Running lean with trd cai,catback,s/c installed

Hello all!

Like the title says i am running lean with trd cai,catback,s/c installed.

Getting a code po171 lean. mechanics having a tough time tracking down the cause.

Any tips or clues? Thank you much in advance. Not having my truck after mods installed is killing me!

Thanks again.

 

did they do the ecm reflash? hows fuel pressure? hows ur maf reading?

 

Are you running the second gen TRD CAI? If your are that is probably a problem.

 

They did indeed do a reflash and were checking the comp to make sure it took correctly.

I will in inquire about the fuel pressure and the maf reading. What precisely are we looking for regarding these?

Thanks!

 

Any remedy?

adjustments?

thanks!

 

well obviously have adequate fuel pressure. and make sure the maf isnt dirty and reading correct values

 

I honestly don't know. When I was buying my S/C I read a bunch of threads of the new TRD CAI throwing off AFR #'s so I ended up buying a 1st gen intake. Try taking off the CAI and see if you still get the code. You have to disconnect the battery and reconnected it first though.

 

@loft Sorry, I should have given more information. My taco is 2011, i would assume the maf sensor is clean, but i will check on that as well as the fuel pressure.

@Sproul

I would guess that the 1st generation worked for you.

Assuming that you have 2nd generation taco, was the install easy? any fitting mods you had to do?

thanks again folks!

 

The install for the S/C or the intake? The intake is straight forward. You should easily be able to change it out in less than an hour and that is being meticulous to details.

 

For the intake. I have the s/c already in. along with the new trd cai.

Thanks my man, i will look into it.

 

anyone else have something to add?

thanks in advance

 

UPDATED: all fixed!

The vacuum purge lines were backwards. and had a improper seal on the maf sensor.

Thanks all for your feedback.

 

BLAH! drove around for about 50 miles and the check engine light is on again.

Going to go get the code read.

 

Have you tried going back to stock intake?

 

@sproul

the number did even out after putting in oem intake.

guess i will have to see if they will refund the cai for a older model

sigh

 

The old TRD model are pretty rare to find. My advice is to buy an AFE SI CAI. It is the exact same as the old TRD one but not as fancy. Then you can also buy a Coupe custom cover for it. Here is mine

 

Nice looking case.

ITS WORKING NOW! with correct values. Stable so far. I wil be posting a vid on the mods made to make the 2nd gen work. Probably sometime next week. Thanks again for the help sproul