How accurate is your boost guage??

[genius]

hmmmm..... i read like 16 at vacuum???? My boost seems like it would be right, being at 7, but i have nothing to reference to check it.... any reason my vacuum reading would be so low??

Easy... either you have your A/C on, your defroster on, or you have a vac leak. If it is the latter and you have stock hoses, you need to look around your T's. The stock T's crack easily. Most likely that is where the leak is. You should get it fixed. For starters, replace all your lines with silicone.

 

[BlkZoomZoom]

I'll stick with the AVC-R all of you bought me for now.

That has been noted for my further Googling later on, though. Thanks.

Actually, coming from a tech, what do you think about the accuracy of gauges? Be kinda interesting coming from someone working on the mechanical side vs electronical side as I was.

I went with the autometer, for a simple reason. It's mechanical, less parts to break and a very simple set-up.

As far as accuracy, let's just say it was within .5psi up to 10psi and around .7-1.0 over 15psi when gauged against the Vw tool. Of course I really don't think the accuracy matters at all. Who really cares if it runs 10psi or 11psi? Too me, the consistancy is what actually matters. And the autometer gauge I have has always been consistant. If you tune the car on a gauge that reads 10psi and then switch to a gauge that reads 13psi does it matter? No. Your still pushing the same amount of air, the tune is still going to be the same.

 

[wicked]

I went with the autometer, for a simple reason. It's mechanical, less parts to break and a very simple set-up.

As far as accuracy, let's just say it was within .5psi up to 10psi and around .7-1.0 over 15psi when gauged against the Vw tool. Of course I really don't think the accuracy matters at all. Who really cares if it runs 10psi or 11psi? Too me, the consistancy is what actually matters. And the autometer gauge I have has always been consistant. If you tune the car on a gauge that reads 10psi and then switch to a gauge that reads 13psi does it matter? No. Your still pushing the same amount of air, the tune is still going to be the same.

you definatly have a good point,I just like to know what my actual boost is.
my last autometer mech vac/boost gauge was -3 psi off at 12 psi,and I was on a stock engine,surprised it didn't pop.

 

[t3ase]

I went with the autometer, for a simple reason. It's mechanical, less parts to break and a very simple set-up.

As far as accuracy, let's just say it was within .5psi up to 10psi and around .7-1.0 over 15psi when gauged against the Vw tool. Of course I really don't think the accuracy matters at all. Who really cares if it runs 10psi or 11psi? Too me, the consistancy is what actually matters. And the autometer gauge I have has always been consistant. If you tune the car on a gauge that reads 10psi and then switch to a gauge that reads 13psi does it matter? No. Your still pushing the same amount of air, the tune is still going to be the same.

There inlies a point against your own. "If you tune the car on a gauge that reads 10psi" More and more users are coming on here saying their gauges are off. If you're booting "10" psi and it's actually 13, that's a *SLIGHT* difference. Especially when you start factoring in other conditions such as driving habits, engine condition, elevation, temperature, etc. 10 may be okay on one car but 13 could kill the next. Maybe 10 on that same car wouldnt have.

 

[wicked]

I still use auto meter,I just stick with the boost only,not the vac/boost.

 

[wicked]

There inlies a point against your own. "If you tune the car on a gauge that reads 10psi" More and more users are coming on here saying their gauges are off. If you're booting "10" psi and it's actually 13, that's a *SLIGHT* difference. Especially when you start factoring in other conditions such as driving habits, engine condition, elevation, temperature, etc. 10 may be okay on one car but 13 could kill the next. Maybe 10 on that same car wouldnt have.

it could also explain some HP differences between members here.

 

[BlkZoomZoom]

There inlies a point against your own. "If you tune the car on a gauge that reads 10psi" More and more users are coming on here saying their gauges are off. If you're booting "10" psi and it's actually 13, that's a *SLIGHT* difference. Especially when you start factoring in other conditions such as driving habits, engine condition, elevation, temperature, etc. 10 may be okay on one car but 13 could kill the next. Maybe 10 on that same car wouldnt have.

I don't really see how it contradicts itself. I guess it all depends on how you tune it. You shouldn't tune a car for a certain psi, you should tune it for either a hp level or a certain goal. If you have the correct timing, a/f and egt for the set-up then it will survive alot longer than a non-tuned set-up.
Now if you just turn the boost controller up to say 12psi because the guy 13 states away says he did it, then yes you are asking for trouble. But no-one actually does that, do they?

 

[wicked]

I don't really see how it contradicts itself. I guess it all depends on how you tune it. You shouldn't tune a car for a certain psi, you should tune it for either a hp level or a certain goal. If you have the correct timing, a/f and egt for the set-up then it will survive alot longer than a non-tuned set-up.
Now if you just turn the boost controller up to say 12psi because the guy 13 states away says he did it, then yes you are asking for trouble. But no-one actually does that, do they?

it applies a lot to things like this forum.If I showed a dyno sheet that showed turbo kit A with 250HP @ 13PSI,and another person showed turbokit B kit with 300HP @13PSI.
both were useing autometer gauges

how do we know if kit B is really out performing kit A?

 

[BlkZoomZoom]

common sense?

 

[wicked]

common sense?

may be common sense,but still relavent.

 

[BlkZoomZoom]

If you want to go that far... If you are comparing the kits hp level I would be more worried about the dyno tested on than the type of gauge used.

And no, I don't know why I am arguing a pointless point. I just like arguing with you for some reason.

 

[wicked]

If you want to go that far... If you are comparing the kits hp level I would be more worried about the dyno tested on than the type of gauge used.

And no, I don't know why I am arguing a pointless point. I just like arguing with you for some reason.

you realy do like arguing with me don't you.


but yeah,dyno's really are off,so is climate,alltitude,and every other veriable.

 

[vashthestampede]

Autometer gauges are garbage....IMHO. (thumb) Everyone has problems with them one way or another....

Vash-

 

[t3ase]

But no-one actually does that, do they?

Are you serious? (boom07)

 

[genius]

I'm with wicked here; for years I've been telling people that Autometer gauges are not accurate and they shouldn't monitor their car with them. I just had a debate with DAWIV about it this week, actually.

Now all of the sudden everyone's jumping on the bandwagon because someone *new* mentioned it.

They're bad. They're cheap, they're inaccurate and they cannot be reliable.

The boost guages or the new members? LMAO!!!!