Originally Posted by Zim
I disagree... mechanical guages are usually more stable than electronic just because theres no sending units. I had an autometer fuel pressure guage go bad on me, but it might have had something to do with sitting right on my fuel rail and constantly be vibrating,
Id just check to make sure theres not even the slightest crack or something in your vacuum lines... that would mess it all up.
Yeah, I was going to say that I think for things like boost, a mechanical gauge is better because I would prefer it actually use the pressure rather than a sender, but I didn't feel like explaining myself to the "electronic is better" group.
However, I know of a bunch of people running both and it seems like the ones with mechanicals need to be replaced more often than the electronics. I do feel that their accuracy is better though referring to boost.