oh no no, I didn't mean idle numbers, just boost psi in general, but 1 psi for each .1 in. drop answers it.. would 3.4 be too drastic of a drop for my setup, should I go to 3.6?

I'm thinking a 3.4 is too small for your mods. Still running stock unported exh manifolds, stock PCM, and 195 t-stat? That front manifold really sucks. Not only is it a very small diameter, but the openings are partly blocked by casting flash. 3.6 or 3.5 would be the safe way to go.

i've got mine tapped into the fitting under the nose cone of the supercharger, is that not right? i'm showing appx 15psi @ WOT with a 3.6. but also my diognostic scanner show some code on my boost solonoid. could that effect anything? the car runs great.

15 psi? really? with only a 3.6 pulley and your intake? damn

after reading that write up i'm gonna go with a 3.5" modular system, and a 180 t-stat

I tapped mine to the first hose here, but ours doesn't have the 3 hoses like this, just two, so I tapped into the top line on this part, is that fine?

15 PSI isn't possible with a 3.6" unless you've got something clogging your exhaust pipe. I max at 14 PSI with a 3.2", and that's when it's really cool outside.

Have you verified this with a MAP reading from a scanner?

Ryan, where'd that fuel rail come from? Is that a Gen V blower... is that your engine?

no no, that's a 3800 in a bonneville SSE I believe, from a boost gauge write up..

I gotta buy batteries for my camera, but i'll take pictures of where I tapped it, and my A-pod gauge when I do

this is where mine is installed, it goes to the MAP sensor. will that not work?

the 96 series II rivs have the vac lines routed like the bonnevilles. i dont have a boost gauge but with my scanner i see a max psi of about 11 with my 3.4" on a cold day.
your gauge isnt reading right if it shows 15psi on a M90 with 3.6".
our efficiency max is like 17psi with IC, P&P and 2.8" :lol:

most people tap into the vac line under the snout/alt b/c there is a T there and it is hidden behind everything.

THAT SHOULD WORK, just make sure its not going to be damaged by any heat sources!!!! very important. other wise, you'll be wondering why you s/c is whining but ur only seeing 0 lbs of boost, and then its walking time.

haha.. yeah, i'm going to buy some plastic or rubber conduit for the line, but it should be fine

where do i hook up a boost gauge to ?

u need to get a vacuum hose tee and run the white platic line into the cabin, youll need to drill a hole in the firewall. Then u need splicce some wires from a fused source. and i just took out a vent and put it in there and ran the wires inside the vent and drilled a whole to wire it to something. the gauge will fit and if its too small then just wrap it with tape till it does.

hope this helps. my boost gauge line is the white one that runs to the black T fitting