jamusa

Has anyone experience any emission failure due to cats romoval,due to installation of k2+ installation?
Took my car in for inspection today....car would not pass inspection due to missing primary cats.

SleeperX

Was your CEL on?

jamusa

what is a CEL?

BenzoManNY

Same thing happened on my Porsche 2 weeks ago, i paid the guy $150 he passed it so thats what it may take to keep the mods and get that silly sticker for the window

Fast55

Doesn't matter in Ca. Doesn't matter if it's putting out 100% O2, you fail on the visual inspection without them ever even sniffing the exhaust. That's why you don't hack a car in Ca. Every 2 years, this is going to bite you in the butt.

SleeperX

check engine light

dsc

No testing in Knoxville. What are you going to do now?

mkeeton

Bought a car with Kleemann K2 and it would only get about 100 miles before the CEL came on and thus would not pass emissions. After many gyrations ended up going to Kleemann in Colorado Springs and they were fantastic. Welded in some race cats in place of the missing primary cats and relocated the post cat oxygen sensors behind the new race cats. No CEL issues and now no trouble getting through inspection and emissions.

They sell the race cats for $200 or so per side and then installation. If you go that route have your local installer talk to Brandon and they will explain exactly what needs to be done. A decent exhaust shop should be able to do the job.

Can't say enough good things about Kleemann aftermarket support. Brandon, Cory and Jason were great. They did everything to help me over the phone to sort out the problem but it turned out the wiring harnesses had been mixed up side to side and I could never get things working properly. Did pre-cat dyno and post-cat dyno and the race cats caused no loss of power. Good luck. Mark.

phatmitzu

The purpose of doing that is to have all for O2s reading the same air flow?

ProjectC55

if I were you i would be smart and not post that!!! especially living in NY.

ProjectC55

Well SleeperX ,here is your solution!

get the Metal Cat by the Co. named "Metal cats" They are 200cell cats and you can replace the 400cell stck cat's with these.

Jrocket

Not sure what state your in,but hopefully they just did a visual and stopped at that.If they took notes and entered them into the computer regarding your car,thats not good.

You can either put the stock exhaust back on.

Or try your luck by adding some aftermarket cats and then hit another inspection station.

Hopefully they dont start looking around for a (CARB EO) number on the headers as well.

enzom

When I replaced the cats on my Z06, part of the computer tuning (popularly referred to as LS1-Edit) took care of the O2 sensors by fooling the computer into believing that everything was stock and operational. Doesn't the ECU tuning by Kleeman as part of the K2 package also deal with the O2 sensors?

Jrocket

Yes,K2 program can eliminate the secondary o2 sensors.From what I understand.

Ted Baldwin

...........it does. No it did, until the secondary air inection pump recall by Mercedes. During the recall the ECU was reflashed by Mercedes and the CEL came back on and became much more difficult to get rid of

Ted

mkeeton

My understanding from Brandon at Kleemann is that they can program the CEL to stay off by telling the ECU to ignore the readings from the rear O2 sensors. But it then leaves a readiness code unset that depending on which state you are in may cause you to fail emissions. In fact the ECU tune that gave me the best horsepower had that exact programming and I am waiting for them to get a copy of that software with the O2 sensors turned on so that I don't have to mess with readiness code issues.

You can try installing spacers that pull the O2 sensors out of the exhaust flow and if done just right might allow you to pass without installing the race cats. In the end the race cats solution worked great. No hp loss and no need to try and fudge the inspection or the CEL.

Cheers, Mark.

jamusa

I passed inspection last year with the primary cats off, but this year it failed.I was told to relocate the secondary o2 sensors behind the 2nd cats , update the ecu and i should be ok.I will try this first to see what happens.
If not i guess i will have to go with some high flow cats( 2oo cells).Hopefully i will not loose any hp.

mkeeton

My O2 sensors had been relocated behind the secondary cats and had the spacers installed as well. That still didn't give me consistent readings. Now the wiring harness on my car had been switched from side to side and it may have been that mix up that made it difficult to get consistent readings.

If you do relocated the rear O2 sensors, give Brandon a call and they can send you the spacers that they use when doing the install. Also, if you move them back try and make sure that the tech gets the O2 sensor bung square to the pipe and as close to horizontal as possible. On my car the bung was angled down and the O2 sensor was the lowest thing to the ground under the car... probably just a matter of time before I hit something on the road and damaged one.

Finally, make sure they do one side at a time (so as to not mix up the harness) and when you lengthen the wiring harness do make sure that there is no mix up of the wiring. There are 2 white wires and they are NOT the same. Cheers, Mark.

jamusa

Thanks for the advise......i heard one cut the wireing and hook it up wrong,and had a lot of problems,so i will be sure to do them one at a time.

jcjmw

I have the K2 in my car and no problems of anykind, easily passed emissions.

jamusa

Mine pass also last year july,but due to stricker emmision laws,DMV raised the bar in a few states,thus cars that pass inspection last year may experience some difficulties in passing,if
your state is one of those.then you may have some problem.

SleeperX

Project C55,
Thanks. Not sure if I am going to remove my primary cats. My tech is telling me that it will void the warranty on my exhaust.. Not sure if I want to do that for the reduction in restriction that going from 400 cell to 200 cell will give me..

Jrocket

He mentioned the exhasut but didnt say anything about the pulley or other items your motor has?

ProjectC55

Yea that's doe not make sense that replacing the cats would void the exh and the above has no effect on the warranty. Good question.

ProjectC55

And Frank you exh weighs TONS more than an aftermarket exh so why would you want to keep it if you can upgrade the whole thing with a superior Stainless Steel setup(pipes,cats,reso's) like Joon ,PTE(2005 CLK55),and I did?

Remember he (Joon) still takes his car to the dealer.