engine code

[bryan213]

ok i give up on magnaflow ima kill my car just about to just give up and sell it... i have a magnaflow catt on my car and keep getting engine light for catt efficenty.... top and lower 02s are brand new idk what eles it could be im having no other codes at all..... is thare a way to trick the computer or could i get a computer for my car that will relize that it has a high flow catt.. its a 03 v6 3.4l any help will be welcomed...

[Redog]

The downstream O2 will not read correctly on anything other than a factory GM cat.

Get an O2 simulator for the downstream, or a PCM reprogram to delete it, that's the only way to get rid of the P0420 you're getting

PFYC.com used to sell one, I don't know who does anymore ;) Actually the Government and the EPA shut that part of Casper down. Maybe the "resistor" trick will work

[Redog]

Here you go!!

http://www.afterthoughtsauto.com/o2sim.html

We have either 1,3,or 4 ;)

[bryan213]

if i get a tuned pcm will i fail emmisions?

[bryan213]

has anyone had experience with a tuned pcm ???

[jackal2000]

the only way you will fail emissions is if the cat is actually bad and that depends on the type of emissions check they do, tail pipe sniffer or OBDII.

[[ion] C2]

Borrow HPTuners and disable that code.. it's not an important code at all...

[Redog]

if i get a tuned pcm will i fail emmisions?

Nope, had a tuned PCM for years now and my car passes, and that's here. SE PA emissions are only 2nd to Cali emissions ;)

[Alerosaint]

C2;480478']Borrow HPTuners and disable that code.. it's not an important code at all...

I need to disable that code myself....do you know off hand how to disable it???

[[ion] C2]

Open the VCM Editor. Go to Engine Diag-->DTCs.

Go to P0420, uncheck SES Enable. Click on the Error Mode and change it to 3 - No Error Reported.

[Alerosaint]

ahhhhh...thank ya

[Psyfox]

the only way you will fail emissions is if the cat is actually bad and that depends on the type of emissions check they do, tail pipe sniffer or OBDII.

Lucky...not in Missouri. If you replace the cat period you fail emissions.

[[ion] C2]

If you replace the cat when it fails it's legal.... and for an OBD-II compliant catalyst.

[bryan213]

wat company sells pcms for aleros that i should trust

[[ion] C2]

HPTuners and tune it for your vehicle specifically. No mail order tune will do a good job on your specific vehicle.

[bryan213]

yea im thinking about just buying the program and everything but 500 bucks ouch lol now will i be able to do the electric shift kit just like the pcms that you can buy

[[ion] C2]

You do a lot better than any "shift kit" when you edit the computer with HPtuners.

[Psyfox]

C2;480659']If you replace the cat when it fails it's legal.... and for an OBD-II compliant catalyst.

So then my question to you is how do you induce failure? :P ... I'd love a high flow cat. ...damn legalities.

[[ion] C2]

Dude just replace your cat. High flow ones are typically illegal anyway because they don't convert as well as regular ones. As long as the cat is OBD-II compliant and whatever, it's legal. In California it has to be CARB exempt.

[heineck]

no shit... $300 for sumthin thats not even high flow. u can get a high flow for half that price damn CARB

[[ion] C2]

My OBD-II compliant Catco converter was $60 from AutoZone. Now I have piping where the cat once was, which is even better.

[AbHeLlRaZoR]

yea im thinking about just buying the program and everything but 500 bucks ouch lol now will i be able to do the electric shift kit just like the pcms that you can buy

spend the money man, I've been cramming as much info as I can find on the program and it's worth it you can do so many things, some you wouldn't even think about. I don't have HP tuners but it's next on my list.

[heineck]

C2;480843']My OBD-II compliant Catco converter was $60 from AutoZone. Now I have piping where the cat once was, which is even better.

ur running catless now?

[[ion] C2]

yeah why not, it's a glowing cork, turbo's like the maximum velocity and flow in the exhaust

car is still insanely quiet since i got the wastegate dump hooked up to the exhaust, you would not believe how silent it is. seriously. all there is is turbo spool sound now.

[heineck]

vids vids vids, i cant wait, but dont u need an 02 sim or will HPT take car of that?

[[ion] C2]

I have all cat related codes disabled.

I'll be taking vids very soon. A few little things to fix then it's off to the track and flyby videos. But trust me, after the initial spool, there isn't much to hear. A very faint whistle at WOT... everything is so quiet. I've shocked everyone who's gone for a ride so far. You hear barely anything yet the car moves out. I really kinda like it this way. At normal driving around you hear the turbo a ton, but once you put the pedal down, the car gets quieter and it's like a silent killer lol.

[heineck]

nice:coolio: