Ok I notice the snow stopping for a couple hours and figure the road would be dry. Yes thats right nebraska really knows how to get the job done. This is way better than the spring mod. I use to have it so tight that it would surge real bad but just to hold 18 psi to readline. With PT's spring I notice it goind to 22 and slowing drop to 18 to redline I mean SLOW drop. But however when I just did third gear pulls it would it the psi I set it on my mbc but drop to about 17 maybe 16.5. Everytime I did 2nd to 3rd gear it would drop to 18 and 4th it hit 22 and sat at 20 but I was running out of road the condition are still bad out. I got the same results from trying to hold the wga arm shut with the turnbuckle spring mod and this has NO SURGing that is a big must to have. Surging can result in timing being pulled since the knock sensor is picking detonation up. So this is a MUST mod you cant beat this. I am just WOWed. Setch hit the head on the nail about the surges. I mean there is none to little it sits right were you set it even with my bleed style mbc. Now I have all the vaccum lines disconnect from the stock solenoid. I have a restictor in route to the wastegate so I can have a big enough bleed to adjust to the boost of my chioce. That means I would have to much air hitting the flood door and not a big enough bleed to bleed away air from the wastegate to be able to hit 22 psi.
I am just Thank you guys
Well since your story is a good one, i figure i should bring balance to the force....After having much problems trying to hold more than 15@redline, i decide to pull out alot of extra vacuum lines and rid the DSABC and pulled my intake, coil, and wires and replaced with stock parts. I did some of these parts because they are for sale. I set my mbc to spike around 22 hoping now it will hold better since i thought there was a leak on my dual stage bc setup.
BOOOOM!! Don't worry, that wasn't my motor making that noise, it was my hotside IC pipe blowing off. I thought i tightened the clamp down....Well i got to put the hose clamp back on, tighten it up good, and now i can only spike 15 and fall to like 8 at redline!!!! This is really pissing me off. The boost is building very slow too. These stock hose clamps are I am extremely broke and can't afford some T-bolt clamps untill hopefully tomorrow. If i tighten this thing down good, re-test for leaks and still can't hold more than 15@redline, i'm gonna shoot myself.
I'm glad yours is workin out for ya, maybe i need to go read a "how to" on not f*ckin things up.
Is your mbc ball and spring or bleed style? You should put some type of restrictor coming off your vacuum line from the turbo to your mbc to your wga. Think about it your resitricting air to the mbc before it gets to the wga. That means less air hitting the flapper and more boost to redline. U dont beleive me hook up your vaccum line to the turbo straight to your stock wga with the PT spring and promise you will not see no more than 10 psi. Cause all the air is hitting the flapper and deverting the exhaust away from the compressor wheel. Also use smaller vacuum lines. I say no more than 7/32 same concept restricting air to the mbc after it gets to the flapper. But still I use 7/32 vaccum lines and a restrictor. But holding more than 18 will be really hard to do since the turbine is so small.
tubro->resistor->mbc->wga
I use this as my restrictor and its barly open. I know its ghetto but it hides under the intake anyways so no one can see it.
But if you notice in the ad for stage one it says it holds more boost to redline because the stock solenoid has a different program and is restricting air to the wga and thats why it gets 15 psi in first gear rather than 10 like the stock pcm.
the pic is blurry...i have a ball and spring mbc but it also has it's own bleed at the end of it. So basically, the restrictor is like a bc for your bc? i have a vacuum valve that i could probably use for the same type of purpose. I am already using some small vac lines(1/4") and they barely fit over the nipple on the turbo. i'm gonna try fixing my ic pipe tomorrow and then try a restrictor. Where did you pick yours up from?
the pic is blurry...i have a ball and spring mbc but it also has it's own bleed at the end of it. So basically, the restrictor is like a bc for your bc? i have a vacuum valve that i could probably use for the same type of purpose. I am already using some small vac lines(1/4") and they barely fit over the nipple on the turbo. i'm gonna try fixing my ic pipe tomorrow and then try a restrictor. Where did you pick yours up from?
You can pick them up at home depot or lowes. I think its call an adjustable faucet. I say that 1/4 is still to big of vacuum lines. I would suggest 7/32 or even smaller 5/32. This may sound strange but when I use just a piece of 1/4 vaccum line at the nipple of the wga my boost would fall off really quickly but when I placed a 7/32 at the nipple it would drop slower. For me 7/32 was the sweet spot for vaccum lines. I say use the green line and place 7/32 over the end of it then to your mbc to wga. That is how I have mine set up since I had a problem with the 7/32 vacuum line fitting over the nipple of the turbo. 7/32 is like 40 cents a foot. I really dont think you will need a restrictor for the ball and spring mbc. Since the ball is the restrictor and you already have the bleed on the nipple of you mbc. A restictor you will need if you have a small bleed style mbc. I have built bleed style and ball and spring mbc's for other srt-4 owners just trust me on the vacuum lines. I have burnt two tanks of gas in day just testing the different vacuum lines w/ the spring mod. And the misses was just at me. Restricting air flow to the wga priceless.
You can pick them up at home depot or lowes. I think its call an adjustable faucet. I say that 1/4 is still to big of vacuum lines. I would suggest 7/32 or even smaller 5/32. This may sound strange but when I use just a piece of 1/4 vaccum line at the nipple of the wga my boost would fall off really quickly but when I placed a 7/32 at the nipple it would drop slower. For me 7/32 was the sweet spot for vaccum lines. I say use the green line and place 7/32 over the end of it then to your mbc to wga. That is how I have mine set up since I had a problem with the 7/32 vacuum line fitting over the nipple of the turbo. 7/32 is like 40 cents a foot. I really dont think you will need a restrictor for the ball and spring mbc. Since the ball is the restrictor and you already have the bleed on the nipple of you mbc. A restictor you will need if you have a small bleed style mbc. I have built bleed style and ball and spring mbc's for other srt-4 owners just trust me on the vacuum lines. I have burnt two tanks of gas in day just testing the different vacuum lines w/ the spring mod. And the misses was just at me. Restricting air flow to the wga priceless.
i've actually read that thread before, thats where i found the mbc i'm using. go back in that thread and scroll down untill you see a copper mbc. thats the one i have. i never understood how you can fit a small vac line like that over anything. 1/4 in seams to be the smallest i would be able to fit. thanks for the help, i just bought some t-bolt clamps today and hopefully they will solve my problem.
Ok looks like I might be looking into moddifing the stock WGA's. I have 10 right now and I might be getting more to drop this spring into, talk about the ultimate sleeper.
bnice01, excellent write up. I am very happy to see that you are getting the gains in boost that you are seeing. 22 falling to 18 at redline is just crazy and all that on the stock WGA with only 2 hours worth of work.
bnice01, excellent write up. I am very happy to see that you are getting the gains in boost that you are seeing. 22 falling to 18 at redline is just crazy and all that on the stock WGA with only 2 hours worth of work.
bnice01, excellent write up. I am very happy to see that you are getting the gains in boost that you are seeing. 22 falling to 18 at redline is just crazy and all that on the stock WGA with only 2 hours worth of work.
So if we are looking to hold around 15psi just use the PT upgrade spring...if we are looking to hold more use both? I wonder what would happen with PCM boost control...I'm sure it would adjust it down, but would it hold higher?
i've actually read that thread before, thats where i found the mbc i'm using. go back in that thread and scroll down untill you see a copper mbc. thats the one i have. i never understood how you can fit a small vac line like that over anything. 1/4 in seams to be the smallest i would be able to fit. thanks for the help, i just bought some t-bolt clamps today and hopefully they will solve my problem.
My 7/32 fits no problem since I use the green off the turbo and place the 7/32 over the end of the green line were it is suppose to hook up to the stock solenoid. I know 7/32 will not fit over the turbo nipple. i hope everything goes good for you.
bnice01, excellent write up. I am very happy to see that you are getting the gains in boost that you are seeing. 22 falling to 18 at redline is just crazy and all that on the stock WGA with only 2 hours worth of work.
No problem just trying to put some pic's together to help out but the real thanks goes to you and turbosetch. I mean the power is instant and no surging. With that turnbuckle spring mod I had that thing so tight just to hold 18 to redline but I had to be in really high rpms just not to get a 27 psi surge and drop to 22 where I set it. Then it would still drop fast to 18 after hitting 22. I will tell you to make sure to wear mechanic gloves some of this shit is sharp. I would say this was not to bad of install like putting in some hard pipes But fourth gear is what I really want to see the results if this weather clears up.
ok update, i installed some t-bolt clamps and my leaks are gone now. I am spiking 22 and falling to 15 at redline still, but it is holding better(18 till about 5500). I think the bleed on my mbc may be clogged. if not i'm going to try a small bleed after the mbc. if that don't work, i'll try the smaller vac lines. And if that doesn't work i'm going to give up...I still haven't tried in 4th yet, but we'll see. Still much better than stock.
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Thank you guys
This is really pissing me off. 
The boost is building very slow too. These stock hose clamps are 
I am extremely broke and can't afford some T-bolt clamps untill hopefully tomorrow. If i tighten this thing down good, re-test for leaks and still can't hold more than 15@redline, i'm gonna shoot myself. 
Restricting air flow to the wga priceless.
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