schnellfahrer

I'm getting different readings from my autometer mechanical gauge and the Zeitronix electrical gauge. Which one should I trust?
Max boost is AM=18+ ZT=17. Vacuum readings also differs between the two.
AM=19.5 ZT=18+.

daniel951

from i learned zeitronix is probably more accurate then autometer. I heard this from some of the ricers. LOL

mroberts

Does the autometer gauge read zero with the car off ? I have one that is off-zero.

schnellfahrer

Good question. I'll go outside and check.

schnellfahrer

Hmf. -0.4 with the engine off. The autometer gauge was $35 and reads correct while the ZT was $160 and it's off. Is there anyway to calibrate the darn thing?
Still, the difference between the gauges are ~.5 psi.

schnellfahrer

And yes, I'm at sea level (60ft above).

OriginalSterm

depends on where the gauges are getting their signals too. a kink or two in the line could cause a pressure drop that the other gauge doesn't read. if they are plumbed next to each other, i guess i don't know which one to trust then.

schnellfahrer

I've T'ed into the line to the KLR. Then another T to the AM and the ZT-2.

Sam Lin

The Autometer, being a mechanical, won't be accurate unless you're at sea level. Trust the Zeitronix.

Sam

UK952

Does it matter if its repeatable and your air fuel ratio is correct?
If I was the manufacturer of relatively cheap boost guages I think I would ensure they read slightly high rather than low, then you shouldn't get customers banging on the door saying your guage blew my engine.

Tony

schnellfahrer

Hmm.. Today the gauge reads 0 with the engine off. I installed it yesterday. Maybe it's self-calibrating? I'll trust the reading of the ZT-2. I'll give the AccuBoost another half turn.