Very Impressed . . .

[skyshadow07]

HUH? I'm talking commanded PSI. What you see during first spool, before the wastegate or right as you close the throttle should be erroneous. Why would anyone bring up any other number when talking boost?

 

[76FoMoCo]

I have had some weird conversations bout all i can say.

 

[jasong_10]

I got the 2.5bar when I started tuning as well. I don't think my engine is going to see over 21.5ish psi of boost so I didn't see a reason to go with the 3bar.
But hold the phone, I too have a unleashed tune that has been dialed in with over 16 revisions and he has me at 15psi. He has you at 19psi?? What mods do you have?

Just the colder NGK plugs and the 2.5 map. 76FoMoCo is correct though, the 19.5 lbs was the highest reading that the handheld captured, it probably wasn't that high consistently. If I think of it I'll go for a ride and see what it's reading throughout the pulls.

 

[skyshadow07]

Or just look at the commanded PSI on your log.

 

[76FoMoCo]

Ya command and what psi your getting is a good look if you have a boost leak too.

 

[jasong_10]

Or just look at the commanded PSI on your log.

I haven't datalogged anything myself, the previous owner did the handheld, plugs, and map originally. I just re-installed the 2.5 map and agressive tune as I had the previous owner put it back to stock (except the plugs) when I took delivery of the car. So I'm still learning my way around the handheld, lol.

 

[jasong_10]

Ya command and what psi your getting is a good look if you have a boost leak too.

Which way would the discrepancy be if there was a leak, commanded higher than measured, or vice versa? Thanks.

 

[76FoMoCo]

Command is always higher than the following boost. The better the following boost the better.

 

[jasong_10]

So following boost should be close to commanded boost, and if it's too much lower than that indicates a boost leak?

 

[jasong_10]

Went for a ride tonight to air dry the car after the final wash of the season and make sure there weren't any issues with the new tires and rims, so I grabbed the handheld to see what it showed for boost during a pull. It averages 13.5 during the pull and appears to spike higher (17.5-18.5) right before/during shifts. My handheld only lists one boost option to monitor so I'm not sure whether I'm seeing commanded or following.