Guys with 180mm and no cats - Come in
Thread Starter
Junior Member
Joined: Oct 2018
Posts: 49
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03 e55
Guys with 180mm and no cats - Come in
I am currently running a 180mm lower with a stock upper. The car has eurocharged mid lenghts with no cats or resonators.
I am wondering what type of boost numbers you all are seeing. I am at sea level and my car will show about anywhere from 8-9 psi in 1st gear, 8-9 in 2nd gear, and 10-11 psi in 3rd gear. Also i am loosing boost at higher Rpm. At the top of 3rd gear the car is only showing 8.4 psi. I feel as though these numbers are a little low.
Do you all see boost drop off at high RPM?? Do these numbers seem low??
I am wondering what type of boost numbers you all are seeing. I am at sea level and my car will show about anywhere from 8-9 psi in 1st gear, 8-9 in 2nd gear, and 10-11 psi in 3rd gear. Also i am loosing boost at higher Rpm. At the top of 3rd gear the car is only showing 8.4 psi. I feel as though these numbers are a little low.
Do you all see boost drop off at high RPM?? Do these numbers seem low??
Super Member
Joined: May 2013
Posts: 522
Likes: 15
2002 C32AMG
cooling has nothing to do with boost.
OP probably has lowish boost at high rpms due to belt slip (look for black dust around the pulley) or most likely because he's got no headers and no cats which makes for a very high flow system.
