SC CEL

Hi guys, after installing the TRD supercharger and flash from the dealer I keep throwing the 101 MAF performance/range code. Once cleared it usually comes back within 10 minutes of drive time. I pulled the MAF sensor the other day and cleaned with the proper cleaner, and got about 20 min plus of drive time before throwing the code. I've had a drop in K&N air filter for a while that I cleaned a few months ago. It isn't dirty and not over oiled. I'm expecting a throttle body spacer today but don't want to install until this code is squared away. Should I replace the sensor or could it be something else? Thanks for reading!

 

What air box are you running?

 

Stock airbox

 

Trd supercharger? Or magnusson?

 

The trd

 

That’s the problem. You need the trd supercharger air box too.

 

Oh no way! Ok cool! I have the top lid but not the bottom. I'll order it up.. thanks DD!

 

I've been looking for a lower air box and kinda figured they would be inexpensive if someone was switching to cai, but they are hovering around 400. I would certainly understand if mine was smaller, but the more I think about it I'm having an tough time wrapping my head around why my slightly bigger airbox would cause a cel. Can anyone shed some light on this for me before I commit?

 

I don't understand why the airbox would cause any difference, unless the fluid dynamics changes that much and the MAF is affected that much. I have an Air Raid intake on my TRD blower and get that same code but only when it gets hot out (90+) otherwise don't get it.

 

I have the TRD SC and the TRD airbox and I've never seen that code. But I'm not sure why the airbox makes that much difference. Smarter minds than me figured this stuff out. I'm sure someone on here can shed some light because I'd like to understand as well.

 

I'm just hesitant to keep throwing money at it, waiting for a call from Toyota as well

 

I took measurements of the output tubes on the trd upper air box and my stock one, both are identical diameters. I ordered a new maf sensor, going to try that before investing in a trd lower housing. Will post results

 

I too have both the TRD SC and the intake setup and have never seen a code flash by...perhaps you can also just do the modified stock airbox dealio.. where you drill in another hole for air...?

 

You need to have the top airbox from the supercharger kit, it has a 4" diameter pipe that the MAF goes into.
There is no way the TRD supercharger kit top lid has the same pipe diameter as the stock one. The stock pipe is only 3" diameter.
Are you by chance using a TRD airbox lid that came with the TRD cold air intake kit and not the TRD airbox lid that came with the supercharger?
Does it have red lettering on top? If yes, it is the wrong top box. Measure the pipe diameter, it must be 4".
You do not need to replace the lower part of the airbox unless you have a 2014+ truck, and yours appears to be a 2010.

 

Correct TRD air box lid for supercharger:




Wrong TRD air box lid for supercharger:

 

You're the man. Extremely helpful!

 

Just wanted to follow up with results. The larger diameter upper airbox lid cleared up the 101 code, thank you again for that!

What to expect from a Bully Dog-

Almost nonexistent customer service.
Bought an older model on Ebay for $250, had an unsolvable write error. After many calls, frustration, and complaints they replaced it with a new GTX Gas.
When it showed up, the quality of the device defines "made in china". The technology is that of a Game Boy. The included instructions are not accurate and are cumbersome. What should have taken maybe 20 minutes was finally navigated in about 90, and I was honestly worried to use this thing on my truck.
After all of that, successfully installed the updated tune. My truck screams. Driving to work today pumped more adrenaline than my R3 has in some time.
Eager to visit a dyno shop, will post results!