Lowering Boost
Thread Starter
Melting Slicks
Joined: Mar 2004
Posts: 3,470
Likes: 18
From: Lake Ozark, MO
Lowering Boost
How can I change the boost "curve" on my Procharger...I would like for it to come on a little harder lower...I'm not into winding it to 6K to get it to turn hard....
Twin Turbo Coupe
Joined: Apr 2005
Posts: 768
Likes: 0
From: Frederick MD
You can run a smaller pulley and a restrictor plate. Call Doug or Chris at ECS...They will get you what you need.
Thread Starter
Melting Slicks
Joined: Mar 2004
Posts: 3,470
Likes: 18
From: Lake Ozark, MO
How much are we going to change the RPM range where boost starts coming on by reducing the pully and adding the plate? Any recommedation on pulley size...I'd rather have power in lower to mid range then upper.
Last question - what happens when you raise RPM beyond the effective boost range (if I make it come on lower), does the blow off work, do you loose power, or what?
Last question - what happens when you raise RPM beyond the effective boost range (if I make it come on lower), does the blow off work, do you loose power, or what?
Le Mans Master
Joined: Nov 2005
Posts: 6,344
Likes: 22
From: Alexandria VA
Also you could look at swapping out for a D1 which if I recall has a better boost ramp rate due to the impeller angles.
I'm going to just spin mine (P1) up w/ a restrictor plate setup from ECS.
I'm going to just spin mine (P1) up w/ a restrictor plate setup from ECS.
Instructor
Joined: Mar 2006
Posts: 107
Likes: 0
How much are we going to change the RPM range where boost starts coming on by reducing the pully and adding the plate? Any recommedation on pulley size...I'd rather have power in lower to mid range then upper.
Last question - what happens when you raise RPM beyond the effective boost range (if I make it come on lower), does the blow off work, do you loose power, or what?
Last question - what happens when you raise RPM beyond the effective boost range (if I make it come on lower), does the blow off work, do you loose power, or what?
In my experience the P1SC is stronger on the bottom end, the D1SC having a more agressive airflow curve when it gets rolling. It really depends on the exact model.
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