When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I have a general idea of how I am supposed to run the lines but some things are still unclear like pre TB or post TB connection points. This is a LT1 btw.
I have dual 44mm gates, BOV, AMS 500 V2 boost controller and boost gauge. Anyone wanna draw me up a diagram to show how things should be "properly routed"?
Couldnt tell you. One port on my intake goes to wastegate. Other goes to vacuum block. In the vac block is my BOV, Hobbs switch for methanol pump, boost gauge, map sensor, and whatever else. I would personally not bother running anything pre-TB.
Couldnt tell you. One port on my intake goes to wastegate. Other goes to vacuum block. In the vac block is my BOV, Hobbs switch for methanol pump, boost gauge, map sensor, and whatever else. I would personally not bother running anything pre-TB.
I run my WG off the comp housing, which is "pre throttle body" but if you want to compensate for what restrictions you have inlet tract wise, toss the signal on intake. Being as you are gonna go C02 at some point, I would keep it simple and run WG to comp housing for now till you get the C02 lines made up. Less intake clutter.
I run my WG off the comp housing, which is "pre throttle body" but if you want to compensate for what restrictions you have inlet tract wise, toss the signal on intake. Being as you are gonna go C02 at some point, I would keep it simple and run WG to comp housing for now till you get the C02 lines made up. Less intake clutter.
Good point. I think I'll have my compressor drilled then. I'll get some pics together to make sure Im going down the right path....
The problem with running compressor pressure is that your wastegate or even electronic boost controller that's referenced from it don't open at the boost you're wanting.
With a restrictive coldside, your pre-intercooler pressure might be higher than after. So you put a 12 lb spring in to run 12 lbs. Your compressor is running 12 PSI but your gauge is only reading 8 PSI when the gate opens.
I run reference everything from the exact same boost source for a reason. Sometimes it's just easier to reference the wastegate from the compressor.
The problem with running compressor pressure is that your wastegate or even electronic boost controller that's referenced from it don't open at the boost you're wanting.
With a restrictive coldside, your pre-intercooler pressure might be higher than after. So you put a 12 lb spring in to run 12 lbs. Your compressor is running 12 PSI but your gauge is only reading 8 PSI when the gate opens.
I run reference everything from the exact same boost source for a reason. Sometimes it's just easier to reference the wastegate from the compressor.
So that is why it makes more sense to run the boost sources from one similar area instead of having boost referenced items read from multiple locations, giving inaccurate readings?
Not sure if you're using a stock throttle body or not, but there's a port on the upper right side (passengers side) of the throttle body that would only see boost, no vacuum and be after any intercooler. I know there's some debate whether or not a WG should see vacuum, so that's up to you. Just throwing out another option.
You can kin of see it on the side of the throttle body. It's plugged, but this is where I run my boost controller from.
Not sure if you're using a stock throttle body or not, but there's a port on the upper right side (passengers side) of the throttle body that would only see boost, no vacuum and be after any intercooler. I know there's some debate whether or not a WG should see vacuum, so that's up to you. Just throwing out another option.
You can kin of see it on the side of the throttle body. It's plugged, but this is where I run my boost controller from.
Remember Im LT1.
This is getting confusing. Im glad I asked. Crazy how so many people have different theories....
Not to hijack but the OP and I are in the same exact boat. vacuum routing! If its fine to run everything from the intake, Im using an LS3 intake so my question is could I just come off the nipple at the rear of the intake to feed into my vacuum block??
As in T it from there with my brake booster?
2 Tial 44 Wastegates
Tail Q BOV
Aeromotive FPR
brake booster
EDIT: forgot to mention I have a AEM TruBoost controller also
I have a 8 port vacuum block btw
Last edited by 87caprice318; Mar 2, 2016 at 10:35 AM.
The vacuum block I have had fittings on both ends so you can place it right in the middle of the booster hose.
This...
I would run all vacuum/boost lines to the vacuum block.
If you run your Boost controller to the compressor housing, just know that what the motor is actually seeing will be a little less due to inefficiency thru the piping/intercooler. Not a big deal. I would run everything to the vacuum block though.
I would run all vacuum/boost lines to the vacuum block.
If you run your Boost controller to the compressor housing, just know that what the motor is actually seeing will be a little less due to inefficiency thru the piping/intercooler. Not a big deal. I would run everything to the vacuum block though.
Boost controller sees manifold pressure, but the solenoid will be pressurized off the comp housing. Again, AMS500 asks for that setup, so you will see whatever boost you want from it..
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.
Vacuum Block Routing Help 
