PSI with different pulley combo question...

[scottGT500]

Current mods are Revan Racing 13-6 (cai, 65 mm TB, 2.4" upper, Lund tune)...93 octane only.

I am adding 1 7/8 Headers using the o/r mid pipe, so what would be the approx PSI with the headers...

10% + 2.4" = ?
10% + 2.5" = ?
10% + 2.6" = ?

Thanks!!

 

[BOSSPOWER]

Current mods are Revan Racing 13-6 (cai, 65 mm TB, 2.4" upper, Lund tune)...93 octane only.

I am adding 1 7/8 Headers using the o/r mid pipe, so what would be the approx PSI with the headers...

10% + 2.4" = ?
10% + 2.5" = ?
10% + 2.6" = ?

Thanks!!

10% + 2.4" = 17-18 psi

 

[VFORCEJOHN]

I'm seeing 18-19 with just a 10% lower according to the oem dash gauge. colder days it'll touch on 20 psi under hard accel.

How accurate this is??? never checked.

 

[BOSSPOWER]

I'm seeing 18-19 with just a 10% lower according to the oem dash gauge. colder days it'll touch on 20 psi under hard accel.

How accurate this is??? never checked.

From my tuner and AeroForce they have both told me the factory boost gauge is not very precise. The boost that I expressed that I saw was what I got from my dyno reading.

Manuel

 

[scottGT500]

How much difference are we talking about between the OEM guage and "actual" PSI?

Thanks!!