Turbo Guys...Boost Controller help
Heath........... when we start making 600+rwhp most gas milage goes out the window..... i stopped worring about MPG along time ago........... more like gallons to the mile now... 
Bad *** Jer...... glad ya got it working...... were going with the 3 bar MAP.... ill let ya know how that does....
Kyle
Bad *** Jer...... glad ya got it working...... were going with the 3 bar MAP.... ill let ya know how that does....
Kyle
Thread Starter
TECH Senior Member
iTrader: (16)
Joined: Oct 2002
Posts: 6,907
Likes: 6
From: Albuquerque, NM
Heath,
MPG? Whats that
My car has always been crappy for getting good mileage per tanks of gas. High stall, boost and gears are all detrimental to knocking down great gas mileage.
Its been getting about 170mi per tank tho It was the same with the supercharger too
With the SD tune my car is staying in the 14's(AFR) pretty well under cruise conditions, but when I let off the gas it goes real rich into the 12's until I put my foot back on the pedal.
Kyle 3 bar yeah yeah sure You'll get to 14.7psi and crap your pants and call good right there...your car is going to be a beast
LTLHomer, Yep worked like a charm. I was concerned about leaving the top port open. I was running the WG that way when just running the spring and no boost controller as well. I cut a long length of vac line and attached it to the top port and routed it where water or crud couldn't jack it up. Do you think I could put a check valve on that piece of vacuum line so it'll be "sealed" until it was venting?
SuperZ were working on it. I'm definately thinking its getting dyno'ed on 10psi and pump gas to see whats up. Should be pretty safe. I can always hit the meth as well.
I'll be logging tomorrow on the way to work and on the way home to verify that my tune is good.
J
MPG? Whats that
My car has always been crappy for getting good mileage per tanks of gas. High stall, boost and gears are all detrimental to knocking down great gas mileage.Its been getting about 170mi per tank tho
It was the same with the supercharger tooWith the SD tune my car is staying in the 14's(AFR) pretty well under cruise conditions, but when I let off the gas it goes real rich into the 12's until I put my foot back on the pedal.
Kyle 3 bar yeah yeah sure
You'll get to 14.7psi and crap your pants and call good right there...your car is going to be a beastLTLHomer, Yep worked like a charm. I was concerned about leaving the top port open. I was running the WG that way when just running the spring and no boost controller as well. I cut a long length of vac line and attached it to the top port and routed it where water or crud couldn't jack it up. Do you think I could put a check valve on that piece of vacuum line so it'll be "sealed" until it was venting?
SuperZ were working on it. I'm definately thinking its getting dyno'ed on 10psi and pump gas to see whats up. Should be pretty safe. I can always hit the meth as well.
I'll be logging tomorrow on the way to work and on the way home to verify that my tune is good.
J
Originally Posted by LTLHOMER
I think you're confused...the way you are suggesting with the turbosmart is more of a bleeder type setup (bleeding off some of the pressure and putting on the top of the wastegate). I had the same boost Tee that he is running and the way SR71 said to do it is right (and that's why it worked). The boost Tee is a ball and spring setup so that it won't let any pressure pass through until a certain pressure has been reached in which it lets the pressure pass and then that will open the wastegate.
I don't know what you mean by bottom or top, but the bottom is usually referred to as the side that is pushing against the spring. You can never make less boost than your wastegate spring...it's just not possible.
You can only add more pressure to the top of the gate and that means it would take more pressure to push against both the pressure from the spring and the extra air pressure on top of it (or more race type setups actually put c02 on top of the gates to add to the wastegate spring pressure).
boost control
Originally Posted by BoostMluse
This is incorrect. If you've ever dissected a wastegate you would understand what i'm talking about. There is a sealed diaphram inside the gate. When boost is added to the "bottom" of the wastegate, youre effectively changing the spring rate of the gate. It now has the pressure of exhaust gases as well as the boost pressure from the engine helping to open the gate.
You can't make less boost than your wastegate spring.
I'm also familiar how the ECU's can control the boost pressure (I'm going to be using bs3 with two valves to control it) but it doesn't change the fact that you can't make less boost than your wg spring.
Originally Posted by frcefed98
Kyle 3 bar yeah yeah sure
You'll get to 14.7psi and crap your pants and call good right there...your car is going to be a beastJ
Well have to see Jer... should be
Kyle
Originally Posted by BoostMluse
I was refering to a wastegate in general and boost controller in general. I'm not familiar with the turbosmart boost controller. After your explaination, i can see why it needs to be routed that way.
This is incorrect. If you've ever dissected a wastegate you would understand what i'm talking about. There is a sealed diaphram inside the gate. When boost is added to the "bottom" of the wastegate, youre effectively changing the spring rate of the gate. It now has the pressure of exhaust gases as well as the boost pressure from the engine helping to open the gate.
Adding more pressure to the "top" in conjuction with a reference line to the "bottom" will give you boost control. This is how typical boost controllers are set up. Refer to frcefed's link in a prior post. Here is another excellent link for boost controllers that can be controlled by standalone ECU's.
boost control
This is incorrect. If you've ever dissected a wastegate you would understand what i'm talking about. There is a sealed diaphram inside the gate. When boost is added to the "bottom" of the wastegate, youre effectively changing the spring rate of the gate. It now has the pressure of exhaust gases as well as the boost pressure from the engine helping to open the gate.
Adding more pressure to the "top" in conjuction with a reference line to the "bottom" will give you boost control. This is how typical boost controllers are set up. Refer to frcefed's link in a prior post. Here is another excellent link for boost controllers that can be controlled by standalone ECU's.
boost control
Thanks,
Eric
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Originally Posted by frcefed98
UPDATE!!! IT MAKES BOOST
sr71, you sir are a great help
Hooked it up like you rec'ed and BAM!!! Friggen works like a charm. Boosts damn fast too We have her set up for 10psi for the street right now. Thanks a TON!!!
sr71, you sir are a great help
Hooked it up like you rec'ed and BAM!!! Friggen works like a charm. Boosts damn fast too We have her set up for 10psi for the street right now. Thanks a TON!!! Thread Starter
TECH Senior Member
iTrader: (16)
Joined: Oct 2002
Posts: 6,907
Likes: 6
From: Albuquerque, NM
KP, Thanks, now hopefully it'll reward me with great times and numbers. Dyno'ing the car was not a big deal to me, but it doesn't look like the track will be opening anytime soon so it'll have to do for now. The car boosts hard and fast now, i'm not use to that at all.
sr71, kp is an awesome guy to have around, you are lucky. I bug the hell out of him with PM's though
You're advice was dead on. Spools real fast now and holds 10psi solidly. Thanks again for the help
I better start saving for a tranny, something tells me its not going to like the turbo at the 14-15 psi I want to run
sr71, kp is an awesome guy to have around, you are lucky. I bug the hell out of him with PM's though
You're advice was dead on. Spools real fast now and holds 10psi solidly. Thanks again for the help
I better start saving for a tranny, something tells me its not going to like the turbo at the 14-15 psi I want to run
Originally Posted by frcefed98
KP, Thanks, now hopefully it'll reward me with great times and numbers. Dyno'ing the car was not a big deal to me, but it doesn't look like the track will be opening anytime soon so it'll have to do for now. The car boosts hard and fast now, i'm not use to that at all.
sr71, kp is an awesome guy to have around, you are lucky. I bug the hell out of him with PM's though
You're advice was dead on. Spools real fast now and holds 10psi solidly. Thanks again for the help
I better start saving for a tranny, something tells me its not going to like the turbo at the 14-15 psi I want to run
sr71, kp is an awesome guy to have around, you are lucky. I bug the hell out of him with PM's though
You're advice was dead on. Spools real fast now and holds 10psi solidly. Thanks again for the help
I better start saving for a tranny, something tells me its not going to like the turbo at the 14-15 psi I want to run
Th400 Jer..........
or just have the 4l60e gone thru......?? 
Is the above mentioned way the correct way to route lines to all Boost Controllers? I have a Greddy Profec B Spec 2 on the way and with an external wastegate it says to put the valve inlet source from manifold pressure and the outlet of the valve to the top of the wastegate. Is this not correct??
Originally Posted by greentahoe
Is the above mentioned way the correct way to route lines to all Boost Controllers? I have a Greddy Profec B Spec 2 on the way and with an external wastegate it says to put the valve inlet source from manifold pressure and the outlet of the valve to the top of the wastegate. Is this not correct??
What is a greddy profec B? Is that an electronic boost controller? If so, it should have things going both to the top and bottom side of the wastegate.
Originally Posted by LTLHOMER
Depends on the boost controller and depends on the wastegate...
What is a greddy profec B? Is that an electronic boost controller? If so, it should have things going both to the top and bottom side of the wastegate.
What is a greddy profec B? Is that an electronic boost controller? If so, it should have things going both to the top and bottom side of the wastegate.
Why is the installation for the above mentioned unit different? It is electronic as well.
Originally Posted by greentahoe
Is the above mentioned way the correct way to route lines to all Boost Controllers? I have a Greddy Profec B Spec 2 on the way and with an external wastegate it says to put the valve inlet source from manifold pressure and the outlet of the valve to the top of the wastegate. Is this not correct??
Originally Posted by greentahoe
Its under electronic here http://greddy.com/. It is an electronic boost controller with high and low boost setting and adjustable gain, start boost, and limiter settings.
Why is the installation for the above mentioned unit different? It is electronic as well.
Why is the installation for the above mentioned unit different? It is electronic as well.
Those instructions should be fine (external wastegate instructions)...the way I'm reading it is you should run a hose from your compressor housing and then 'tee' it off...one line should go directly to the bottom of the wastegate and the other to the 'NC' port...then you run the 'com' port to the top of the wastegate...and you also run a reference line (pressure souce) directly to the main box...basically it looks like that boost controller will just control the amount of pressure going to the top of the gate, and in doing so, can control your boost pressure from your wastesgate spring pressure all the way up to not allowing the wastegate to open at all which is want to do until you reach your desired boost. I think that's how most electronic boost setups work so just follow the insturctions, and if you have any questions, call greddy and I'm sure they can tell you what needs to be done.
Originally Posted by greentahoe
In addition to this, the inlet on the side of the wastegate gets manifold pressure as well. So manifold pressure goes to the side inlet on the wastegate and also the inlet on the valve unit and then to the top of the wastegate. Is this correct for an electronic boost controller or is there just supposed to be a valve inline with the manifold pressure source and then continue on the side inlet of the wastegate and leave the top of the wastegate alone and open to the atmosphere???
Originally Posted by LTLHOMER
The first thing you said is right...jsut remember you have to run a reference to the main box as well so it knows what your actual boost is and then it controls that solenoid accordingly.
