question about boost
Thread Starter
|
Senior User
Joined: Apr 2004
Posts: 319
Likes: 0
question about boost
well today i installed a 4" exhaust from turbo back and i was wondering if if that would cuase my boost level to drop
before i changed i had a 3.5 down pipe and 3.5 exhaust
went to 4 " from turbo back
my boost went from 32psi before to 27 psi boost after and yes i do have the wast gate unhooked
oh and i do have a garrett b.b. turbo and open element ( nappa )
does this sound right can anyone shed some light on this
thanks
before i changed i had a 3.5 down pipe and 3.5 exhaust
went to 4 " from turbo back
my boost went from 32psi before to 27 psi boost after and yes i do have the wast gate unhooked
oh and i do have a garrett b.b. turbo and open element ( nappa )
does this sound right can anyone shed some light on this
thanks
Elder User
Joined: Nov 2004
Posts: 798
Likes: 0
Originally Posted by t.j.g.
well today i installed a 4" exhaust from turbo back and i was wondering if if that would cuase my boost level to drop
before i changed i had a 3.5 down pipe and 3.5 exhaust
went to 4 " from turbo back
my boost went from 32psi before to 27 psi boost after and yes i do have the wast gate unhooked
oh and i do have a garrett b.b. turbo and open element ( nappa )
does this sound right can anyone shed some light on this
thanks
before i changed i had a 3.5 down pipe and 3.5 exhaust
went to 4 " from turbo back
my boost went from 32psi before to 27 psi boost after and yes i do have the wast gate unhooked
oh and i do have a garrett b.b. turbo and open element ( nappa )
does this sound right can anyone shed some light on this
thanks
TJ that doesn't sound right. But then my truck came with 4" exhaust, and 27 psi is about what I'm getting with stock filter and muffler. Try PMing either cookie88, or dockboy....their into power, and might be able to shed some light on this.
FTE Leadership Emeritus
Joined: May 2001
Posts: 13,653
Likes: 6
From: Cabot, Arkansas
I'm not into power. I just want it to run like International shoulda built it in the first place 
It's not uncommon to loose boost with a bigger exhaust. Less restriction in the exhaust means the turbo is spinning slower.
It's not uncommon to loose boost with a bigger exhaust. Less restriction in the exhaust means the turbo is spinning slower.
Elder User
Joined: Nov 2004
Posts: 798
Likes: 0
Originally Posted by cookie88
I'm not into power. I just want it to run like International shoulda built it in the first place
It's not uncommon to loose boost with a bigger exhaust. Less restriction in the exhaust means the turbo is spinning slower.
It's not uncommon to loose boost with a bigger exhaust. Less restriction in the exhaust means the turbo is spinning slower.
Ok.....I see. The old path of least resistance. The gasses either push the turbine or take the easier route out the exhaust pipe.
Postmaster
Joined: Jan 2004
Posts: 4,758
Likes: 7
From: colorado
yes is does sound right, as cookie said the more stuff you take out of the way the less restriction you will have. i noticed a slight reduction in boost when i did my "AIH delete" mod
when did they start running H2O/METH on those things anyway 
Originally Posted by cookie88
I'm not into power. I just want it to run like International shoulda built it in the first place
Last edited by wlihntr; Jul 17, 2005 at 01:11 AM.
FTE Leadership Emeritus
Joined: May 2001
Posts: 13,653
Likes: 6
From: Cabot, Arkansas
Haha...ok, so maybe I'm into power a little bit. I'm not in the same league as Dock and the rest of the high HP bunch.......mostly because I don't have the kind of cash it takes build an engine like that. Course, we'd all have 600 horse monster mills if all it took was willpower.
Last edited by cookie88; Jul 17, 2005 at 01:42 AM.
