MIBPreacher Posted March 14, 2006 Share Posted March 14, 2006 I probably sound stupid for asking this, but what is the purpose of the gauge anyways? I bought one off of ebay that came with the single plastic pillar mount. I installed it today and tied it in with my Manifold connection, it does look cool to see the gauge move and all, but I was just wondering. I show 22 on my gauge at idle, 0 at full throttle. Thanks, Rick Quote Link to comment Share on other sites More sharing options...
skipzoomie Posted March 14, 2006 Share Posted March 14, 2006 For me, the gauge is a tuning instrument. It can tell me if my rings are still sealing well. If the valves are sealing and if there are any vacuum leaks. It also is a great instrument for tuning carbs. At wide open throttle there should be little to no vacuum. So that is OK. At 22 at idle is great. Quote Link to comment Share on other sites More sharing options...
Tim240z Posted March 14, 2006 Share Posted March 14, 2006 You bought something without even knowing why you wanted it, or what it is used for? Quote Link to comment Share on other sites More sharing options...
MIBPreacher Posted March 14, 2006 Author Share Posted March 14, 2006 Lol, when you say it like that you make it sound bad. Just after I bought my car, I was in the process of buying a couple of gauges (temp, vac, etc) but needed the money for other needless things so I couldnt. Then last week, I found this setup on Ebay for $14.26 and it came with the pod. i won it at that price and I got it today, I couldnt pass up the deal since brand new I probably would have spend 50.00 for both pieces or more at the Autozone or Advance autoparts. I put it in at work and it works great, but I had to wonder, what is the purpose for the guage. How many times have you bought something just to buy it cause it looked cool? Quote Link to comment Share on other sites More sharing options...
TheNeedForZ Posted March 14, 2006 Share Posted March 14, 2006 You bought something without even knowing why you wanted it, or what it is used for? Optimus Prime told him to buy it. Quote Link to comment Share on other sites More sharing options...
CruxGNZ Posted March 14, 2006 Share Posted March 14, 2006 Optimus Prime told him to buy it. Holy crap, I'm in tears! Haha Quote Link to comment Share on other sites More sharing options...
Tim240z Posted March 14, 2006 Share Posted March 14, 2006 Autobots!: Transform! How many times have you bought something just to buy it cause it looked cool? Plenty.....but I knew 'why' I was buying it and what I would use it for. Just ribbin' ya man! I have been told that I have a "gauge fettish" by someone on this board. I like to know what is going on with all the systems when I am driving, although I have never felt the need to install a vac gauge... Tim Quote Link to comment Share on other sites More sharing options...
MIBPreacher Posted March 14, 2006 Author Share Posted March 14, 2006 Yes, I like the transformers, thats what I grew up with. My kids, 1 9yo and 1 4yo, even said my car looked like one from the cartoons I rented from the video store. I thought that was pretty cool. But not one time did I make fun of TheNeedforZ's carebear collection, or Tims mylittlepony obsession. No that would be just childish. I asked a honest question, thanks skipzoomie for the honest response. Quote Link to comment Share on other sites More sharing options...
Tim240z Posted March 14, 2006 Share Posted March 14, 2006 Oh lighten up! :icon56: Quote Link to comment Share on other sites More sharing options...
TheNeedForZ Posted March 14, 2006 Share Posted March 14, 2006 That was just a little joke. I wasn't making fun of you, my bad, my bad. If you are a father but are still in touch with the fun side that makes you cool. Back when I was growing up, my parents wouldn't even allow Nintendo or whatever. I would put a lot of gauges in my car in an effort to monitor everything even though I don't need them...that's just the kind of thing I would do. Quote Link to comment Share on other sites More sharing options...
mom'sZ Posted March 14, 2006 Share Posted March 14, 2006 It can also be used to monitor fuel milage. When it reads 18-22 your getting 20 -30 mpg and when it's reading 0.. er... well... your getting 2 - 3 mpg Quote Link to comment Share on other sites More sharing options...
240hoke Posted March 14, 2006 Share Posted March 14, 2006 My bmw has a vaccum gauge from the factory. They call it a MPG gauge lol. It works in conjuction with the speedo to give you a average miles per gallon readout on the trip comuter. Its pretty nifty on trips, but other then being nifty its pretty worthless, I would rather have a boost gauge Quote Link to comment Share on other sites More sharing options...
Drax240z Posted March 14, 2006 Share Posted March 14, 2006 Tuning mixture is what I use it for... Quote Link to comment Share on other sites More sharing options...
Brad-ManQ45 Posted March 14, 2006 Share Posted March 14, 2006 It's a great indicator for seeing that you have 1 or more valves not sealing properly - the needle will fluctuate at idle....a good amount. Quote Link to comment Share on other sites More sharing options...
Lewis Maudlin Posted March 15, 2006 Share Posted March 15, 2006 You could get a boost/vacuum gauge and see how much boost you generate with 10 of these hooked in series. http://www.electricsupercharger.com/ Quote Link to comment Share on other sites More sharing options...
zero Posted March 15, 2006 Share Posted March 15, 2006 240z hoke, I always wondered how the mpg gauge on my friends old 528e worked. It never occured to me that it was really a vaccuum gauge. That explains alot. Thanks haha. Quote Link to comment Share on other sites More sharing options...
2126 Posted March 15, 2006 Share Posted March 15, 2006 Hey, you could have your significant other put the gauge to the test! The results would give you a good idea of how well they can...........you know! Quote Link to comment Share on other sites More sharing options...
Some-Guy Posted March 16, 2006 Share Posted March 16, 2006 i think those e-rams are stupid some how i just dont see them working......and how does vacum relate to mpg I dont get it? Quote Link to comment Share on other sites More sharing options...
boodlefoof Posted March 16, 2006 Share Posted March 16, 2006 Vacuum can be used as a relative measure on how much load is put on the engine - how hard you're asking the engine to work (or how much throttle you're giving it). As you put more load on the engine, vacuum drops. When you're coasting in neutral, there is no load on the engine (other than internal friction and weight) and so vacuum is at its highest point. When you're at WOT, you're putting a big load on the engine and vacuum will drop to zero. So, you'll consume less gasoline driving at 4k rpm with 14'' vacuum than you would be at 2k rpm with a 0'' vacuum reading. Think about the gas pedal position in both situations... in the first, you're just using enough gas to keep the car cruising at 4k. In the second, you're accellerating from a low rpm and your foot is down. Quote Link to comment Share on other sites More sharing options...
BLOZ UP Posted March 16, 2006 Share Posted March 16, 2006 So, you'll consume less gasoline driving at 4k rpm with 14'' vacuum than you would be at 2k rpm with a 0'' vacuum reading. Think about the gas pedal position in both situations... in the first, you're just using enough gas to keep the car cruising at 4k. In the second, you're accellerating from a low rpm and your foot is down. ...and the stock Z31 computer will go into open loop and just drop fuel like there's no tomorrow when you go passed a certain throttle level, thus contributing to crappy mileage. Quote Link to comment Share on other sites More sharing options...
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