbine. There is no indication from the diagram or description that there is something downstream of the compressor and before the throttle to control compressor discharge pressure. Doesn't mean there isn't but let's see it.
....but surely has a minute effect on intake temps.
Last edited by Ch.E; 11-24-2012 at 02:28 PM.
11-24-2012, 02:44 PM
#923
Senior Member
11-24-2012, 03:50 PM
#924
I now had the new TSB applied where they replaced with the new CAC and hoses. They also did a PCM reset or upgrade or something to it. I am now seeing something weird on the way it reads the MPG. As the truck runs idle it drops the avg MPG down very quick. Meaning if I drive around town on highway I may get around 16.5 avg MPG if I reset, however if the truck sits still and not move for a couple mins it will drop down to 5 or 6. This makes me think it is not burning the fuel correctly or the computer is all fuxord? Thoughts?
11-24-2012, 04:38 PM
#925
I now had the new TSB applied where they replaced with the new CAC and hoses. They also did a PCM reset or upgrade or something to it. I am now seeing something weird on the way it reads the MPG. As the truck runs idle it drops the avg MPG down very quick. Meaning if I drive around town on highway I may get around 16.5 avg MPG if I reset, however if the truck sits still and not move for a couple mins it will drop down to 5 or 6. This makes me think it is not burning the fuel correctly or the computer is all fuxord? Thoughts?
When your idling at a stop its burning gas, lowering the mpg. If you burnt a whole tsnk of gas in oark ud have 0 mog. Over time stopping starts affecting it less as the driving to idling/stopping ratio becomes greater.
Every time you reset the mpg stopping will affect the
Mpgs drastically until you drive for a long time.
Last edited by Muggydude; 11-24-2012 at 04:41 PM.
11-24-2012, 08:09 PM
#928
Senior Member
11-24-2012, 08:09 PM
#929
Senior Member
Finally a comment that is not just low watt crude school yard drivel.
Just to make sure the sheep know (as well as this one!) does NVH stands for Noise, Vibration, and Hardness? I'm not familiar with the abbreviation. If so, they made these changes solely for this reason? I'm not ready to go there yet. An unsuspecting sheeple my have thought this was some complicated emission thing or something.
I'm very hesitant to respond to this unless you can produce a diagram or a document that shows a compressor side pressure control system in pre 2013 3.5L. The document I referred to in my earlier posts FOBDSM1202.pdf clearly indicates on page 151 that boost pressure is controlled by adjusting the turbine speed. This is done by bypassing exhaust gas around the turbine. There is no indication from the diagram or description that there is something downstream of the compressor and before the throttle to control compressor discharge pressure. Doesn't mean there isn't but let's see it.
Not minute! In fact this could be very important but lets wait until we know we're talking about the same design by having a cold hard diagram that all can see.
Just to make sure the sheep know (as well as this one!) does NVH stands for Noise, Vibration, and Hardness? I'm not familiar with the abbreviation. If so, they made these changes solely for this reason? I'm not ready to go there yet. An unsuspecting sheeple my have thought this was some complicated emission thing or something.
I'm very hesitant to respond to this unless you can produce a diagram or a document that shows a compressor side pressure control system in pre 2013 3.5L. The document I referred to in my earlier posts FOBDSM1202.pdf clearly indicates on page 151 that boost pressure is controlled by adjusting the turbine speed. This is done by bypassing exhaust gas around the turbine. There is no indication from the diagram or description that there is something downstream of the compressor and before the throttle to control compressor discharge pressure. Doesn't mean there isn't but let's see it.
Not minute! In fact this could be very important but lets wait until we know we're talking about the same design by having a cold hard diagram that all can see.
11-24-2012, 11:50 PM
#930
NVH, noise vibration and harshness. Don't be hesitant to respond, a turbo with boost controlled on the turbine side has a waste gate, and the 3.5 EB in the F150 doesn't have one, and if it did, it wouldn't dump exhaust into the intake. I own one, so I guess if you need a document or diagram I could go take a picture, but it is pretty easy to find the verification you seek grasshopper.
Wastegate Pneumatic Solenoid Valve
The wastegate (one per turbocharger) allows exhaust pressure to bypass the turbocharger's turbine, to control compressor speed (on the same shaft), and thus boost pressure. The wastegate controller is actually a mechanical-pneumatic boost pressure controller. Its boost pressure limit can be increased within a limited range by altering the pressure "seen" by the pneumatic actuator. The wastegates are only controlled indirectly by the PCM via the wastegate pneumatic solenoid.
A high pressure on the wastegate actuator's diaphragm tends to open the wastegate. The solenoid valve normally connects compressor out pressure (boost) to the wastegate actuator's diaphragm, resulting in the regulation of maximum boost pressure (to a constant value). Using the wastegate vent solenoid to partially vent (reduce) that control pressure increases the regulated maximum boost.
As the compressor outlet pressure increases, a pneumatically powered actuator opens each turbocharger wastegate to limit compressor outlet pressure. The wastegate pneumatic solenoid valve modulates that feedback pressure to increase the boost pressure limit. A duty cycle of 100% vents feedback thus eliminating any wastegate controlled boost limit. A duty cycle of 0% results in the base boost limit of approximately 5 psi gauge.
Can you say WASTEGATE! Say it a few times to yourself and then slowly exhale. Open your eyes, there, don't you feel better.
And don't badmouth grasshoppers. They're good insects. They eat other insects.