BMC CDA and MAF sensors - help please

[tigerj360]

Hi guys I have tried the search function and google but can't find this anywhere!

I just fitted my bmc cda to my 1.8T ARZ and I'm well impressed! However I had to blank out the maf to test it as I didn't have the right pipe size I'm guessing, I have gone straight to the bmc and cut out the maf and it's housing.



(excuse the crappy pic)

So what I'm thinking is I have a reducer but I need the right size pipe from the maf housing to the reducer. Does any one know what size pipe I will need from the maf housing to the reducer (they are the same diameter)

Thanks guys!

[Wayne]

Standard MAF is 75mm, if your kit is the same as mine it will be 80mm.

[tigerj360]

Standard MAF is 75mm, if your kit is the same as mine it will be 80mm.

Sweet thanks Wayne, where's the best place to pick up a bit of 80mm pipe? Home base or does it need to be a certain type? 

[Wayne]

Standard MAF is 75mm, if your kit is the same as mine it will be 80mm.

Sweet thanks Wayne, where's the best place to pick up a bit of 80mm pipe? Home base or does it need to be a certain type? 

Any pipe will do the job

[tigerj360]

Thanks for all the help Wayne your a star

Another quick question, what do I do with the other hose which enters the air box? I noticed some people said to put a filter of some sort on it?

You might be able to see it on my pic tucked to the left of the BMC next to the engine cover.

[Dalo Harkin]

Thanks for all the help Wayne your a star

Another quick question, what do I do with the other hose which enters the air box? I noticed some people said to put a filter of some sort on it?

You might be able to see it on my pic tucked to the left of the BMC next to the engine cover.

remove the SAI 

[tigerj360]

Thanks for all the help Wayne your a star

Another quick question, what do I do with the other hose which enters the air box? I noticed some people said to put a filter of some sort on it?

You might be able to see it on my pic tucked to the left of the BMC next to the engine cover.

remove the SAI 

Thanks mate so just completely take that hose off?

[shaft69]

Standard maf is 70mm, mine 70mm on AUM had to get silicone hose fit 70-76mm fit maf to my 3" velicty stack.

[Wayne]

Another quick question, what do I do with the other hose which enters the air box? I noticed some people said to put a filter of some sort on it?

I put a small breather filter in mine. (less than a fiver on ebay)

[tigerj360]

Thanks for all the help, does anyone know if it will cause any harm running without the MAF until i can source a 80mm pipe?