Alex Wilson

[Alex wilson]

I have a 350z 2007 with a vq35de 

 

I have just purchased japspeed sports cats from japseed themselves.

 

after looking at my current regular cats that are fitted I noticed a 02 sensor in the middle of both cats. There is also a pre cat sensor mounted on my exhaust manifolds ( not on the cat section )

 

the new sports cats only have one cat each side on the lower part of the exhaust with two 02 sensor mountings.

 

these mounts are in a completely different place to where mine are currently.

 

i was wondering if anybody new about this have I purchased the wrong cats ( EVEN THOUGH MY CAR IS A VQ35DE )

 

please help…..

[Keith D]

The bung locations I believe are for different years and engines DE/Rev Up/HR.  It will be a universal aftermarket cat.

 

The OE cat has 2 substrates (the honeycombe filter bit) a HFC will have only one.

 

The 'pre cat' sensor is for air fuel ratio, the 'post cat' monitors the cat efficiency.  You'll likely want to get the post cat sensors disabled so they don't throw a fault, so it doesn't really matter which bung you use.  Fit the sensors back to suit a tidy harness run.