It is strictly there to check the emissions system, specifically the catalytic converter. If it doesn't read leaner than the primary O2 or doesn't read at all, you will set some emission codes, but they can be disabled via HPT and have no effect on performance.

 

Italianjoe is right on the money. Thanks Joe.

I just spoke to Kelby and confirmed what Joe posted.

Just to clarify:

the front O2 sensor is what the PCM (computer) uses to adjust the air/fuel ratio. The rear sensor is to tell the PCM the cat converter is present and functioning properly. For those who deleted their cat converter, we do NOT provide the rear O2 bung as it is pointless. You will need to either install O2 simulators or have the rear O2 sensor turned off in the PCM with custom tuning.

Also,
I am re-posting this from page 33, 35, etc...

For everyone else who ordered their down-pipe with the slip fit factory flange, I wasn't sure what your plans were so we left them loose. They are a tight fit and we would simply hold them together with a small weld which could be ground off later. What I'm getting at is, if you have your header and down-pipes installed at a shop, do NOT let them do a full weld at the slip. Otherwise you will have to cut the down-pipe later when you up-grade to a 3" exhaust. Instead, have them do a small spot weld on one or two sides. Or you could use a slip style clamp. (Clamp was not included).

We shipped another 5 or 6 orders today and will continue to build and ship your orders daily.

Thanks again everyone.

 

Yay! Do I get a cookie??? I really could go for a big chocolate chip cookie right about now...

Seriously though I've run a 3" catless DP for about 2 years and never had any issue with the rear O2, mine is plugged in, but it was throwing p0420 codes. I used HPT to turn off the CEL for that code, basically the car knows that its not right but it won't turn on the light because I told it not to. Has no other impact on the car.

 

good to know!

 

Awesome! Not much longer now...

I assume you email us a tracking/confirmation number when our order ships?

 

Dan you said you have 1 5/8 headers that you overbuilt and were trying to sell. What is the difference here? I am lost with the header combos so what is the price of a header/dp with cat now?

 

We create the shipping label and Fed Ex sents an automatic ship notification.


The headers we have available due to over-building or cancellations:

Four 1 3/4" 4 into 1, raw, no velocity cone.
One 1 3/4" 4 into 1 with Velocity cone and Chromex Ceramic coating.
Three 1 5/8" 4 into 1, raw, no velocity cone.

All at the best GP price from page 1.
Thanks.

 

OK I know you do great work I just do not know if I nee the velocity cone or not or which size I need. Also could a dp be made with cat if I bought one? If not will these headers hook up to stock dp?

 

That makes sense for the US orders, but you quoted me shipping by USPS to Canada so that's why I was asking. Some US vendors don't send Canadian customers the USPS confirmation number because they don't realize it is also the tracking number. I've had the same situation with many US vendors and just want to double check I'll get the confirmation number. Thanks.

 

Just like every one else, you can order EXACTLY what you want. Ready when you are.
(425)251-0329.

Thanks again.

Your order was not ready today. It will ship tomorrow. Using priority mail there is no tracking number. The only time we get any number at all is when we insure the package.

Beth should email whatever numbers we get.

Thanks.

 

Thanks Beth for the phone call! I can't say how great Clear Image Auto is with customer service. You guys are awesome and I can't wait to get my header/dp in the next week or so!!!

 

Thanks Dan. I know it wasn't ready and I wasn't pressing you for an order update at all. I had also received a call from Beth today and I really appreciate it. I just wanted to confirm shipping method to Canada and forgot to ask her so I apologize. All I need is the confirmation number USPS provides when the shipment is processed. Thanks again.

 

mine is on the way

 

Got mine and installed today its a nice piece of work. Can't really tell much of a difference in sound or power but im sure the dyno will!!! I know I prolly wouldn't notice much since we are just freeing up the air flow. Can't wait to do my full 3 in exhaust I just dunno what muffler to go with! Thanks again clear image

 

I'm guessin' you probably need to tune your car for the new header/exaust

 

I made a thread about tunning for header and they said there isn't anything you can do nor would it be worth the money to pay someone to tune for a header.

 

Header and dp combo came in tonight might have a sound clip later.

 

if running no cat, do i need to retune my car?? or do i just get sum1 to delete all the codes??

 

get someone to delete the codes.

Dan what is the address so i can send you the warranty form back.

 

Glad to hear you guys have started receiving your packages.

If you have deleted your converter you will need to either install an O2 simulator or have the rear O2 sensor programmed off in the PCM. if you are going to pay to have it turned off, you might as well get the rest of the tuning done at the same time for even more power, etc.

Tuning specifically for a header isn't required. But here's some interesting info about our header design:

Your 2.2L header is a really nice piece of work. I’ve been working with Jason S to remote tune his car using the GT Tuner’s new data logging feature. Your header increased airflow by 11% at 5500 RPM (proven), and dramatically reduced the engine’s tendency to spark knock. I’d like to see some numbers but I bet your header gets even bigger gains on the 2.2L Cobalt then the Solstice.

Anyway, just thought I’d let you know.

- Vince Geglia
Trifecta Performance, Inc.

The header he is referring to is the 1 5/8" primary size. We were pretty happy to hear this.


Address should be on the shipping label. If not:

Clear Image Automotive
18817 East Valley Hwy.
Suite B
Kent, WA 98032

Up-date on shipping:
the remainder of the 1 3/4" header/DP combo's ship today.
We are waiting for a car to do one last test fitting of the TRI-Y header to confirm the O2 bung location. Of those, two are raw steel and will ship immediately. One is getting ceramic coated and will go for coating following final test fit.

Thanks again everyone.

 

JOe , when can you delete the rear o2 codes for me?

 

Up-date on shipping:
the remainder of the 1 3/4" header/DP combo's ship today.
We are waiting for a car to do one last test fitting of the TRI-Y header to confirm the O2 bung location. Of those, two are raw steel and will ship immediately. One is getting ceramic coated and will go for coating following final test fit.


Am I going to have to drag the test fitter down there?

 

so as soon as i put this on, i can start just speedin around n testing it out? w/ out removing the codes.

 

^^^^ Yea, to the best of my knowledge, the cat codes won't impact driveability. However they will cause a CEL which can be removed with HP Tuners.

I am taking my car for a full tune on Sat! I will be getting a street tune from one of the good tuners around my area with my new LC-1 wideband. Hopefully the car will run much better. I am truly sick of the Intense Racing tune I currently have!

 

i hear intense tunes are very powerful but people have blown pistons and other stuff from it.