Piggie Pipes or Cat Back ... performance for the dollar?

[mrpeterparker]

Between the VAST piggie pipes and say a decent cat back exhaust system.. which is money better spent? on overall performance...

also is there an audio/video clip of a stock s4(or stg 1) with just the piggie pipes? wonder how much different it sounds with just the piggies

[YBLEGL]

Well I have done both and I would rather do the Piggies then the exhaust, they are well worthe it and they are cheaper then any exhaust for the most part. They make the turbos alot louder and easier to here the whistle they also let the boost come on a little earlier. I would do both or just piggies if I didnt have the cash for both

[McKennaS4]

not only do you increase flow, thus increasing power, a catback also brings to the table weight reduction, a drop dead sexy exhaust note, and some pretty tips =) i say 100% go with the catback first! piggies sound pretty close to stock on a stock exhaust and although they increase flow fcoming from the manifolds, your stock catback will decrease the flow thus netting less increase in power compared to a ne catback exhaust. gl bro!

[Rajan147]

i got stock exhaust and piggies, big difference and i've only got k03's. Its going to sound even better with a catback. I would say it was a mod def worth doing, plus it gives me time to think about which cat back i want.

Food for thought.

1. I get into boost quicker
2. Backpressure relief
3. A little more throaty/aggressive note
4. Hear the turbos more (turbo spool)
5. Not extremely loud and obnoxious

[Bimmer2Audi]

I went through the same thing, and decided to go for Catback first. Honestly if you can gut the DPs yourself, do both at the same time...

[flips4]

piggies def first

[nocturnals4]

Performance for the dollar?? Piggies are FREE!! Thats the whole point. If you have any mechanical abilities, just do the piggies yourself. Took me 3/4 of a saturday to save myself the $300+. Then you dont have a decision to make about which to buy first.

[Bimmer2Audi]

Performance for the dollar?? Piggies are FREE!! Thats the whole point. If you have any mechanical abilities, just do the piggies yourself. Took me 3/4 of a saturday to save myself the $300+. Then you dont have a decision to make about which to buy first.

Mos def. Its just turning bolts and a couple bucks for gaskets and C02 Elimintaters.

[mholme]

Save the money for the cat-back and do piggies+ cat-back in the same day/weekend. I just picked up a true dual cat back last week to go with my piggies. It sounds a lot better and you can really hear the turbos spooling now, even over the exhaust note.

[The_Jerbel]

You just have to consider which will yield you more exhaust flow if you are concerned about which will give you greater power gains and extend turbo life. They are both contained within the same system, so whichever restricts exhaust flow less, will be more worth while. Having said that, I agree with the above, do the piggies in your garage in an afternoon and buy the cat back.

[Das General]

Get downpipes and hack off the rest of the exhaust, 2 for 1

[Jsmooth65]

Am I missing something? I thought you had to weld on o2 bungs. Not everyone can weld.

[RuS4ty]

^that is one option if you decided to relocate the O2s, but a lot of people just use eliminators.

I did piggies first and cat-back second. I honestly didnt notice that much difference with just the piggies, besides heading the turbos better and a little quicker spool time. But after installing the cat-back the difference is increase is awesome. The weight you save too makes a big difference.

[Jsmooth65]

^that is one option if you decided to relocate the O2s, but a lot of people just use eliminators.

I did piggies first and cat-back second. I honestly didnt notice that much difference with just the piggies, besides heading the turbos better and a little quicker spool time. But after installing the cat-back the difference is increase is awesome. The weight you save too makes a big difference.

OK. relocate o2 sensors to maintain emissions passability in states where they test at the pipe, or celiminators if they don't. Right?

[GyzmoS4]

I did piggies b4 chip, and i definitely felt a difference. Still don't have a cat-back yet, but i plan on getting electric cutouts first and eventually installing cat-back. Here's what it sounds like with chip and piggies: http://youtube.com/watch?v=aEJGs4-vQ_Q

[mrpeterparker]

nice thanks man...

[The_Jerbel]

You either need to get a chip with the rear O2's coded right out of the software, no longer in existence. OR if not, you need to trick the ECU into thinking that the rear O2's are reading correctly. This is done by using CELiminators which put the O2's sensor more out of the way of the exhaust stream so they pick up less exhaust and therefore have lower readings.

[Rajan147]

you can also wire in a rectifier diode and that should do the trick, cheap and easy solution

[2kblacks4]

car only has a chip and piggies cats are still on. -sorry for the none edited version

http://s149.photobucket.com/albums/s...iggievideo.flv

[BITRBO]

I went chip, then catback although my intention was to do it in the opposite order. It felt a little bit better with the catback, but the sound benefits were DEFINITELY the highlight... But I could only take a week of that "sand-blaster" sound at WOT (on the 93 oct. program) until I had to install a catback.

In hindsight, it would've been better performance-wise to do DP's/piggies first but I wanted to hear that exquisite exhaust note first

[Aggv]

I bought a catback first because it was on sale, but i plan on doing dp's at the same time that i install the catback