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.
What will happen to those levels when it's 95 degrees and 95% humidity in the summer? Won't they go through the roof? (Sorry if this was answered; I haven't read every post.)
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.
Dude happy that everything is going good for you now but yeah once you reach the point pass the vac lines I will be as clueless as you.
I am doing 22.5 no problem with just the PTP spring so you will be able to do it with no problem. So it sounds like with both springs your holding 18. I can't see the pics but thats cool.
PTP --- Can you get an even stiffer spring or longer one for more pre-load. It seems as though most that do only the PTP spring are seeing about 15 to redline. 18 to redline would be the goal here. I was also considering adding some big washers above the spring but I wanted this to be clean and not so rigged. So what say?? Stiffer or longer spring?
Well since you are taking boost control away from the computer, it will not compensate based on the ambient temperature. You are now in control of boost. Say you set it at 15 psi, it will always be 15 psi. Now, knowing that cold air is more dense than hot, it you are cramming 15 psi of cold air into you motor, it will more airflow, measured in cfm. Your boost gauge will show the same, but in actuality, you will be boosting more cfm.
You know that the stock ecu compensates boost based on temperature. When it is 35* outside, say you spike 12 psi, but when it is 75*, you spike say 15 psi. The ecu is changing boost to keep the cfm being pushed into your motor in the same range.
Hope I didn't confuse you, I may have. Here's a simpler breakdown:
x psi of cold air has greater cfm than x psi of hot air
Keep in mind these results are with out our boost control...the pcm is out of the picture. But yes I agree colder air more dense which is easier compress for boost.
I am doing 22.5 no problem with just the PTP spring so you will be able to do it with no problem. So it sounds like with both springs your holding 18. I can't see the pics but thats cool.
PTP --- Can you get an even stiffer spring or longer one for more pre-load. It seems as though most that do only the PTP spring are seeing about 15 to redline. 18 to redline would be the goal here. I was also considering adding some big washers above the spring but I wanted this to be clean and not so rigged. So what say?? Stiffer or longer spring?
I can look into it. A stiffer or longer unit.... , sorry couldnt help it.
I'll be doing some testing with the stock unit, PTP's spring, and the Stage 0 PCM in control of boost when I get a chance. Might need to get bnice01's help if he is willing...but...I'm guessing it will still help quite a bit with holding more a redline, right?
Nice write up. Now just cut and thread the WGA arm to make it adjustable. I think FWD Performance (who specializes in parts for the older turbo Dodge's) has been selling a new, modified "stock" WGA for a while now. If you're trying to maintain the stock look and are afraid to touch one yourself it might be an option, but this is definitely cheaper. Start spending too much and an aftermarket WGA's will have some benefits like the adjustability.
I'll be doing some testing with the stock unit, PTP's spring, and the Stage 0 PCM in control of boost when I get a chance. Might need to get bnice01's help if he is willing...but...I'm guessing it will still help quite a bit with holding more a redline, right?
Yeah dude I am local. I think I remember you from that srt-4 wrx meet that went to shit.
i just picked up a profec ebc and was wondering if i would need to mod my s2 wga to e able to boost to 19lbs spike say15 to redline?
whats the most you think i could get out of it?
If you have S2 according to your sig and have enough fuel, have you tried tightening down the S2 WGA to see what it will hold? On a boost leak free car you should be able to get pretty close to that without having to modify or switch WGA's.
AutoForums.com is the premier network of enthusiast-owned
enthusiast-operated automotive communities.
We operate more than 100 automotive forums where our users consult peers for shopping information and advice, and share
experiences and opinions as a community.
, sorry couldnt help it.
I think FWD Performance (who specializes in parts for the older turbo Dodge's) has been selling a new, modified "stock" WGA for a while now. If you're trying to maintain the stock look and are afraid to touch one yourself it might be an option, but this is definitely cheaper. Start spending too much and an aftermarket WGA's will have some benefits like the adjustability.
Linear Mode
