How to read this dyno chart?

[thenixtone]

Sup guys,

 

In another thread I mentioned my car came with a dyno sheet which I think is wrong / has been tuned since then.

It's got manifold gauge pressure on the right and it hit 31 psi. As far as I know this isn't boost pressure, it's engine pressure + boost pressure?

Or something like that.. What pressure does the GTT run at stock? Trying to work out how much boost it was at during this run.

 

Cheers

[KiwiRS4T]

Post up the chart. Stock boost will be 10 or 12 or so depending on the setup. Boost number on the chart should be the actual boost.

[GTSBoy]

Stock boost on a Neo is only 7 psi.  5 at the wastegate spring, + 2 from the stock bleed valve.  With better exhaust etc it might run a little higher, but not 12.  Takes a boost controller to get it above 10 usually.

There's no such thing as "engine pressure + boost pressure".  31 psi makes no sense unless you have a very large turbo shoving a lot of air down the engine's throat.  How much power did it make?

[thenixtone]

  On 21/02/2019 at 7:35 AM, GTSBoy said:

Stock boost on a Neo is only 7 psi.  5 at the wastegate spring, + 2 from the stock bleed valve.  With better exhaust etc it might run a little higher, but not 12.  Takes a boost controller to get it above 10 usually.

There's no such thing as "engine pressure + boost pressure".  31 psi makes no sense unless you have a very large turbo shoving a lot of air down the engine's throat.  How much power did it make?

Expand  

That's the one I mentioned in the other thread making 181kw. Manifold gauge pressure reads 31psi. It's definitely a lot more than 181kw, GT3076, pulls quite hard, e.g I can hit 16psi in second gear easily

[Ben C34]

Post the sheet

 

[thenixtone]

 

I dunno, this was exactly a year ago, it must have had the bigger turbo put on and retuned because its definitely not 180kw

[Ben C34]

Oh man. Top line is power, read numbers on left. 

Bottom line is boost, read numbers on the right.  

[thenixtone]

Oh wow, I'm an absolute nugget of a human.

 

Yeah okay, it's wrong then. Looks stock in the chart as per what you guys have said. 

[Ben C34]