Thinking about adding more to my car...

[Vintendo]

Been looking online and started to think about adding High Flow Cats to my 2012 2SS A6 convertible..

So far i have done the Borla cat back ATAK and I love it !!

was thinking about headers but i don't want to have to reprogram anything putting in risk my warranty that i paid a ton of money for hah

So i i guess what I'm asking is this..

What is the big difference between Lets say Shorty Headers Vs whats on there stock right now ?

i am under the assumption that going with Long tube headers would mean i would need to tune the car ?

but I started to think... if the shorty headers are more so for sound not much Gain... (Which I don't mind honestly) then would it make any Sense to buy The shorty headers and the High Flow Cats ? or would it be ok to just add the HFC to the stock Mainfold thats on there right now?

I mean how much of a difference could it really make right ?

I like the sound of the HFC cats on the Borla Cat back ATAK system..

Would i need to get it tuned or clear any codes with just the HFC ?

[ColdfuzionTN]

Don't do it ! It never ends. I started with an air freshener now I'm looking for 1000hp half shafts to just go to wally world safely.

[Avenging Orange]

If you like the current sound so much. ...why change?

[Vintendo]

Just was thinking the added sound from the hfc and maybe some added hp?


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[SSEssence]

Yes, it will get a whole lot louder and add some power, but you will need some form of O2 extenders to not throw a code. I'm running the JBA HFCs and Big Daddie's Garage 90 degree O2 extenders without any code issues.

[Vintendo]

Will the car need a tune after this? I don't want to void my warranty.

Also would just going with the hfc and leaving the stock manifold be that bad?


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[qcman]

I'm just curious if your car is only a 2012 it can't have much warranty if any left on it unless you bought an extended one for it? I would think adding hi flow cats would void a warranty too as it effects the emissions on the car but I'm not sure on that.

A tune on that A6 would really wake that car up that I know from experience....

[Vintendo]

Yes I did purchase an extended warranty


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[qcman]

Originally Posted by Vintendo

Yes I did purchase an extended warranty


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Gotcha... Well in that case it would be wise to protect that. Hopefully someone who knows more than me about the impact of hi flow cats can chime in as it relates to affecting your warranty.

Do you not notice the AFM kicking in more with the new exhaust? I've heard that is one issue on the autos when the exhaust is swapped.

[Vintendo]

Yeah I def do..it's annoying lol. But not enough to have me spending over 400 to eliminate it with a range device haha


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[qcman]

Originally Posted by Vintendo

Yeah I def do..it's annoying lol. But not enough to have me spending over 400 to eliminate it with a range device haha


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Look in the for sale section here I've seen them sold for $100 or so now and again used as people move on to tunes or other mods etc. I have one sitting in my drawer downstairs still from 2 years ago I just never bothered trying to sell it lol.

I just hated the AFM kicking in even with stock exhaust.

[Avenging Orange]

The stock manifolds flow pretty well. I'd stick with what I had and lean more towards deleating the AFM. Then, later down the line....after warranty...look into long tubes, hiflo cats and a tune. Because, regardless what you say now, you're gonna want to.

[rontammy0]

You have a 2012 so i think the Solo hi flo bolt right up and dont cause a cel or need tuned. I have a 2011 and never had a cel for the year or more i had them before tuned.

[jc615]

Don't waste money on shorties