Thread: 280whp 540i
View Single Post
Old 08-01-2012, 08:35 AM
bricas45's Avatar
bricas45 bricas45 is offline
Officially Welcomed to the 'Fest
Location: Virginia
Join Date: Jan 2009
Posts: 1,041
Mein Auto: 335i, 540i6, X5
Originally Posted by King540i View Post
I know you are in Newhampshire, but do you know if the headers are CA carb certified? Also, what do you mean by 'MAF' as a mod?
In terms of the 100 cell cats, the lower the cell count, the better correct? Which cats did you use and from where?
I highly doubt the headers are carb certified. I really have no idea what "carb certified" entails. All my state does for hook up an OBD and give the car a visual look over.

The lower the cell the better they flow, but let "catalytic converting" they do. 100 cell barely do anything...any state that hooks a sniffer to your pipe these will not pass. I have random technology 144-30000- 4" diameter body with 3" inlet/outlet racing cats.
The exhaust is a bit smelly.

By modified MAF that is the housing. It is larger and smoother than stock. The sensor itself is the same and unchanged. Doing this absolutely require modifying the ECU to be able to meter correctly.
2013 - X5 35D
2009 - 335i coupe FBO
2001 - SC 540i
1986 - 318i Turbo
Reply With Quote