Boost gauges reading Q

[QCMSP]

I have just install a boost gauges in my msp and here my question

IT's normal to read aprox 20 vac when the engine is running on neutral, 0 psi at low speed and boost (7psi) only when the rpm is high ???

If you don't understand what Im talking about feel free to ask me more details.

Tanks

 

[jersey_emt]

Yes.

You should see 7psi when you are pretty heavy on the accelerator and over ~3000 RPMs. It will probably fall down to 5-6psi as you get closer to redline (assuming you are stock)

20 vac is normal for idle.

 

[QCMSP]

Tanks you very much.

Yes.

You should see 7psi when you are pretty heavy on the accelerator and over ~3000 RPMs. It will probably fall down to 5-6psi as you get closer to redline (assuming you are stock)

20 vac is normal for idle.

 

[ca_deal1]

Everything is normal

 

[ZenProtege]

does anyone know what normal vac should be in kpa? thats what my boost gauge reads

 

[orng1]

does anyone know what normal vac should be in kpa? thats what my boost gauge reads

search kg/mm I posted and got a reply with a good link that has about everything. g/l search is your friend

 

[mspeed101]

does anyone know what normal vac should be in kpa? thats what my boost gauge reads

Not sure mine says .99 hope that helps

 

[ZenProtege]

mines .76 at idle

 

[ca_deal1]

Mine reads at -20psi

 

[msp03.5]

My vac is reading at 15-16. Do you think I have a leak or worse? If any one can give me any info I would greatly appreciate it. I looked around the site a bit but could not find much info.
Albert

 

[BOOSTR]

You probably have a slight leak. 16-22 is the normal range. My Msp seems to like 20 with a/c on and 22 with it off. Just check all of your fittings and clamps/zipties.

 

[Vampyre]

my vac reads 18 no ac and 16 with ac on

 

[msp03.5]

Cool, Thanks guys. I appreciate it.