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5280vvti
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5280vvti Mar 29, 5:32am - #138284 

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newb question about boost gauge...


Is it entirely neccessary to have FI to need a boost gauge? Reason why I ask is, don't they measure vaccum to? Would that be important to moniter at all? (As important as volts anyway?)
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Rocketman
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Rocketman Mar 29, 5:35am - #138285 

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It isn't...but it is nice to keep an eye on stuf like that! thumbsup
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5280vvti
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5280vvti Mar 29, 5:40am - #138286 

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Originally Posted by Rocketman
It isn't...but it is nice to keep an eye on stuf like that! thumbsup


So it would still "make sense" to get the gauge without have FI then?
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LostAngel
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LostAngel Mar 29, 6:19am - #138287 
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Originally Posted by 5280vvti
Originally Posted by Rocketman
It isn't...but it is nice to keep an eye on stuf like that! thumbsup


So it would still "make sense" to get the gauge without have FI then?

There might be another gauge out there besides the boost gage. It could save you some money.
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spaztikid
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spaztikid Mar 29, 6:51am - #138288 
dikitzaps
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they do mesure vaccum... thats why on boost gauges, the numbers go into the negatives thumbsup
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5280vvti
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5280vvti Mar 29, 3:16pm - #138289 

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Okay, I wasn't sure if the big "BOOST" on there and not being able to back that up would be ricey(I might be looking at a nitrous oxide kit later on). I'm looking at the TRD boost gauge with the pillar.

I get the idea of psi and everything, but how would "vaccum" be defined in this sense. How much air the engine is sucking in?

Thanks again for the replys guys, greatly appreciated smile
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hybridcelica
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hybridcelica Mar 29, 6:40pm - #138290 
2000 silver/blue Toyota Celica
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virgin islands
Originally Posted by 5280vvti



I get the idea of psi and everything, but how would "vaccum" be defined in this sense. How much air the engine is sucking in?

Thanks again for the replys guys, greatly appreciated smile


very good question!
alot of guys run boost and dont get the gauges that go negative(vacuam) i like to see the vacuam cause it tells what state the motor is in at or off idle.
esp.if a hose or line is off or kinked etc.

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drkramm
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drkramm Mar 29, 10:03pm - #138291 
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vacume when your engine is trying to suck more air then the box can provide such as the moment you ram the throttle the engine is trying to suck air but the Turbo isn't spinning enough yet

hey thats a 20 minute phone call
"if i have seen farther it is by standing on the shoulders of giants"
derek: do you know that non dairy cream is flamable
Jennie: ...derek..what did you do
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drkramm
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drkramm Mar 29, 10:04pm - #138292 
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i would get oil pressure, oil temp or a/f all of which are important on any car

hey thats a 20 minute phone call
"if i have seen farther it is by standing on the shoulders of giants"
derek: do you know that non dairy cream is flamable
Jennie: ...derek..what did you do
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SatinSilverGTS
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SatinSilverGTS Mar 29, 10:15pm - #138293 

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Indy
Originally Posted by drkramm
i would get oil pressure, oil temp or a/f all of which are important on any car
Ditto thumbsup

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DoubleTap
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DoubleTap Mar 29, 10:33pm - #138294 
1991 White Toyota Celica GT
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A boost gauge on a non-boosted application becomes a Manifold Pressure Gauge. The lower the pressure, the harder your engine is working. If you go up a hill at constant speed/RPM, you should see a drop in manifold pressure.
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5280vvti
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5280vvti Mar 29, 11:10pm - #138295 

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Thanks for the replys guys, they are much appreciated. Now I jsut need to decide whether or not to get the gauge
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VSGTS14
05 WRB
VSGTS14 Mar 29, 11:38pm - #138296 

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having it on a non FI engine is pointless really.

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drkramm
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drkramm Mar 30, 12:55am - #138297 
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yea i would get many other gauges before that ... like i said before get oil or a/f ... a/f is the easyest all you need to do is tap into a wire on your o2 sensor (and power of course) and you get your little lights

hey thats a 20 minute phone call
"if i have seen farther it is by standing on the shoulders of giants"
derek: do you know that non dairy cream is flamable
Jennie: ...derek..what did you do
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5280vvti
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5280vvti Mar 30, 5:54am - #138298 

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Okay so the the A/f ratio gauge is measured as lean/rich etc. right? What's each one mean, and how does the mix. become rich or lean?
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