solution: Check engine light w/ aftermarket Headers

Originally Posted by pish180

no they will still be getting a reading just not a strong one. and the light will eventually come on. As most of us have stated in earlier pages. It varies on differ cars, but 1 or 2 tanks of gas is an average i'd say and then the CEL comes back on. -- with defoulers.

best suggestion is the software imo, then for emmisions just get some high flows installed, and run some emissions stuff in ur gas.

Where would I find the software? Or who offers it?

http://cgi.ebay.com/2-pcs-O2-OXYGEN-...3A1|240%3A1318

WIll this do any good?

If any of you guys decide to go after market Magnaflow Spun Cats...my check engine light is finally off!!! woo hoo!!!

Originally Posted by Autobot325i

If any of you guys decide to go after market Magnaflow Spun Cats...my check engine light is finally off!!! woo hoo!!!

So you are saying aftermarket headers + Magnaflow Spun Cats = no Cel.

Will it pass emissions/smog?

Originally Posted by pat

So you are saying aftermarket headers + Magnaflow Spun Cats = no Cel.

Will it pass emissions/smog?

Checked it after driving a few hundred miles and no codes...I would say that is a Pass for Emission.

as for SMog..

Originally Posted by Autobot325i

Checked it after driving a few hundred miles and no codes...I would say that is a Pass for Emission.

as for SMog..

I heard that certain race cats would not pass even though you didn't get a cel. I guess we won't know for sure until someone tests the Magnaflow Spun Cats

Originally Posted by pat

I heard that certain race cats would not pass even though you didn't get a cel. I guess we won't know for sure until someone tests the Magnaflow Spun Cats

They did specify that it covers all states BUTTT California...

Then I'm good to go! LOL I really need headers

does anyone no how to tell what gen technik headers u have (stupid question?) i recently got them about 2-3months ago never installed. and also does the Magnaflow Spun Cats go on the xi and what size?

This is the same thing I assume?

O2 Simulator Adapter

hey has anyone tried the Magnaflow Spun Cats or the O2 Simulator Adapter on a 2003 330xi? kinda wanna no if either works for them b4 i go ahead w/ defoulers

^^ I'd like to know too. I'm gonna go with defoulers probably... the spun cats will def work tho...

Originally Posted by Autobot325i

Checked it after driving a few hundred miles and no codes...I would say that is a Pass for Emission.

as for SMog..

hey dude....what exactly model number cats did you get, they have the offset ones and the straight ones.

Originally Posted by 450RRR

hey dude....what exactly model number cats did you get, they have the offset ones and the straight ones.

ordered this...not offset

http://www.planetmagnaflow.com/shop/...54954-673.html

i heard you need a 2.25", did the 2" work fine or would it be better for 2.25?

Originally Posted by 450RRR

i heard you need a 2.25", did the 2" work fine or would it be better for 2.25?

I have highline full cat they run a little under 2" so it was a perfect fit for me

awesome...thank you for your help

I still haven't bought my cats LOL - I spoke to my race shop and they suggested that I go ahead and put them with the install. I'm still torn whether I should go 2.25 or 2 for the cats....

Originally Posted by pat

I still haven't bought my cats LOL - I spoke to my race shop and they suggested that I go ahead and put them with the install. I'm still torn whether I should go 2.25 or 2 for the cats....

Error on the side of larger. That's the only advice I can give you. They'll flow better than the 2"ers. Now as for whether or not they'll heat up at the same rate and therefore work as well? I have no idea!

^^ good input, Thanks! Anyone have any experience running 2.25 cats?