Need O2 Housing Suggestions
Feb 21, 2010, 12:10 PM
#19
P.S. Didn't you quit EvoM and swear you were done with it and would never return? Pretty sure I read a bunch of posts like that over on your board.
Last edited by Kracka; Feb 21, 2010 at 12:18 PM.
Feb 21, 2010, 12:29 PM
#23
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Between myself and two other shops we've tested every dump 02 housing currently made and they all lost power over the good recirculating housings. If you have a POS exhaust system on the car that is just overly restrictive that testing could change. If you have a quality exhaust on the car that isn't backing up the exhaust then the dumps suck.
Last edited by Silk; Feb 21, 2010 at 12:32 PM.
Feb 21, 2010, 12:32 PM
#24
I too would like to see that data comparing the internally recirculated o2 housings vs. the dumps. I'm not a fan of external dumps at all since I think they obnoxious and always assumed the claimed power gains were bogus, but I didn't expect them to actually lose power.
For clarification, I'm not calling any of the o2 housings/dumps on the market junk, I just saying I favor the internally routed option (which some have; at least MAP's) or the more traditional o2 housing style such as the Megan or Buschur.
For clarification, I'm not calling any of the o2 housings/dumps on the market junk, I just saying I favor the internally routed option (which some have; at least MAP's) or the more traditional o2 housing style such as the Megan or Buschur.
Last edited by Kracka; Feb 21, 2010 at 12:35 PM.
Feb 21, 2010, 12:36 PM
#25
True 3" 02 Housing and 2.25 external dump.
I honestly think 02 dumps are the way to go only if you have a good product. Currently the Shearer 3" 02 dump is the only 02 dump on the market that I would run/purchase for my car. I have one that R/TErnie custom made me before Shearer came out with the one they have now. It is a direct replica of the one I have. However, I believe they use a 2" dump and I use a 2.25" tear dropped dump. We also used the JFM flange which is the same one that Shearer chose to use for their dump. It allows the flapper to fully open eliminating boost creep and the cnc work on the flange reduces the wastegate turbulence after the flapper mouth.
As for what Dave said about 02 dumps not making power, I think the right one does! I have a moderate build with an unported 84mm FP Red, and small HKS cams and I make 535/438 on 29psi. I popped 30.1psi on one cell but the rest of the run was 29.5psi. I am making more power than most of FP Black cars on the stock motor at the same boost level. I honestly can't tell you why my car makes the power it does but I believe it is my external dump, PERIOD. There are not really any other cars near my power on 30psi and my mods. I really think the dump opened up my Red. But what do I know. I don't own a shop or a 1000hp drag car.
If you care to look at my 02 dump, here are some pics and below is the link to my dyno.
https://www.evolutionm.net/forums/ev...red-535hp.html
Only get an 02 housing once. Get the best...
Mikey
I honestly think 02 dumps are the way to go only if you have a good product. Currently the Shearer 3" 02 dump is the only 02 dump on the market that I would run/purchase for my car. I have one that R/TErnie custom made me before Shearer came out with the one they have now. It is a direct replica of the one I have. However, I believe they use a 2" dump and I use a 2.25" tear dropped dump. We also used the JFM flange which is the same one that Shearer chose to use for their dump. It allows the flapper to fully open eliminating boost creep and the cnc work on the flange reduces the wastegate turbulence after the flapper mouth.
As for what Dave said about 02 dumps not making power, I think the right one does! I have a moderate build with an unported 84mm FP Red, and small HKS cams and I make 535/438 on 29psi. I popped 30.1psi on one cell but the rest of the run was 29.5psi. I am making more power than most of FP Black cars on the stock motor at the same boost level. I honestly can't tell you why my car makes the power it does but I believe it is my external dump, PERIOD. There are not really any other cars near my power on 30psi and my mods. I really think the dump opened up my Red. But what do I know. I don't own a shop or a 1000hp drag car.
If you care to look at my 02 dump, here are some pics and below is the link to my dyno.
https://www.evolutionm.net/forums/ev...red-535hp.html
Only get an 02 housing once. Get the best...
Mikey
Last edited by BLKCarbonEVO; Feb 21, 2010 at 12:41 PM.
Feb 21, 2010, 01:01 PM
#26
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Hey all, I'm looking for some o2 housing suggestions for this set-up:
BBK Full Turbo Kit
1000cc injectors
Kelford 272 Camshafts
Supertech Dual Springs + Retainers
ARP Head Studs
Walbro 255 lph Fuel Pump
AMS LICP
AMS FMIC
Port/Polish/Coated Stock Manifold
91 Octane
Thanks Evom!
BBK Full Turbo Kit
1000cc injectors
Kelford 272 Camshafts
Supertech Dual Springs + Retainers
ARP Head Studs
Walbro 255 lph Fuel Pump
AMS LICP
AMS FMIC
Port/Polish/Coated Stock Manifold
91 Octane
Thanks Evom!
Feb 21, 2010, 02:41 PM
#29
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I am curious as to how some other tuners/shops feel about this o2 housing dilemma. I love how a dumped external gate sounds/performs. But I hate how a dumped o2 housing sounds. But I run the epm as the power claims appeal to me.
Feb 21, 2010, 02:54 PM
#30
I love how a dumped external gate sounds/performs. But I hate how a dumped o2 housing sounds.
http://www.youtube.com/watch?v=VBxjfEoAJqk (My car at 520hp)
http://www.youtube.com/watch?v=9GamY...eature=related
Mikey