[Shayan55]

hey guys so like the title says, i reinstalled my BMS intake and got a CEL i ran the code and it pretty much said that the MAF was reading too much air. Do any of you guys have suggestions or advice on how I can use my intake or why its causing a CEL?

[Questofthetune]

Interested as well. Really want an intake but CEL kills me.

[Shayan55]

Originally Posted by Questofthetune

Interested as well. Really want an intake but CEL kills me.

Yea i had the BMS on for a while with no problems at all then my motor seized from an oil pump issue and now i got the new motor and reinstalled the intake and got a CEL

[Questofthetune]

Hmm that's strange- I guess the computers have personalities?

[Mike@N54Tuning.com]

Have a JB4?

Mike

[Shayan55]

Originally Posted by Mike@N54Tuning.com

Have a JB4?

Mike

Not yet. Want one though

[Questofthetune]

Originally Posted by Mike@N54Tuning.com

Have a JB4?

Mike

Jb4 suppresses the CEL right?

[Shayan55]

Originally Posted by Questofthetune

Jb4 suppresses the CEL right?

Well the intake shouldn't give a CEL anyway

[Joe240]

Only suggestion I would have is removing the cone and making sure the area is clean where it meets the adapter and also from the adapter to the intake piping. Maybe something isn't completely tight so it's pulling in extra air from somewhere.

[Shayan55]

Originally Posted by Joe240

Only suggestion I would have is removing the cone and making sure the area is clean where it meets the adapter and also from the adapter to the intake piping. Maybe something isn't completely right so it's pulling in extra air from somewhere.

Okay ill try that. Thanks man

[Joe240]

Np. Hope it works out for you. Really odd that it would be fine originally and now it's not. A motor swap doesn't change the ecu so it's not a difference if a computer

[Shayan55]

Originally Posted by Joe240

Np. Hope it works out for you. Really odd that it would be fine originally and now it's not. A motor swap doesn't change the ecu so it's not a difference if a computer

Yea thats why i was very confused

[Fabspeed Motorsport]

It seems that the BMS intakes are hit or miss. I know people who have installed them, never touched it again and it worked fine. Other people have installed it and have gotten a CEL almost right away.

I have the BMS intake on my M235i and got the same CEL reading as you did. I noticed that there was a rubber grommet over the nipple right before the MAF sensor that was a little loose. I took a small zip tie, tightened it onto the nipple and I haven't had a problem since. Now I don't know if doing that is what solved the issue or it just ironically happened at the same time, but it is something you can try!

[Shayan55]

Originally Posted by Fabspeed Motorsport

It seems that the BMS intakes are hit or miss. I know people who have installed them, never touched it again and it worked fine. Other people have installed it and have gotten a CEL almost right away.

I have the BMS intake on my M235i and got the same CEL reading as you did. I noticed that there was a rubber grommet over the nipple right before the MAF sensor that was a little loose. I took a small zip tie, tightened it onto the nipple and I haven't had a problem since. Now I don't know if doing that is what solved the issue or it just ironically happened at the same time, but it is something you can try!

Thanks! Ill look i to that!

[mike@x-ph.com]

Originally Posted by Fabspeed Motorsport

It seems that the BMS intakes are hit or miss. I know people who have installed them, never touched it again and it worked fine. Other people have installed it and have gotten a CEL almost right away.

I have the BMS intake on my M235i and got the same CEL reading as you did. I noticed that there was a rubber grommet over the nipple right before the MAF sensor that was a little loose. I took a small zip tie, tightened it onto the nipple and I haven't had a problem since. Now I don't know if doing that is what solved the issue or it just ironically happened at the same time, but it is something you can try!

Correct, if car is equipped with a JB4 you wont run with this issue for sure

[Shayan55]

Originally Posted by mike@x-ph.com

Correct, if car is equipped with a JB4 you wont run with this issue for sure

Yea i dont have a jb4. But i dont understand why it didn't throw a code on the original motor. But it is on the new one. Cuz they never touched the ecu or anything

[Joe240]

Each engine is its own air pump. Not all motors are created equal so maybe this one pulls ever so slightly more air and that's why it's triggering? I'm not a scientist 😁

[Shayan55]

Originally Posted by Joe240

Each engine is its own air pump. Not all motors are created equal so maybe this one pulls ever so slightly more air and that's why it's triggering? I'm not a scientist 😁

Idk honestly man

[Shayan55]

update: so i put intake back on again after the break-in period and put about 40-50 miles on it and so for havent gotten a CEL fingers crossed that it doesnt pop up anytime soon

[Joe240]

Originally Posted by f22_shayan

update: so i put intake back on again after the break-in period and put about 40-50 miles on it and so for havent gotten a CEL fingers crossed that it doesnt pop up anytime soon

nice. glad it's working for you again and hopefully stays that way

[Shayan55]

Originally Posted by Joe240

nice. glad it's working for you again and hopefully stays that way

Yea hopefully man. And for when i eventually get a jb4 i shouldnt worry about any maf codes or intake related codes right? Because the jb4 will automatically clear them?

[jmwilson125]

Originally Posted by f22_shayan

Yea hopefully man. And for when i eventually get a jb4 i shouldnt worry about any maf codes or intake related codes right? Because the jb4 will automatically clear them?

I had the same issue with my injen intake and got a jb4 which cleared the code. Then I unplugged my maf to run it maf less whichakes it run much more smoothly.