Boost Gauge Quiery

T0MME · 19-10-14, 04:39 PM

Hello,
just fitted a mechanical boost gauge to my 1.8t
engine off reads 0
engine running reads 20 vac
flooring it reads 0
surely it should go above 0?
I've tee pieced it between and inlet manifold and fuel rail

the car runs and drives fine, pulls strongly for a stock engine..

what am i doing wrong?

Val · 19-10-14, 04:56 PM

If car is in neutral gear, you can't over 0.
Read the gauge while driving.

T0MME · 19-10-14, 04:59 PM

yes have driven the car, still reading 0 boost

Val · 19-10-14, 05:04 PM

Have you pressure tested your intake system? Any faults in vcds?

Does inlet pipe between throttlebody and IC pressurize when runing engine at idle and opening throttle with other hand?

T0MME · 19-10-14, 05:07 PM

like i said the car drives fine with no loss of power so i presume the system has no leaks, cant hear any air leeks anywhere

Val · 19-10-14, 05:12 PM

Bad gauge?

T0MME · 19-10-14, 05:14 PM

brand new? shall email the supplier tomorrow, not had one before so not sure if thats how there ment to work

Val · 19-10-14, 05:19 PM

Hm. Take it off, stand against mirror, blow in it and you should see it go around +0.3...+0.5. Lets see what you're made of.

T0MME · 19-10-14, 05:21 PM

just tried that manged to get it off the zero, so that should be working

Val · 19-10-14, 05:25 PM

I surrender

19-10-14, 04:56 PM	#2
Val Grown up member Join Date: Dec 2012 Location: 5vtq gte Posts: 177	If car is in neutral gear, you can't over 0. Read the gauge while driving.

19-10-14, 04:59 PM	#3
T0MME Grown up member Join Date: Jul 2008 Location: Gloucestershire, West Midlands Posts: 215	yes have driven the car, still reading 0 boost

19-10-14, 05:04 PM	#4
Val Grown up member Join Date: Dec 2012 Location: 5vtq gte Posts: 177	Have you pressure tested your intake system? Any faults in vcds? Does inlet pipe between throttlebody and IC pressurize when runing engine at idle and opening throttle with other hand?

19-10-14, 05:07 PM	#5
T0MME Grown up member Join Date: Jul 2008 Location: Gloucestershire, West Midlands Posts: 215	like i said the car drives fine with no loss of power so i presume the system has no leaks, cant hear any air leeks anywhere

19-10-14, 05:12 PM	#6
Val Grown up member Join Date: Dec 2012 Location: 5vtq gte Posts: 177	Bad gauge?

19-10-14, 05:14 PM	#7
T0MME Grown up member Join Date: Jul 2008 Location: Gloucestershire, West Midlands Posts: 215	brand new? shall email the supplier tomorrow, not had one before so not sure if thats how there ment to work

19-10-14, 05:19 PM	#8
Val Grown up member Join Date: Dec 2012 Location: 5vtq gte Posts: 177	Hm. Take it off, stand against mirror, blow in it and you should see it go around +0.3...+0.5. Lets see what you're made of.

19-10-14, 05:21 PM	#9
T0MME Grown up member Join Date: Jul 2008 Location: Gloucestershire, West Midlands Posts: 215	just tried that manged to get it off the zero, so that should be working

19-10-14, 05:25 PM	#10
Val Grown up member Join Date: Dec 2012 Location: 5vtq gte Posts: 177	I surrender