Tacoma Stillen Intake Woes: Hoping the Exhaust Fix Wokrs

TrdMarkey

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Jun 12, 2025
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Tacoma
4th Gen Tacoma
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Two weeks back, I added a Stillen intake to my car, and I can't lie, I didn't have the best of experiences. The check engine light kept turning on with lots of error codes, such as the ones shared in the pictures below.

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I had to check each link twice, making sure all was set up right, but no luck. Don't think I'd advise anyone to get this intake if you're thinking about getting one. Not to be rude, but it was a lot of trouble.

On the bright side, though, a few days after putting it in and I noticed the troubles, I called Stillen's help team. I must say, they were super kind and fast to answer.

They said sorry for the trouble and wanted to fix it by giving me their Offroad cat-back exhaust in its place. They will send it next week, so I hope it fixes stuff and makes up for my troubles.
.
 
TRDMarkey, I had the exact same experience with the Stillen CAI. Stillen told me it was most likely some oil from the Filter made its way onto the MAF Sensor causing the trouble. I confirmed this was not the case by reinstalling my stock AI, problem immediately went away. I recently had a tuner install the OTT Tune and at the same time recalibrated the MAF Sensor bandwidth allowing for the increased air flow of the Stillen CAI. The tuner told me the Stillen CAI flows way more than the other units and is equivalent to the TRD Pro CAI, both of which require the recalibration and tune to work correctly. Mine runs perfectly now and makes lovely noises to boot.

Hope this helps...
 

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