Hey Guys,

Well been doing some reasearch about TN and measuring boost on my kit. I noticed that (on my gauge) my VAC is 10 when most other TN owners have a VAC of 15-20 at idle.

So I looked over my lines and havent found anything that would lead me to believe there is a pinch in the line or there is a hole.

The location of the sensor is coming off the unused port on the plenum which is as to Ts on it to the BOV and Boost controller.

I looked at the lines and suff for a hour or so and I cant figure out why my gauge isnt reading correctly.

anybody have any opinions. Bad sensor ? the line is to long ? . . . ?

any ideas would be great

Thanks

T

 

I had a butt load of problems the 1st couple days after installation with all the V clamps TIGHTEN those Beechas till they scream.

 

It depends on what your gauge reads in, if it is in inches then 20 will be normal if in psi then 10 is normal, my Greddy Profec e01 reads around 10 at idle.

 

+1. What is the reading unit? You should see 20 in/hg at idle or its equivalent value in kPa, Bar, etc...

 

When I put my return fuel system on my car, I had the same problem. The gasket that was supplied was fiber or something and it had blew out a section and my vacuum dropped to 11 or so. I replaced it with a new gasket from nissan and no problems since.

http://i39.photobucket.com/albums/e1...z/a374440e.jpg
http://i39.photobucket.com/albums/e1...z/3d95a3be.jpg
http://i39.photobucket.com/albums/e1...z/024be322.jpg

Sorry but these were the only pics I could find.

Craig

 

My defi gauge has always show between 21 and 24 mmHg on my vortech kit.

 

I believe its psi, have to look when I get home. Again this is my first boosted car so everything is a learning experience.

So if its reading wrong, what other things should I be looking at ?

T