Boost Controller

hey what's happening guys hope you guys have a great day today I just want to talk to you a little bit about co2 pressure co2 bottles and how I have the wastegate how I have boost control on my vehicle and there's a lot of race cars there do it like this a lot of street cars do it a little bit differently there's a whole bunch of different ways you can control boost but ideally for me the best thing is with a co2 bottle so check this out here's my co2 setup it's a five pound co2 bottle got a regulator on it the first gauge over there the tantos your bottle pressure the second gauge over here closest to the left that's going to tell you actually the pressure going and so I just went ahead and run five pound bottle typically the 5 pound bottle will last about a half a season or it depends on completely how you have your boost setup in the Holly mine comes on and pretty much stays on all the time and then when I hate the trains breaking cycles back down but you can do it differently so in the Holly this is kind of how you can control how much co2 you're using this TPS boost modulation if you have this little valve right here this little box right here check what's gonna happen is until you reach 50% throttle you're gonna have no co2 pressure on top of the the gate and so and that's adjustable it can go 80% or 90% and will go 200 percent so here but here's the here's the problem that I found with the TPS boost modulation is when this thing is selected it is not 100% all-or-nothing so at 50% throttle it doesn't give you all of the co2 pressure that you're asking it to give it's a ramp so if you're going down tracking you're at a hundred percent throttle and then for some reason your foot start it starts easing off the gas it will start losing dome pressure and so you know that's pretty problematic it's gonna drop the good thing about this scenario is this this would be good for the street this would be really good to conserve co2 but for my car what I do is I just do not have this selected and so with that not selected basically any time I turn on the ignition the solenoid cycle and it puts whatever the dome pressure is it goes through the cycle and it puts the dome pressure and so it follows the ramp out and then you know it is there and so like this one it starts off at 10 psi and then at 25 psi at 2 seconds so basically it'll just have 25 pounds of dome pressure at all times as long as my quarter turn valve is turned on at the bottle so that's the way I do mine you know you it does at the end of the path I've turned a quarter turn valve off and you know that's the way I can serve but you know it does potentially use a little bit more co2 anytime you hit the trans brake it will go to my launch enabled so it leaves with 10 psi and then I've got you know 5 psi on the old crap button so that's my scramble button but it's gonna you know that's that's the way I set mine up and use mine that's why I had this quarter turn valve here so I leave the the bottle turned on all the time and then before I make a pass you know I'll turn that valve and there's been a couple times what I've recently started doing I used to just turn it on when I got into staging lanes but what I found is doing burnouts it was hard to control the boost the boost would you know run away and it would make 10 pounds of boost in the burnout box so I started turning that valve off and it's beeped me a couple times to where I forgot to turn it back on and didn't have any co2 going down track so that's the problem with doing it that way but that's what the quarter turn valve is for so then it comes down it follows down here am I still annoyed essentially what happens you see the tea the tea there that line the black line it goes back to the parachutes I have a air controlled parachute still pull the lever like normal but the air solenoid pushes it out a lot faster a little easier to pack but it comes down it goes into the cylinder regular 6jj 5 2 valves but the one on the right is the feel solenoid you got the tee coming through in the middle the one on the left is the vent so those work in conjunction together and then the black line going out that's the one that goes up to the to the front of the car and goes to the waste gates so when you have a preset pressure the valve on the right the fuel solenoid opens and then it should open slowly and it progresses it and then it gets to the the pressure that you want it to be and then if it over pressure rises then the feel the the dumps on wood dumps a little bit of pressure and so you'll hear it clicking back and forth and so that's how these work so what will happen I got the pressure gauges turn on it's got about 85 pounds of pressure on the valve going on there this is turn on and then it goes down to the solenoids comes on it will pull from the feel side to the to the dump side and that's how it maintains the co2 pressure co2 pressure goes down that line then it goes up to the top of the wastegate essentially what happens is you're making it appear that you have a varying rate spring in the wastegate so when you put say 40 pounds of dome pressure on it you've got a real light spring in the wastegate I run starter solenoid Springs off of a small-block Chevrolet starter so I mean you know it's one of those things that you want as light as a spring as possible some people don't even run Springs in them they just let the co2 do all the work another thing to think about co2 pressure does not always 100% follow boost 1 to 1 so you may have to put 50 pounds of dome pressure on the waste gates in order to get it to make 20 pounds of boost or 25 pounds of boost sometimes it does follow one-to-one if you've got 40 pounds of dome pressure you will have about 40 pounds of boost what seems to be happening is that's another indication of how your turbo is doing once you get to a point where it's close to 1 to 1 and then suddenly you have to start adding 5 or 10 pounds of dome pressure to pick up one pound of boost if you'll go back and look at your back pressure most likely your back pressure is starting to increase as well and so that's the indication you've almost run out of turbo so it doesn't always follow it it would be nice if it did follow it one to one all the time but it doesn't it completely depends on your setup it depends on how everything is matched together so the co2 pressure comes down I've got to weigh skates so on mine it goes to the top of this lace cake and then to the top of this wastegate and then this is the pressure sensor so this is the transducer that tells the Holly how much pressure is actually on the top of the wastegate the bottom port on the wastegate this just goes to the compressor housing like normal so it's able to read the boost get boost acting on on the lower side and then you get co2 pressure acting on this side the basics of how the the co2 works you know you build a ramp so you tell you want to start off with 10 or 14 pounds of dome pressure and then when you let go to transbrake get a ramp up to 40 or 50 or 30 whatever whatever you choose how much every boost you're trying to make and so it'll follow that ramp and start applying co2 pressure to the top of the wastegate and that's how you increase boost alright y'all have any questions drop them in the comments don't forget to Like share and subscribe go fast and get some win likes thanks

Channel: Turbo John

Views: 9,907

Rating: 4.9515152 out of 5

Keywords: Nhra, Drag racing, Street outlaws, Big chief, Drag Radial, No mercy, Lights out, N/T racing, Lots of boost, High rpm, BOOST, Boosted, Boosted GT, Cleetus, Corvette, Mustang, Blower, Street Racing, Daddy Dave, Donald Long, turbocharged, Kye Kelley, Lizzy Musi, SUPRA, Win Lights, 2000 hp, Mustang Week, Procharger, Vortech, Enderle, VP Fuels, Methanol, M1, Nitro, Nitromethane, 1320, 1320 Video, JMalcom2004, Procharged, Powerglide, Torque Converter, Belt drive fuel pump, Fuel system, Alcohol

Id: KtlfmuDyE8o

Length: 7min 44sec (464 seconds)

Published: Sun Jun 23 2019