Aftermarket header p1133/p1153

[styphon]

I received both of these error codes a year after changing out my exhaust. I had them cleared, but they reoccurred again after 200 miles.

I have kooks LT header, solo HFC cat, and solo exhaust. My o2 sensors are connected by "extenders" as they can't reach without them. I have never had a tune

So the problem is - now I can't pass inspection. Took to a shop, they told me to drive it around, which I did and after a few hundred miles it threw the same codes.

What do I do? Buy new O2 sensors? Buy a tuner?

[2SS2010]

you'll need to have it tuned!

[3rdgen3]

Originally Posted by 2SS2010

you'll need to have it tuned!

Yup...you need a tune bud.


Ive got the same issue, and so does EVERYONE who has long tubes on these cars without a tune.

The reason this happens is because the primary O2 sensors are further down the exhaust stream where its not as hot anymore, hence the switching slow response codes.

Ive heard of people welding up a bung in the #7 and #8 primary tube further up closer to the head to avoid tuning. But that aside, you need a tune.

This topic has been beat to death since the LS1 first came out and was super popular with people who put long tubes on LS1 fbodys and C5's back in the day. The general consensus/answer = TUNE.


Just as an FYI...those P01133 and P01153 dont necessarily trip the CEL on. When I get those DTC's they show up as a pending fault (yellow) and not an immediate fault (red) on my scanner.

[tekteq]

Originally Posted by styphon

I received both of these error codes a year after changing out my exhaust. I had them cleared, but they reoccurred again after 200 miles.

I have kooks LT header, solo HFC cat, and solo exhaust. My o2 sensors are connected by "extenders" as they can't reach without them. I have never had a tune

So the problem is - now I can't pass inspection. Took to a shop, they told me to drive it around, which I did and after a few hundred miles it threw the same codes.

What do I do? Buy new O2 sensors? Buy a tuner?

Tune is the way to go, you don't want your car running too rich, bad for the engine mate!

[2SS2010]

I have had longtubes on my car for 3 weeks and haven't gotten a check engine light yet.

[axis]

You will.

[The_Blur]

I got those, too. They'll be gone with my permanent tune.

[styphon]

Originally Posted by 3rdgen3

Yup...you need a tune bud.


Ive got the same issue, and so does EVERYONE who has long tubes on these cars without a tune.

The reason this happens is because the primary O2 sensors are further down the exhaust stream where its not as hot anymore, hence the switching slow response codes.

Ive heard of people welding up a bung in the #7 and #8 primary tube further up closer to the head to avoid tuning. But that aside, you need a tune.

This topic has been beat to death since the LS1 first came out and was super popular with people who put long tubes on LS1 fbodys and C5's back in the day. The general consensus/answer = TUNE.


Just as an FYI...those P01133 and P01153 dont necessarily trip the CEL on. When I get those DTC's they show up as a pending fault (yellow) and not an immediate fault (red) on my scanner.

The P01153 has triggered the CEL this time. This is the third or fourth time it has happened - problem is - last 3 times are during my inspection. I have a week to fix it before my inspection runs out.

I have also read that sometimes a tune will not stop the P1133 and P1153 errors and they must be disabled in the tuning program? I would go crazy if I went to a tuner pay a couple hundred then fail inspection *again*

[The_Blur]

If you clear it, it shouldn't come back right away. You might consider leaving the CEL until right before the inspection and clearing it down the street from the inspection facility.

[GONIF]

Originally Posted by The_Blur

If you clear it, it shouldn't come back right away. You might consider leaving the CEL until right before the inspection and clearing it down the street from the inspection facility.

They plug into the OBDII port in AZ, and you will still have readiness codes set but no CEL and fail .

[ST1LE]

You have been running headers w/o a tune for a year? EEK

[styphon]

Originally Posted by GONIF

They plug into the OBDII port in AZ, and you will still have readiness codes set but no CEL and fail .

If i clear the CEL before the inspection I will fail as all but one system must have readiness codes. If the O2 sensors attempt to check before all others complete - i will throw a CEL

So I think I have two ways around this...

1) buy a tuner device, get a map - and then hope it works, if not then "adjust" the p1155 and p1153 codes
2) Pay a tuner w/ dyno (about 50 minutes away) almost the same price to tune the car. He says it "may take a couple tries" - and it "is illegal to adjust the p1155/1553 codes"

[3rdgen3]

Originally Posted by styphon

If i clear the CEL before the inspection I will fail as all but one system must have readiness codes. If the O2 sensors attempt to check before all others complete - i will throw a CEL

So I think I have two ways around this...

1) buy a tuner device, get a map - and then hope it works, if not then "adjust" the p1155 and p1153 codes
2) Pay a tuner w/ dyno (about 50 minutes away) almost the same price to tune the car. He says it "may take a couple tries" - and it "is illegal to adjust the p1155/1553 codes"

Such is life.

-Street Racing is illegal
-Smoking indoors is illegal
-Doing burnouts is illegal
-Speeding is illegal

What isnt illegal? Where do you stop with the morality of it all?

The bottom line is, if you want to keep LT's and pass inspection, you'll need a tune.

Just as an FYI, because THAT tuner told you "tuning out 1133 and 1153 is illegal" would ensure i never let that guy EVER tune my car. This is a COMMON issue with having longtubes/modified exhaust/cats/etc.

With a proper tune(r), they will FORCE emissions readiness in the tune. HP Tuners, EFI Live, etc all have the ability to do this and tell the ECU to not trip a CEL/Fault for P01133, P01153, P0420 & P0421. Any good tuner should know this.

They wouldnt put the feature in the tuning software if it wasnt required when tuning for certain/specific mods, like longtubes.

[matt55]

Originally Posted by ST1LE

You have been running headers w/o a tune for a year? EEK

A tune made VERY little my intake/header car(5-10hp) . Ran it for 2 years no tune, if it wasn't for the darn cel I would left it alone .