Where and how do you hook up a drive pressure gauge? They had one on my '04 for testing but I'd like to install a permanent one now. Pics would help a lot. Thanx!
Tap the exhaust manifold 1/8NPT
Connect a lenght of hard tubing...copper 1/8" line works but plugs up frequently. I used 1/4" stainless brake line.
Run a few feet of that then adapt over to 1/8" nylon bost gauge line...run that into the cab to an extra boost gauge and you're done.
I use 100 psi gauges for all 3 of my "boost" gauges.
One primary boost, one manifold boost and one drive pressure
IMHO having the same gauges makes it easier to compare reading at WOT.
Tap the exhaust manifold 1/8NPT
Connect a lenght of hard tubing...copper 1/8" line works but plugs up frequently. I used 1/4" stainless brake line.
Run a few feet of that then adapt over to 1/8" nylon bost gauge line...run that into the cab to an extra boost gauge and you're done.
I use 100 psi gauges for all 3 of my "boost" gauges.
One primary boost, one manifold boost and one drive pressure
IMHO having the same gauges makes it easier to compare reading at WOT.
I run compound turbos. Primary boost is only the boost # from my low pressure turbo.
Manifold boost is the total pressure from both turbos where it enters the motor.
Depending on the gauge you may or may not have to add a pressure snubber to keep it readable. Both the Autometer and Isspro would bounce too much in the manifold without the snubber, may have been location, but I am not sure.
Went to the electric one and moved it to the backpressure sender location on the 7.3 (front of manifold) and the issues stoped. Took some programing work by Isspro to buffer it out on the Performax and EV2, but there is no bounce now.
I tee'd mine into where the backpressure sensor goes. On the 7.3 you can hang the stock sensor in the atmosphere but on the 6 leaker you have to keep the stock sensor reading manifold pressure to keep the VGT working.
You can watch the drive pressure on this video, top is drive pressure, second is boost. Sorry for the video quality, hard to hold it still on the coast roads.
Watching it again, the drive pressure gauge is a 0-100psi and the boost is a 0-60psi...
IRRC Auto meeter makes a buffer to put between the exhaust and the guage. i like the idea of an electric gauge better. I have a BPG and it's right at the Y comming up from the up pipes.
My guage gets stuck evey now and then. I just seperate the copper line form the ferrell and blow it out. I'm betting that the guage will quit after a bit more abuse.
I ran a isspro snubber to get rid of the pressure spikes... and the copper is where it would plug all the time. It never killed the gauge, but I got tired of cleaning it all the time!
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