No 02 Dump in the market?
Sooooooooo??????? Any of the guys who said they're going to start making them, any news? I'm getting antsy 
I'm starting to put together my mod list for mid winter - early spring. I want to know whether or not to include just an o2 housing, or o2 dump
I'm starting to put together my mod list for mid winter - early spring. I want to know whether or not to include just an o2 housing, or o2 dump
I have a notion:
...When using an o2 dump we can expect to control boost more precisely....i.e. eliminate the spike..... The o2 dump isnt gonna help us keep higher boost at redline (or is it?). It simply reduces the chances of overboosting, a condition plaguing our small quick-boosting turbos. Opinions?
...When using an o2 dump we can expect to control boost more precisely....i.e. eliminate the spike..... The o2 dump isnt gonna help us keep higher boost at redline (or is it?). It simply reduces the chances of overboosting, a condition plaguing our small quick-boosting turbos. Opinions?
On the other hand, the O2 dump would allow more efficient waste gate bleed flow, thus, maybe it would accomplish what you are suggesting. That is, it would allow more positive boost control and reduce overboost tendencies(spiking).
Now, I am totally confused
.
MP Fabrication just finished putting the O2 dump on my friend's car last week. He's still got it at the shop and I'm hoping to swing by soon to check it out. He made a jig for the piece, so I'm sure he's able to make more easily.
If you guys are interested, why not just give him a call? The shop number is (205)985-1953. Walker is the guy you want to talk to. You could maybe e-mail or PM him as well ... he usually gets back to me quickly when I do that.
If you guys are interested, why not just give him a call? The shop number is (205)985-1953. Walker is the guy you want to talk to. You could maybe e-mail or PM him as well ... he usually gets back to me quickly when I do that.
Last edited by TouringBubble; Nov 29, 2007 at 12:20 PM.
If what Big Al is saying about O2 dumps reducing overall exhaust backpressure is true, then it might tend to increase any tendency toward boost creep, since a reduction in backpressure will allow the turbine wheel to increase rotational speed, thus incrementing compressor speed proportionally. So, it would tend to increase boost wouldn't it?
On the other hand, the O2 dump would allow more efficient waste gate bleed flow, thus, maybe it would accomplish what you are suggesting. That is, it would allow more positive boost control and reduce overboost tendencies(spiking).
Now, I am totally confused .
On the other hand, the O2 dump would allow more efficient waste gate bleed flow, thus, maybe it would accomplish what you are suggesting. That is, it would allow more positive boost control and reduce overboost tendencies(spiking).
Now, I am totally confused
.EDIT :: Let me rephrase this ... boost creep is usually caused by limited flow through the wastegate, not too much flow from the turbine. Reducing back pressure will increase the efficiency of both the turbine and the wastegate, likely resulting in better, faster wastegate response and higher potential boost levels.
Last edited by TouringBubble; Nov 29, 2007 at 06:51 AM.
MP Fabrication just finished putting the O2 dump on my friend's car last week. He's still got it at the shop and I'm hoping to swing by soon to check it out. He made a jig for the piece, so I'm sure he's able to make fairly easily.
If you guys are interested, why not just give him a call? The shop number is (205)985-1953. Walker is the guy you want to talk to. You could maybe e-mail or PM him as well ... he usually gets back to me quickly when I do that.
If you guys are interested, why not just give him a call? The shop number is (205)985-1953. Walker is the guy you want to talk to. You could maybe e-mail or PM him as well ... he usually gets back to me quickly when I do that.
Actually, Walker was able to post some stuff before I could get down there. Check out this page ... http://www.mpfab.com/dumpatron/. If I can get down there soon I'll try to get different pics. Maybe he'll have one on the bench.
He also made a video it seems. http://www.mpfab.com/MPFabO2Dumpatron.mpg. It definitely sounds mean! I can't wait to go for a ride with Cesar when he gets the car back.
He also made a video it seems. http://www.mpfab.com/MPFabO2Dumpatron.mpg. It definitely sounds mean! I can't wait to go for a ride with Cesar when he gets the car back.
Actually, Walker was able to post some stuff before I could get down there. Check out this page ... http://www.mpfab.com/dumpatron/. If I can get down there soon I'll try to get different pics. Maybe he'll have one on the bench.
He also made a video it seems. http://www.mpfab.com/MPFabO2Dumpatron.mpg. It definitely sounds mean! I can't wait to go for a ride with Cesar when he gets the car back.
He also made a video it seems. http://www.mpfab.com/MPFabO2Dumpatron.mpg. It definitely sounds mean! I can't wait to go for a ride with Cesar when he gets the car back.
to mpfab!
Actually, Walker was able to post some stuff before I could get down there. Check out this page ... http://www.mpfab.com/dumpatron/. If I can get down there soon I'll try to get different pics. Maybe he'll have one on the bench.
He also made a video it seems. http://www.mpfab.com/MPFabO2Dumpatron.mpg. It definitely sounds mean! I can't wait to go for a ride with Cesar when he gets the car back.
He also made a video it seems. http://www.mpfab.com/MPFabO2Dumpatron.mpg. It definitely sounds mean! I can't wait to go for a ride with Cesar when he gets the car back.
