2014, how many psi?

From what I read, it looks like the 13’s-14’s make about 15 psi. I took the car out today and the car made 17. Today was a 39 degree day and I did a third gear pull only up 5,000 rpms.



Does anyone know what the psi should be?

Thanks


Sent from my iPhone using the svtperformance.com mobile app

14-15psi

Cold day maybe have added a pound but 2-3 sounds strange.
Any mods?
-J

duplicate

The car has a FRPP 65mm throttle body and a JLT carbon fiber 127mm intake. It went from 16-17psi.

Ok that makes sense.
Good rule of thumb especially on a PD blower car:

Reduce restriction before blower equals More boost
Reduce restriction after blower equals Less boost

Stock being 15# on a cold day now is 17# with a TB and JLT.
-J

biminiLX said:

Ok that makes sense.
Good rule of thumb especially on a PD blower car:

Reduce restriction before blower equals More boost
Reduce restriction after blower equals Less boost

Stock being 15# on a cold day now is 17# with a TB and JLT.
-J

Click to expand...

Thank you so much.

biminiLX said:

Ok that makes sense.
Good rule of thumb especially on a PD blower car:

Reduce restriction before blower equals More boost
Reduce restriction after blower equals Less boost

Stock being 15# on a cold day now is 17# with a TB and JLT.
-J

Click to expand...

I thought the stock boost measurement gauge on these cars was always high, like a 1lb or 2lb PSI off?

fearthesnake said:

I thought the stock boost measurement gauge on these cars was always high, like a 1lb or 2lb PSI off?

Click to expand...

The stock boost gauge is inferred, and is inaccurate if the car has a tune. He's definitely tuned running a 127 CAI.

RBB said:

The stock boost gauge is inferred, and is inaccurate if the car has a tune. He's definitely tuned running a 127 CAI.

Click to expand...

Hi,
You are correct. I have a SCT tune on the car.

My dash PSI gauge can read 18-19.5 boost at WOT. But more accurate direct connect boost gauges at two different shops read max at 16.5psi boost with my FBO's. I have my psi boost displayed when driving mostly watching how/if it's entering boost at all. The dash gauge is fun to look at and can be reliable in the event of a vacuum/boost leak .....but it's not accurate.