Blow off valve Actuator and Boost Gauge

[0range_Kouki24O]

should i connect the T connector between the fuel pressure regulator and top left port of throttle body??. also where do i connec the wastegate actuator vacuum line ?? would it work out if i have the blow off valve and wastegate on the same T connector ???

suggestions so i can do this right the first time

[aznrib]

for the boost gauge you can T off the FPR line. The wastegate has to see boost and the bov has to see vacuum.

http://www.sillbeer.com/vaccum.php

[johnnyballs180]

i have a greddy fmic, and like that link aznrib left you says, greddy ones need a nipple welded to it i sad eff that, and ran my wastegate from the same source as my bov, the top right nipple thing on the throttle body. not the best way, but works just as well.also, i was re-using a lot of original clips and clamps, but it really does pay off to get some better ones for all of your hoses. if anything goes down in the future, at least you'll know it's probably not an air leak.

[0range_Kouki24O]

the link you gave me is good but i still dont understand where i would connect my wastegate. i have a nipple welded on my old hotpipe and i have a silicon hose connecting from there to the wastegate should i do the same for my new pipe. i just wanna do this right

[nzmoman]

connect it on your Inter cooler piping as close to the turbo as you can get it. That should provide a little better wastegate response. If you have to do it after the IC keep in mind that your wastegate will be opening a little late because there typically is a slight pressure drop at the intercooler going from the hot side to the cold side. So anywhere between your Throttle body and turbo works, but between the turbo and intercooler typically is ideal.

[Seishuku]

Use the one unused vacuum source under the throttle body.

Having it there will provide the most accurate boost signal, as that's the pressure that the engine will be seeing. Also compensates for pressure drop from charge piping and the intercooler.Side affect is the wastegate will snap shut on vacuum (off throttle) and will keep exhaust gases spinning the turbine, so it should take less work to get back up to boost when you get back on the gas.

Down side is that I've heard that you can damage the diaphragm in the wastegate actuator, though I haven't see any examples and I've been running mine like that for a long long time and never a problem.

[0range_Kouki24O]

i have one vacuum port left on my throttle body which is plugged off can i use that or would it work better if i T off with my blow off valve

[Seishuku]

As long as it isn't the one for the charcoal canister (small vacuum port that's actually ON the throttle body), it doesn't matter. As long as it's a source from the intake plenum.

[0range_Kouki24O]

thanks everyone for the replies my blow off valve is working good

[nzmoman]

Use the one unused vacuum source under the throttle body.

Having it there will provide the most accurate boost signal, as that's the pressure that the engine will be seeing. Also compensates for pressure drop from charge piping and the intercooler.Side affect is the wastegate will snap shut on vacuum (off throttle) and will keep exhaust gases spinning the turbine, so it should take less work to get back up to boost when you get back on the gas.

Down side is that I've heard that you can damage the diaphragm in the wastegate actuator, though I haven't see any examples and I've been running mine like that for a long long time and never a problem.

just remember that the job of the wastegate is to protect your turbo and engine from over boosting. If you run your turbo up towards its highest safe boost setting this can vary p to one or two PSI if you are running a large fmic and larger turbo and that will matter if you are going for high boost, ~18-20+ as your reading and the actual boost being generated will be different. But seishuku is right, you can definitely run it like that and it will last.

[Seishuku]

That's true, it is possible to overrun the turbo, but I feel that the pros outweigh the cons.