Question about mechanical boost gauge

[87-WE2]

Bought a mechanical boost gauge and one of these weekends will get it installed. I prepped the end of the tube to tee into the existing vac line for the factory boost gauge (analog dash). After installing the vacuum connector on the end of the supplied nylon tubing and heat-shrinking it, I sucked some air through the line to be sure I didn't melt the nylon tubing. It was clear, but I noticed that it was more difficult to move the air through a longer piece of the tubing than through a shorter piece (makes perfect sense).

I'll obviously keep the length as minimal as possible, but won't this have an effect on how the boost gauge reads? My physics background tells me that one of two things could happen.
1) The boost gauge will read a little less boost than is actually being generated, or
2) The boost gauge will be slower to REACT to the changes in boost level.

Is my thinking off on this, or is there not enough difference to concern myself with it?

 

[mikestertwo]

Your over thinking it a bit. As long as there are no leaks in the line the gauge will read correct. The amount of volume the gauge needs to read is mimimal so the delay in the reading is extremely small. Your ok.

 

[GullsGN]

Bought a mechanical boost gauge and one of these weekends will get it installed. I prepped the end of the tube to tee into the existing vac line for the factory boost gauge (analog dash). After installing the vacuum connector on the end of the supplied nylon tubing and heat-shrinking it, I sucked some air through the line to be sure I didn't melt the nylon tubing. It was clear, but I noticed that it was more difficult to move the air through a longer piece of the tubing than through a shorter piece (makes perfect sense).

I'll obviously keep the length as minimal as possible, but won't this have an effect on how the boost gauge reads? My physics background tells me that one of two things could happen.
1) The boost gauge will read a little less boost than is actually being generated, or
2) The boost gauge will be slower to REACT to the changes in boost level.

Is my thinking off on this, or is there not enough difference to concern myself with it?

It does not matter how long the hose is. No need to worry.

 

[aminga]

It does not matter how long the hose is. No need to worry.

That's not what my wife says

 

[87-WE2]

That's not what my wife says

HAAA!! It's just that this is the first time I've ever had to worry about my hose being TOO LONG!!!!

 

[davelostmissing]

Since the gauge is basically a dead end I don't think you have flow to get a pressure drop.
Slow ( but you probably can't see it ) gets my vote.

 

[mikestertwo]

That's not what my wife says

That's funny!

 

[highboostgn]

That's not what my wife says

LOL

 

[bison]

Bought a mechanical boost gauge and one of these weekends will get it installed. I prepped the end of the tube to tee into the existing vac line for the factory boost gauge (analog dash). After installing the vacuum connector on the end of the supplied nylon tubing and heat-shrinking it, I sucked some air through the line to be sure I didn't melt the nylon tubing. It was clear, but I noticed that it was more difficult to move the air through a longer piece of the tubing than through a shorter piece (makes perfect sense).

I'll obviously keep the length as minimal as possible, but won't this have an effect on how the boost gauge reads? My physics background tells me that one of two things could happen.
1) The boost gauge will read a little less boost than is actually being generated, or
2) The boost gauge will be slower to REACT to the changes in boost level.

Is my thinking off on this, or is there not enough difference to concern myself with it?

#2. i wouldnt worry about it. It will be within a couple tenths of a second

 

[87-WE2]

Thanks for the response, bison. I'll try to keep the hose as short as possible and still give myself a little slack.