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Discussion Starter · #1 ·
I installed this last last weekend. Check engine light came on. Checked code it was for o2 sensors. I figured that problem out it was a tiny exhaust leak by turbo. Drove it prob 50 miles check engine light came back on. This time i read the code and it said this. Catalyst system efficency below threshold b1 b2. There was 2 codes thrown same on both. Not sure what the problem is. I was thinking i might need to get a custom tune because i installed the downpipe. Thoughts??

2012 F150 EcoBoost Lariat
 

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you really should get a custom tune for downpipes, its reccomended by many.
 

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Discussion Starter · #5 ·
It has high flow cats. And i think I'm going to get custom tunes but didn't think i would need them because the downpipe was suppose to be good to go bolt on. And i was talking to my buddy last night and he said i need the o2 cheaters too, do you think i just need the cheaters four the back sensors or all 4?? Thanks for the responds!

2012 F150 EcoBoost Lariat
 

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Well, if you get a custom tune, that should fix it without you having to get new sensors. The tune will tell the computer that the o2s are reading normal
 

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It has high flow cats. And i think I'm going to get custom tunes but didn't think i would need them because the downpipe was suppose to be good to go bolt on. And i was talking to my buddy last night and he said i need the o2 cheaters too, do you think i just need the cheaters four the back sensors or all 4?? Thanks for the responds!

2012 F150 EcoBoost Lariat

A tune is definitely recommended that should take care of your issue.
 

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Discussion Starter · #8 ·
I emailed the company i bought my tuner from and asked them if they could send me some updated tunes. But for now do you think i should just put those spacers in??

2012 F150 EcoBoost Lariat
 

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Getting the tune is really the best way to get the parts to work with the parts and use them efficiently. It will also help your truck run a lot better.
 

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By chance are you running any catback? If so is it significantly louder or is it around OEM?? Please do help as I am looking into this set up but have to find out which catback offers close to OEM levels of db.
 

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Discussion Starter · #11 ·
By chance are you running any catback? If so is it significantly louder or is it around OEM?? Please do help as I am looking into this set up but have to find out which catback offers close to OEM levels of db.
Yes I'm running a heartthrob 4 inch catback with muffler delete (straight pipe) with 5 inch tip.. Yea you could say its louder than stock lol i have to still get some good sound clips

2012 F150 EcoBoost Lariat
 
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