Why 3 bar MAP?

[4sfed]

if 1 Bar is 14.5 PSI, why are people changing our the 2 Bar MAPs for 3 Bar MAPs? Wouldn't a 2 Bar MAP be good to 29-ish PSI?

 

[OmaHahn]

2 BAR or 3 BAR simply mean two or three times above barometric pressure. The sensor will measure each direction, vacuum or pressure.

For reference:

• 1 BAR is for a normally aspirated engine
• 2 BAR will handle a forced induction up to 14.5 psi of boost
• 3 BAR will handle a forced induction up to 29.0 psi of boost

 

[4sfed]

2 BAR or 3 BAR simply mean two or three times above barometric pressure. The sensor will measure each direction, vacuum or pressure.

For reference:

• 1 BAR is for a normally aspirated engine
• 2 BAR will handle a forced induction up to 14.5 psi of boost
• 3 BAR will handle a forced induction up to 29.0 psi of boost

AH! Excellent! Thanks!

 

[SHOdded]

For most people running the transverse engined turbos, they really don't need the 3 bar unless boost is above 14.7 psi. That includes boost spikes. Now if you are running a tune and it is "hot", you could easily exceed that boost level on a regular basis, not just on spikes. So the 3 bar will give you the resolution to handle the boost correctly and safely.

 

[Raging Bull]

What is a Hot tune ?

 

[SHOdded]

a tune that pushes the programming of the car to perform at its max limits - safe limits from reputable tuners, unsafe limits from shady ones.

 

[Raging Bull]

I’m thinking the stage 1 pkg from Livernois is my choice for the tune.

 

[SM105K]

I’m thinking the stage 1 pkg from Livernois is my choice for the tune.

Do it, you will be pleased.

 

[OmaHahn]

I’m thinking the stage 1 pkg from Livernois is my choice for the tune.

What year is your SHO? On the newer Gen there's no Stages. It's based on octane level: 91 tune, 93 tune, 100 race tune, etc. I have the 93 tune from LMS and love it!!!!

 

[Raging Bull]

2017 it’s the stage 1 pkg from lms - tuner , cai Tstat , plugs then a 3 bar map.

 

[Raging Bull]

The tunes will be stock, 87,91,93,93+ Not really sure of everything available yet til I send my info to them. Idk ?