nerd1717

I'm trying to turbo my 1999 civic si, and I'm having problems, the boost gauge doesn't register anything and the bov does bo, and the wastegate will constantly dump everything out from the manifold. Everything is brand new (t3/t4 turbo, boost controller, fmu, bov, wastegate etc) but i cant get it to work, and I know it has something to do with the vaccum lines, can anyone help?

tallyturbo

where are you running your vac lines to? that might help us out a little

nerd1717

from between the fuel pressure regulator and the intake manifold

nerd1717

and they are in one loop from there to the fmu to the bov to the bottom port on the wastgate which is tied into the boost controller which goes to the top port of the wastegate

donkiman

bummer to see an fmu used on that 99si, (nice car with a shitty part). But take some pics of all the lines and post them. It's gotta be somthin simple.

bubs

I'm guessing:
1.) No spring in the wastegate
or
2.) The firing ring is missing between the wastegate and wastegate flange

PhantomX

make sure no vac lines are not bent in any way.... and check your wastegate...

nerd1717

im 99% sure its not the firing ring or the spring, its prolly just a leak I have yet to find . . . . . . . i guess . . . . . . .maybe . . .

bubs

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nerd1717 &raquo;</TD></TR><TR><TD CLASS="quote">im 99% sure its not the firing ring or the spring, its prolly just a leak I have yet to find . . . . . . . i guess . . . . . . .maybe . . . </TD></TR></TABLE>

If exhaust gas is coming straight out of your wastegate dump tube all the time, there is something wrong with your wastegate or one of the things I mentioned above. The wastegate should stay shut until you reach the psi mark of whatever spring you have installed.

nerd1717

good call i replaced the firing ring and the wastegate stays shut,(the one percent was key and im a huge idiot) but now doesnt open, and the bov doesnt work still, but im not getting a vaccum reading, so theres a leak still . . . . . .right?

rhettster

What kind of boost controller are you using?

nerd1717

manual . . . i know it sucks . . .but i didnt feel like spending another $400 on a digital one, for now

bubs

There's probably a leak somewhere in one of your charge pipes if it's not creating boost after fixing your wastegate.

You also mentioned something about not getting a vac. reading. Is your boost gauge reading 0 with the motor running - care to explain?

nerd1717

it stays on zero, when i test drove it, if i hold it at an rpm, always

bubs

If it stays at 0 all the time, even at idle, then your boost gauge isn't hooked up properly or there is something wrong with the gauge itself. At idle, it should read ~18-20 hg of vac.

What are you using for a vac. source for the gauge? It should be somewhere on the intake manifold AFTER the throttlebody if it's not already.

nerd1717

between the fpr and the manifold, everything is tapped out of there

RogueWorks

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nerd1717 &raquo;</TD></TR><TR><TD CLASS="quote">between the fpr and the manifold, everything is tapped out of there</TD></TR></TABLE>

What does that mean? We aren't following you. Between the FPR and Manifold? Can you be more specific? Something about that does not sound right.

nerd1717

everything is tapped on the vaccum line that runs from the fuel pressure regulator and the intake manifold

nerd1717

apparently my vac lines were collapsing, so i bought some beefier ones, and that did the job job, thanks for everyones help