I'm wondering if anyone has ever checked their boost guage against a map sensor to see how accurate it is. I had the laptop hooked up to my afc today, and I thought I was running 11 psi all this time. Well the highest I saw was 9.2 falling to 8.6 psi. I have an autometer boost guage. Just wanted to see if anyone has ever done this, and if your guage was accurate. Please list brand if it was.
How accurate is your boost guage??
- Thread starter gboromsp
- Start date
gboromsp said:
I switched from autometer to stewart warner and noticed a large decrease in my boost reading. Stock went from 7 with the autometer down to 5 or 5.5 with the stewart warner gauge. I datalogged with my afc with the stew warner hooked up and the numbers were very close. Don't know if these numbers are consistent with other people switching gauges this was just my experience.
I have a stewart warner and I'm pretty sure it reads 1-1.5psi lower than my actual boost. My Zeitronix wideband w/ electronic boost sensor gives higher numbers. Actually now that I think of it, the SW reads less vacuum than the zeitronix also. You never can know which guage to trust though. (shrug)
Heh, yeah i'd wager that the zeitronix is closest to the real pressure, but even electronic sensors can be calibrated wrong.
I actually have a third boost sensor, in my AFC. I can't remember what it reads for max boost, but when the engine is off I get -.8inHg from it, so I know that one is definitely not perfect.
I actually have a third boost sensor, in my AFC. I can't remember what it reads for max boost, but when the engine is off I get -.8inHg from it, so I know that one is definitely not perfect.
Mine's hooked up according to the post in the How-To forum (http://www.msprotege.com/forum/showthread.php?t=50210&highlight=boost).
What are the vacuum hoses going to in my picture, by the way?
What are the vacuum hoses going to in my picture, by the way?
- :
- 2003.5 Laser Blue MSP
sabishii said:Mine's hooked up according to the post in the How-To forum (http://www.msprotege.com/forum/showthread.php?t=50210&highlight=boost).
What are the vacuum hoses going to in my picture, by the way?
Mine is hooked up the same way. Are there boost gauges better that others. Im not looking at looks, since defi gauges look so sexy, but functionalty. When I turn my car off, and its been sitting over night the next day my boost gauge reads between 0-1psi, closer to 1. But over the summer it never did that. But when the car is on, it still reads the same boost as before.
you guys need to stop buying these PS autometer guages,especially the VAC/BOOST versions.
if you must go for autometer,then get the boost only.
I tried to warn people about how bad these gauges are(the lower series) a long while ago,but no one would listen,they said I was full of s***.
if you must go for autometer,then get the boost only.
I tried to warn people about how bad these gauges are(the lower series) a long while ago,but no one would listen,they said I was full of s***.
