cats.

[slowchevy]

can anyone tell me if i have a 2" or 2.5" exhaust system on this car? i would think it's 2.5"

i'm looking at zzp and other places. seeing normal vs. spun convertors.

advantages/disadvantage for both?

decisions........... need to make one within the week. mine is rattling around now super bad.

Click to read more...

 

[slowchevy]

an o2 emulator/straight pipe is also an option if they're reliable enough (the emulator) because the car is daily driven and goes to emissions and all that

 

[daturbosix]

do it the white way, and tune the post cat o2 out of the system. and staightpipe the kitty cat.

 

[Red Alert]

How old/miles on your car?

You have an 8 year/80K mile emissions warranty if you didn't already know.

 

[ThirdgenTa]

an o2 emulator/straight pipe is also an option if they're reliable enough (the emulator) because the car is daily driven and goes to emissions and all that

I have had no cat for 3 years and pass emissions.

 

[slowchevy]

How old/miles on your car?

You have an 8 year/80K mile emissions warranty if you didn't already know.

2003/89K miles

 

[1quick]

Get rid of it, have someone tune it and delete the code and never look back cats are gay

 

[slowchevy]

stupid question. does it hurt MPG?

 

[02BlueGT]

No effect on MPG, IIRC stock pipe should be 2.25 ID. I'm supprised you didn't drop it and run open TO style.


P.S. Your Sig is way to fucking big, please fix it.

 

[DanJ]

I run a magnaflow but have the rear O2 code deleted. Need to go to good fellas soon for the straight pipe special as my cat shield is rattling like a bitch also.

 

[SinisterSHO]

I run a magnaflow but have the rear O2 code deleted. Need to go to good fellas soon for the straight pipe special as my cat shield is rattling like a bitch also.

I think my cat I had valasquez put in last year is rattling.

 

[slowchevy]

No effect on MPG, IIRC stock pipe should be 2.25 ID. I'm supprised you didn't drop it and run open TO style.


P.S. Your Sig is way to fucking big, please fix it.

so 2.25 inner = 2.5" ?

 

[1quick]

The down pipe is dual wall 2.25 inner 2.5 outer the cat back portion is 2.5 single wall

 

[Mike K]

A 2001+ car won't take to the o2 simulator kindly. You'll still get the catalyst efficiency code. For that matter, you'll still get the code with just about anything except for the OBD-II compliant converters which are super expensive.

Removing it and setting the code to "do not report" is the best option.

 

[slowchevy]

another stupid question..

is the park avenue PCM the same pretty much? who do i go to to have it tuned?



i'm in pitch black darkness on all of this.

 

[daturbosix]

I run a magnaflow but have the rear O2 code deleted. Need to go to good fellas soon for the straight pipe special as my cat shield is rattling like a bitch also.

sounds like a great idea, however, due to current EPA restrictions, i cannot perform any kind of work that tampers with government control equipment.





































but... George Washington never told a lie!

 

[Mike K]

another stupid question..

is the park avenue PCM the same pretty much? who do i go to to have it tuned?



i'm in pitch black darkness on all of this.

Yeah, different gear ratios and stuff like that. We can make a PCM for you.

 

[slowchevy]

how local are you to gurnee? arlington heights, right?

 

[slowchevy]

other question. if they scan the car for emissions, what will they see if the rear cat is turned off?

 

[Burtonrider10022]

Where are the funny .gifs? It said cats in the thread title, wtf?

 

[syP]

other question. if they scan the car for emissions, what will they see if the rear cat is turned off?

No, they will just check to see if your engine light works, then hook it up to see if there are any pending codes. The guys that work there really dont care

 

[PANDA]

why don't u get a MAGNAFLOW HIGH FLOW CAT and list it as a mod?

 

[ThirdgenTa]

A 2001+ car won't take to the o2 simulator kindly. You'll still get the catalyst efficiency code. For that matter, you'll still get the code with just about anything except for the OBD-II compliant converters which are super expensive.

Removing it and setting the code to "do not report" is the best option.

Mine is a 2003 and didn't get a code when I had the sim put in.

 

[boostedguy05]

why don't u get a MAGNAFLOW HIGH FLOW CAT and list it as a mod?

That actually counts as a mod!!

 

[Euro]

x872 on the straight pipe and ditch the cat T/O style. I had the code tuned out and have a catless DP, NFWG.