[Tronner]

I am in Denver, 5200 feet, and often go up to the mountains where we hit 11,000 going over some of the passes.

I just installed the Procede last night, and on Map 1, with my initial target set to 13.5 psi and a target of 16, the boost gauge and datalog show I am hitting about 12 psi. It's also showing a MAP value of -2.7 without the car on sitting in my garage, which sounds about right as atmospheric pressure here is 11.9 or so.

My question is, how does the ProCede calculate or see my boost? Is it thinking I'm hitting my initial target because the 12 psi I'm seeing plus 2.7 equals 14.7 psi? Or is there something wrong since I'm only seeing 12 psi when it is supposed to be at least 13.5? If the former is true, then I would assume I'll only ever get to 13.3 psi because my limit is 16.

I don't want to push the turbos too hard, but I'd also like to run at least 14 psi or so up here.

[Tronner]

Oh, I should also mention that I did turn the barometric pressure adjustment to ON in the User Tunable settings. I suppose that could have something to do with the lower boost.

[mattsfeir]

I've always wondered about the barometric offset also.

[DefactoM6]

Originally Posted by Tronner

I am in Denver, 5200 feet, and often go up to the mountains where we hit 11,000 going over some of the passes.

I just installed the Procede last night, and on Map 1, with my initial target set to 13.5 psi and a target of 16, the boost gauge and datalog show I am hitting about 12 psi. It's also showing a MAP value of -2.7 without the car on sitting in my garage, which sounds about right as atmospheric pressure here is 11.9 or so.

My question is, how does the ProCede calculate or see my boost? Is it thinking I'm hitting my initial target because the 12 psi I'm seeing plus 2.7 equals 14.7 psi? Or is there something wrong since I'm only seeing 12 psi when it is supposed to be at least 13.5? If the former is true, then I would assume I'll only ever get to 13.3 psi because my limit is 16.

I don't want to push the turbos too hard, but I'd also like to run at least 14 psi or so up here.

It could also be what the autotune is determining is best, given the high DC it needs to run in order to make boost, presumably lower AFRs, and 91 octane (I'm assuming that you guys get the shaft just like UT does on that one). What other mods do you have?

[Tronner]

Originally Posted by DefactoM6

It could also be what the autotune is determining is best, given the high DC it needs to run in order to make boost, presumably lower AFRs, and 91 octane (I'm assuming that you guys get the shaft just like UT does on that one). What other mods do you have?

Other mods are:
AFE CAI
Borla catback with race pipes
AMS FMIC
AR Oil Cooler

I did notice today when I got in it that the boost target had bumped from 13.5 to 15.2 after some pulls last night, but the Vishnu gas-n-gauge showed about 12-13 psi

[Jeff@TopGearSolutions]

At high altitutde you would need to push the turbos harder to make the same boost at sea level... its possible autotune noticed you were generating excessive heat(in the form of IAT and knock retard) in trying to meet 13.5 PSI boost, (16 psi MAX) and autotuned it lower to 12.

It appears you have a misconception about your settings and autotune.

Map 1 is 13.5 PSI, with a + or - 5 PSI movement. It will only go to a MAX of 16 PSI.

[Bimmer This]

I'm also in the mile high city. 12 psi sound just about right for our settings. Do you have any other mods?

[Tronner]

Originally Posted by JPSlick

At high altitutde you would need to push the turbos harder to make the same boost at sea level... its possible autotune noticed you were generating excessive heat(in the form of IAT and knock retard) in trying to meet 13.5 PSI boost, (16 psi MAX) and autotuned it lower to 12.

It appears you have a misconception about your settings and autotune.

Map 1 is 13.5 PSI, with a + or - 5 PSI movement. It will only go to a MAX of 16 PSI.

But wouldn't the very first pull target 13.5 and then pull it back? The first runs were at barely over 10 psi on the gauge, then it went up from there after a few pulls, so it definitely didn't start off strong then pull back from too much heat. It started off low (I have to think because of the barometric pressure setting or because it's adjusting for MAP or something) and then it went up from there a little.

[Tronner]

Originally Posted by Bimmer This

I'm also in the mile high city. 12 psi sound just about right for our settings. Do you have any other mods? I am currently 14.3 psi autotunes.

That's what I need to hear, so you're seeing 12 psi on the gauge, but the Autotune setting says it's targeting 14.3? Mods are a couple of posts up, but mine did go up to 15.2 at one point yesterday (the autotune setting). I was seeing 12+ on the gauge though.

[Bimmer This]

You're correct. It really depends on the weather. If it's cooler outside, your IAT's are low so you might see it adjust boost settings a little higher.

[ar design]

Downpipes will definitively help get a little more boost! But You should be able to get up to 15psi on pump.

[Jeff@TopGearSolutions]

Originally Posted by Tronner

But wouldn't the very first pull target 13.5 and then pull it back? The first runs were at barely over 10 psi on the gauge, then it went up from there after a few pulls, so it definitely didn't start off strong then pull back from too much heat. It started off low (I have to think because of the barometric pressure setting or because it's adjusting for MAP or something) and then it went up from there a little.

It will target for 13.5, but maybe not right away either because there is also a wastegate tuning aspect.

First pull is generally weak... even for me at sea level. Keeping that in mind, with your elevation its possible it took that much longer to reach your desired 13.5 and have the wastegates and autotune do its thing.

With the new wastegate autotune, your car isnt in an area elevation wise where normal wastegate duty cycles are needed to achieve 13.5 PSI, so its likely that needed to be corrected via autotune as well.

Datalogs always help. we can then see your duty cycle of the wastegates and other things like aggression level.

As it is im just shooting blind here...

Email it to shiv if all else....

[Bimmer This]

Originally Posted by ar design

Downpipes will definitively help get a little more boost! But You should be able to get up to 15psi on pump.

Yeap, so stop wasting time and hit up Andrew for some DP's.