boost gauge tube

i just bought a used HKS SSQV bov and it came with an autometer boost gauge. Where can i put the boost gauge tube from inside the car to the bov. thanks

are you wanting to know where to mount it or how to install it??

Most people slice an "x" in the boot between the firewall and cabin. Instructions are on www.vfaq.com. You can also drill a hole straight through the firewall. Or, if a suitable hole is already there, you can use a coat hanger to push the tube through.

I think I understand the question...

N/M, I did the work for you :)

"Locate the steering column boot. It is located just above the foot pedals. Using a knife, cut a slit in the boot. You will have to make two slits since the boot is two layers thick. Cut the slit on the lower left side of the boot.

Take a wire coat hanger or a grabber and fix the 7/64 hose to the end of it. You can simply wrap it around or tape it to it to the wire. Push the hanger into the new hole from inside to the engine. Try to angle it upward as much as possible. You will need to be able to reach it from the engine and unless you have small, long arms, this can be a chore."

from http://vfaq.com/mods/wayback/u_boostgage.htm

Now bookmark www.vfaq.com ;)

Now bookmark www.vfaq.com ;)

YES... Save that link to VFAQ.... it is your friend... it is everyones friend.

the boost gauge doesn't go to the BOV.

you T the hose into a vacume line and put the hose through your firewall

To be precise ... you "T" off of the fuel pressure regulator vac hose.... the one that goes from the intake manifold... www.vfaq.com has all the info...

Here is the exact page you need...
http://www.prostreetonline.com/pso/pages/howto/dsmboostgauge.asp

there ya go....

I always feel the need to post my usual warning about using the FPR vac line to tap in a boost guage, or anything else, so here it is. Be careful :)

If that connection fails, the boost guage fails, etc, you can lose your boost signal to the FPR. That will prevent the FPR from raising fuel pressure to match boost pressure. I never did the math, but my fancy fuel spreadsheet posted on my site has recently been modified, and I just realized it can be used to figure out this change. Assuming 20 psi of boost, with no boost reference to the FPR, a set of 450 injectors would effectively become 329s :D They only support 24 lbs/min assuming fuel specific gravity of .76 and a target AFR of 11:1. This is probably why people I know that have run without that line on T25s have survived unscathed, it can barely flow that much maxed out :) It can get ugly quick on larger setups though. 950s become 694s, etc.

On my last round of mods when I installed the BJs manifold, I had enough tapped ports on the mani to run a seperate line for the FPR and Boost guage. It instantly became MUCH easier to sleep at night. ;)

would you recomend that i add a boost guage port to my manifold then since its out?

If its a stock manifold, I would probably just tee into something less critical, like the BOV line. If that line being 1/4" instead of 3/16th poses a problem, the E port on the TB is a post throttle plate source also. If you still have all the emissions stuff hooked up, leaks are very common there, and I don't know what that would do for your guage readings ;) BOV line is probably the best place.