prosport boost Gauge reading 5psi max? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

wileymotorsports · 12-11-2011, 02:29 PM

I just installed a prosport digital boost gauge and took the car out and only got 5 boost max and at idle it stays about 22-23 vacuum. Is this normal for this gauge. I thought 7psi was stock. I kind of thinking the gauge might be 2psi off? Thanks, Kyle

codyace · 12-11-2011, 02:31 PM

I wouldn't put it past the gauges to be off, but do you have a boost cotnroller on the car? turn it a little to see if the boost gauge goes up.

We had prosports on a car once, never again. Were off by nearly 3 psi underboost.

wileymotorsports · 12-11-2011, 02:31 PM

I forgot to put I teed the gauge line into the fpr vacuum line if that would make a differance.

wileymotorsports · 12-11-2011, 02:34 PM

I dont have a boost controller yet. Arent these gauges supposed to be pretty accurate? Just wondering if the size of the vacuun line to the boost gauge could make a differance? The line the gauge came with was to short so i used a slightly bigger vacuum line (same size as whats used for the bov and wastegate) and the line the gauge came with was the size of the fpr vacuum line.

cotbu · 12-12-2011, 08:33 PM

Does the gauge read in bar? .48-.49 bar is about 7psi

wileymotorsports · 12-12-2011, 08:48 PM

No the gauge reads psi. Would the size of the vacuum line change the reading at all?

wrgibson · 12-12-2011, 09:24 PM

The size of the line shouldn't affect your reading enough to throw off the gauge. Do you know somebody who will lend you their boost gauge? Try putting another one in to see if it reads the same as the prosport.

wileymotorsports · 12-12-2011, 09:28 PM

Ok thanks for the anwser, I might just have to go buy a cheap boost gauge and see what that reads.

12-11-2011, 02:29 PM	#1
wileymotorsports Join Date: Dec 2011 Location: Arizona Age: 36 Posts: 34 Trader Rating: (0) Feedback Score: 0 reviews	prosport boost Gauge reading 5psi max? I just installed a prosport digital boost gauge and took the car out and only got 5 boost max and at idle it stays about 22-23 vacuum. Is this normal for this gauge. I thought 7psi was stock. I kind of thinking the gauge might be 2psi off? Thanks, Kyle

12-11-2011, 02:31 PM	#2
codyace Post Whore! Join Date: Dec 2004 Location: Poconos, PA Age: 40 Posts: 8,030 Trader Rating: (58) Feedback Score: 58 reviews	I wouldn't put it past the gauges to be off, but do you have a boost cotnroller on the car? turn it a little to see if the boost gauge goes up. We had prosports on a car once, never again. Were off by nearly 3 psi underboost. __________________ *Want Air Conditioning in your SR20 Swapped car? Check out www.sr20acbrackets.com for more information! Quest Alternator Conversions for SR20!* Check my Group Buy! Tired of lousy internal gates? Go external wastegate with one of my manifolds, Check out my group buy

12-11-2011, 02:34 PM	#4
wileymotorsports Join Date: Dec 2011 Location: Arizona Age: 36 Posts: 34 Trader Rating: (0) Feedback Score: 0 reviews	I dont have a boost controller yet. Arent these gauges supposed to be pretty accurate? Just wondering if the size of the vacuun line to the boost gauge could make a differance? The line the gauge came with was to short so i used a slightly bigger vacuum line (same size as whats used for the bov and wastegate) and the line the gauge came with was the size of the fpr vacuum line. Last edited by wileymotorsports; 12-11-2011 at 03:04 PM..

12-12-2011, 08:33 PM	#5
cotbu Post Whore! Join Date: Sep 2005 Location: SWFL Age: 50 Posts: 3,318 Trader Rating: (3) Feedback Score: 3 reviews	Does the gauge read in bar? .48-.49 bar is about 7psi __________________ LoverTechnologies "Half Broken Things!"

12-12-2011, 08:48 PM	#6
wileymotorsports Join Date: Dec 2011 Location: Arizona Age: 36 Posts: 34 Trader Rating: (0) Feedback Score: 0 reviews	No the gauge reads psi. Would the size of the vacuum line change the reading at all?

12-12-2011, 09:24 PM	#7
wrgibson Leaky Injector Join Date: Jan 2008 Location: Durango Age: 37 Posts: 66 Trader Rating: (0) Feedback Score: 0 reviews	The size of the line shouldn't affect your reading enough to throw off the gauge. Do you know somebody who will lend you their boost gauge? Try putting another one in to see if it reads the same as the prosport.

12-12-2011, 09:28 PM	#8
wileymotorsports Join Date: Dec 2011 Location: Arizona Age: 36 Posts: 34 Trader Rating: (0) Feedback Score: 0 reviews	Ok thanks for the anwser, I might just have to go buy a cheap boost gauge and see what that reads.