|
|
Post by AmunRoo on Aug 8, 2018 17:37:53 GMT -6
Anyone know of or can suggest a decently priced High Flow Cat that will allow me to pass emissions? Hmmm... how is that GXP cat?
|
|
RCA1186
Administrator 
Rob
Go Pack Go!
Posts: 4,837 
Staff Member
|
Post by RCA1186 on Aug 9, 2018 6:34:47 GMT -6
I had a magnaflow cat on my first Aurora with no problems. No check engine light usually means you pass emissions at least where I test in the Chicago area.
|
|
|
|
Post by lanceslambos on Aug 10, 2018 22:01:37 GMT -6
Any of them. There's nothing specifically for our cars unless you want to go with Corsa. Something to keep in mind which apparently no one on here but me does is consider the weight of every part you use and if the price is relative just go with the lightest option. I lost 30 pounds on the exhaust system alone and still have a cat and tips.
|
|
|
|
Post by AmunRoo on Aug 11, 2018 11:35:40 GMT -6
Rob, What year aurora did you place that CAT in? if it was in a 95, you wouldn't get a check engine as they weren't OBD2 cars. I had a 95 with no cat lol
|
|
|
|
Post by auroradriver98 on Aug 13, 2018 19:52:03 GMT -6
 My 98 Base got it's Cat punched shortly after i got HER years ago! NO related DTC codes or Danger lights, NOTHING! Actually I feel it runs better and slightly better gas mileage! |
|
tigger
Administrator
Posts: 2,844
Staff Member
|
Post by tigger on Aug 13, 2018 21:57:50 GMT -6
My 98 Base got it's Cat punched shortly after i got HER years ago! NO related DTC codes or Danger lights, NOTHING! Spacers on the downstream O2 sensor? |
|
RCA1186
Administrator
Rob
Go Pack Go!
Posts: 4,837
Staff Member
|
Post by RCA1186 on Aug 14, 2018 5:58:39 GMT -6
Rob, What year aurora did you place that CAT in? if it was in a 95, you wouldn't get a check engine as they weren't OBD2 cars. I had a 95 with no cat lol Was a '99. Chopped the cat, welded in a magnaflow, no codes. I also have heard of using spark plug non-foulers (spacers) to space the o2 sensor and fool it to avoid the CEL. |
|
|
|
Post by AmunRoo on Aug 14, 2018 16:24:40 GMT -6
Tell me more about this plug non foulers...
|
|
RCA1186
Administrator
Rob
Go Pack Go!
Posts: 4,837
Staff Member
|
Post by RCA1186 on Aug 15, 2018 6:17:02 GMT -6
Tell me more about this plug non foulers... Basically you get two of these and thread them into eachother and then the o2 sensor location post-cat. Then you thread the o2 sensor into that. It's about finding the right size(the one I linked is a generic example). What that does is draw the sensor away from the flow of the exhaust, altering the readings post cat. Thus with two different readings pre and post cat, the car thinks the cat is working. Not guaranteed to work or work forever but an old trick nonetheless. There are plenty of videos/tutorials online on how to do it. |
|
tigger
Administrator
Posts: 2,844
Staff Member
|
Post by tigger on Aug 15, 2018 23:16:44 GMT -6
Haha, be careful if you're planning to gut/straight-pipe your cat and run O2 spacers; You may fool the PCM in your car... You may even fool the sniffer at the testing station... But you'll never pass a visual inspection, and then you'll have some 'splainin' to do, lol! Depending on your state/local regulations, of course. FWIW, I had a home-made straight-piped cat on our old '96 GMC Jimmy for years. Instead of spacers, I used an O2 simulator (emulator?) that a friend had given me. Kept the light off, and since there's no emissions testing here, win for me!  |
|
