6-7 pounds of boost

[turbosvo]

so my car is only building 6-7 psi on and off the premium switch! I set the timing on my car to 10 deg! Does the switch have to be on reg or premium when setting the timing or does it even matter? Or any other advice would help alot

[BrianO]

when you set the timing with the SPOUT removed it takes the computer out of the loop period so it does not matter what mode it's in. 10 degrees is base timing, then adding the SPOUT adds computer timing back in.

sounds like it's the switch and only running in regular mode, are you sure it works? you might check the fuse for the switch and also try one of the other switches in it's place, they are the same.

[turbosvo]

I don't have a spout (didnt have one on when I got the car) but I installed a connector so I disconnected it when setting the timing, that should work the same right?

[BrianO]

yes I have the same thing.. it's just a wire connection either way.

the fuse for the premium switch is just inside the glove box to the left in a wire loom, that could be blown. or just try another switch on that connector to see. The light may be on and working, but the switch may not work. the reason I'm guessing it's switch related is because if that system wasn't working at all you'd get the default mechanical 10psi. Since it's 6-7 that is the regular switch setting.

[turbosvo]

Cool thanks ill give it a shot tomorrow

[boostedbruiser]

WHICH SVO IS THIS ?????

check vacuum/boost hoses also.

[turbosvo]

WHICH SVO IS THIS ?????

check vacuum/boost hoses also.

the 84! The red one had a messed up valve on the head so I'm having some installed and some chevy springs, and I still have to replace the rings

[Alex L]

WHICH SVO IS THIS ?????

check vacuum/boost hoses also.

yea, even if the switch was completely disconnected, or the fuse blown, you would get 10psi on an otherwise operational system. which wire did you put your connector in, and did you verify that reconnecting the connector kicked the advance back up above 20 deg? (IIRC, its around 25-30 deg advance at idle spout connected)

double check that the wastegate actuator is fully operational. the low max boost makes me think the WG is not seating properly. you can get a real good view of it from behind the passanger side of the k-member. apply shop air @ 10-12psi to the wastegate actuator and make sure it smoothly actuates through the whole 90-120 deg sweep.

[SVOeric]

yea, even if the switch was completely disconnected, or the fuse blown, you would get 10psi on an otherwise operational system.

that's making a big assumption -- that the boost gauge is accurate. I can tell you that on most of the SVO's I've seen, they aren't

My guess is he's getting the full 10 psi, and it's either the boost controller not actuating, or a hose mis-routed.

[turbosvo]

yea, even if the switch was completely disconnected, or the fuse blown, you would get 10psi on an otherwise operational system. which wire did you put your connector in, and did you verify that reconnecting the connector kicked the advance back up above 20 deg? (IIRC, its around 25-30 deg advance at idle spout connected)

double check that the wastegate actuator is fully operational. the low max boost makes me think the WG is not seating properly. you can get a real good view of it from behind the passanger side of the k-member. apply shop air @ 10-12psi to the wastegate actuator and make sure it smoothly actuates through the whole 90-120 deg sweep.

I added the connector to the yellow wire off the tfi!

[turbosvo]

ok so i installed a manuel boost controller, and still the same thing ! so does this mean that its something with the timing?

[BrianO]

did this work before and just stop or had you done something to it? I think someone mentioned this, but have you verified that timing is increasing with rpm's? it's possible the spout/wire connector is wrong and your driving at 10 degrees the whole time. Put a light on the balancer and rev it and make sure timing goes up with it and doesn't stay at 10 degrees.

[NavySVO]

Put a light on the balancer and rev it and make sure timing goes up with it and doesn't stay at 10 degrees.

If the SPOUT is connected and getting a signal, timing will be at 30-32 degrees already, so then you will already know it's advanced and working. But, you can get happy with the TB if need be for reassurance.

Borrow the gage off of the red car and verify boost pressure to rule out the stock gage possibly being bad.

Does the car have power? Does it stumble at a certain RPM? Did you verify cam timing?

[SVOeric]

2 things you can do here..
#1 check the timing, with a timing light.
disconnect your yellow wire, set the timing to 10*
plug your yellow wire back in, check the timing -- it should be between 20*-30*

#2
unplug the hose that goes to the waste gate actuator. YOU NOW HAVE UNLIMITED BOOST!
this

[SVOeric]

3 things you can do here..
#1 check the timing, with a timing light.
disconnect your yellow wire, set the timing to 10*
plug your yellow wire back in, check the timing -- it should be between 20*-30* advance

#3 check the cam timing... Remember, cam timing and ignition timing are different. cam timing should be at 0. pop that plug out of the cover, put the engine on TDC, and see where it is (hopefully with the pointer that might be there)

#3
unplug the hose that goes to the waste gate actuator. YOU NOW HAVE UNLIMITED BOOST!
this is not really a good thing... BE VERY CAREFUL HERE.
take it out, run it up, and you should see boost peg very quickly... do not hold the gas pedal down once the needle jumps above 10 psi, or you will be asking for tech help on a head gasket replacment.
it's best to ease into the gas pedal, don't jab it down, and hold it, the boost will build too quickly to release.

Edit Added note, You do know you can't build boost sitting still. you have to have load on the engine before it will build boost, this means driving the car.