Boost guage T spots

[replica667]

I'm having some problems with the install of a mechanical autometer boost guage. I originally T'ed off of the vaccum line coming off the FMU. The guage reads vaccum and then stops at zero. The car is definatly making boost, so I don't think that is the issue. My next attempt will be off of the vaccum line on my fuel pressure reg. Do you guys have a suggestion or perhaps a pic of where you T'ed? Keep in mind I have a DX, so I can't tap a cruise control hose or some fancy car crap.

[Max Psi GSR]

Between the OE fuel psi regulator and the JRSC manifold works/worked for me.

[BoostedEX]

Uh......maybe I'm completely lost or something, but there is a fitting on the back of the JR manifold made for a boost gauge!

[replica667]

I get changes in fuel pressure. It was originally at 31 to 49 At almost WOT (I'm a wuss). I installed a B&M fpr and bumped it to 35 just because. Although that changes nothing under boost. The 5 to 1 ratio is a little confusing, I wonder if I'm really running a 6 psi pully. I might have a 4 psi pulley, as the supercharger was originally for a 6th gen D series, the pulley sizes create different boost. So assuming I'm running a 4 psi pully, with a 75-78% efficency I should be making 3.5 or so. Oh well, tommorow I'll mess with it.

Edit: I tapped the FPR vacuum and I am now reading boost. Sweet, I'm making just under 4.

<font color="#a62a2a" size="1">[ August 26, 2002 05:38 PM: Message edited by: replica667 ]</font>

[JRCivic]

Connect your boost line using a "T" somewhere on the vaccuum line running between the OE fuel pressure regulator (mounted to your fuel rail) and the back of the JR Manifold. If you still are only reading to ZERO boost, I suggest you check the vaccuum barbs on the JR manifold and make sure that they are not blocked. If they are, you will NOT be getting any increase in fuel pressure while under boost... and this is a bad thing for your engine.