Where does everyone have their line tapped for the boost gauge? I followed the only writeup I could find online and ran a line to the nipple on the front of the plenum but the boost readings arent consistent. Im assuming its the wrong location.

Ive read of a few spots to T into but cant see any clarification on it. Pictures would also help! Thanks!

 

There's a line off the rear of the plenum that I put a T-fitting on and I get mine from there.(pretty sure I had to reduce the size)

 

for a boost gauge off the plenum. I'd look into a vac block.

@ii, are you plumbing your side-port waste gate from the plenum? (hard to tell from the picture)

 

Thanks for the replies guys, currently I have my a/f ratio gauge from the hose you are specifying dead eye, so I can tap into it again for the boost gauge?

Like I said, I currently have it from the nipple on the front passenger side of the plenum, but every time I start the car the boost gauge needle is at a different number, its not consistent. Its not reading negative pressure so this nipple area must be no good Im assuming.

If it helps, I'm running a voretch v3 supercharger

 

That's not my picture. I just grabbed it off google to show which place i was talking about that I tapped into.

 

a/f comes from exhaust

 

Sorry, didnt mean a/f ratio, i meant my bypass valve

 

I have my blow off and boost gauge from that line deadeye mentioned, with consistent readings.

 

Thank god!!

 

Anyone else have a boost gauge installed in their 350?

 

Everyone has a boost gauge installed on their 350z...

what's your concern? why are you worried? what are the inconsistencies? it's a stupid gauge doesnt mean much...just tap it off the plenum and be done...

 

^^

 

LOL relax there bud, no worries on this end. I paid x amount for this gauge and its not working correctly where I have it "tapped off the plenum" where you suggest.

Ill throw in a nipple where my blow off valve is and see what happens. Thanks for the replies deadeye and nic