psd turbo
Posting Guru
Joined: Mar 2009
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yeah like falcon said, with your foot in it at stock youll get 15 and 18 at most, but a downpipe really helps and then tunes will set you over 20, but you dont want to go much over 25 any how, journel bearings are not stable enough in these stock turbos to handle that much
Senior User
Joined: Dec 2007
Posts: 452
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From: Lizton, IN
I get 17-19 when WOT. It has Superchips tuner, 3" DP and 4" straight pipe, and 6637.
I only get around 15 if I'm not using the superchip.
I hope to see 25+ once my stage I's and PHP chip is installed.
I only get around 15 if I'm not using the superchip.
I hope to see 25+ once my stage I's and PHP chip is installed.
VT Chapter Ldr
Joined: Apr 2004
Posts: 96,140
Likes: 294
From: Orange, Vermont
I just put a boost gauge in this past weekend and I am surprised at little boost there is during normal driving. Basically need to be going up a hill or accelerating hard. Even driving on the interstate at 65 and 1700rpm, there might be 1-2 psi. I thought I would be seeing 5 psi for normal driving, but I thought wrong.
Hotshot
Joined: Oct 2003
Posts: 17,799
Likes: 104
From: Ashland City, TN
It doesn't need to throw in extra air, its pushing it in, but it only pushes when there is load, cause that's when the turbo spools higher.
A smaller turbo would give you 5 psi at normal driving I would think. less to spin.
A smaller turbo would give you 5 psi at normal driving I would think. less to spin.
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Senior User
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From: Lizton, IN
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Brett Foote
VT Chapter Ldr
Joined: Apr 2004
Posts: 96,140
Likes: 294
From: Orange, Vermont
I haven't put my foot into it too much since the gauges but have seen it a little above 15, maybe close to 17. Maybe I will try it this afternoon sometime, if I do I will let you know.
VT Chapter Ldr
Joined: Apr 2004
Posts: 96,140
Likes: 294
From: Orange, Vermont
I got on it a couple of times and saw 17pounds for a second, just before upshift. Might be 1 or 2 psi more if pulling hard up hill but I think that might be it.
Maybe the reason some guys see more is at what altitude they are at. Not sure if this is correct but someone in Colorado might see higher boost because of thinner air then someone in Florida. In Vermont I am generally in the 500-1500 ft range.
Maybe the reason some guys see more is at what altitude they are at. Not sure if this is correct but someone in Colorado might see higher boost because of thinner air then someone in Florida. In Vermont I am generally in the 500-1500 ft range.
Hotshot
Joined: Oct 2003
Posts: 17,799
Likes: 104
From: Ashland City, TN
http://www.riffraffdiesel.com/
You can call up riff raff and buy a kit.
Make sure you tell him you have an OBS, cause he has to make the OBS pipes.
or you can order them at Napa
http://www.fleetfilter.com/Store_Vie...cts.asp?Cat=53
30 here
or 55 at napa.
I think the kits from riff raff are 50-70 dollars, or something.
Just need the filter, a clamp, and a 4" 45.
You can call up riff raff and buy a kit.
Make sure you tell him you have an OBS, cause he has to make the OBS pipes.
or you can order them at Napa
http://www.fleetfilter.com/Store_Vie...cts.asp?Cat=53
30 here
or 55 at napa.
I think the kits from riff raff are 50-70 dollars, or something.
Just need the filter, a clamp, and a 4" 45.