Which Downpipes?

[desty]

Which Down Pipes to choose from?

I see prices from 579$ to 800$ and as far as i know , they are all 3inch and bolt on...

What is the main difference, and which one do you guys recommend?

[RnmEvo9]

The difference is the names, they all do the same thing though by allowing exhaust gases to exit quicker by going catless.

[wildcat767676]

I have agency power downpipes and love them!

[1-2MANY]

AR design! or raceland if you're on a budget.

[evilstib]

Anyone see good performance gains from aftermarket catted downpipes?

I replaced my midpipes with CP-e catless and the car is backfiring now...I don't think I want it any louder...hah!

[Mak135i]

16 months ago I did a dyno run with JB+ set to 100% (about 11 psi) with stock DP. Then after installing the AR design catted DP, we did another dyno run. Same day. Pretty much same temperature. The difference was over 20 hp.

Now, I have the JB4 and regularly hit 13-14 psi during WOT on the auto tune map. I would guess the gain versus a stock DP is probably even higher than 20 hp.

[Kamal]

Originally Posted by RnmEvo9

The difference is the names, they all do the same thing though by allowing exhaust gases to exit quicker by going catless.

Quality of the fabrication and, more importantly, FITMENT is a huge issue and difference between manufacturers. I can guarantee you that you'll be happy with the AR design pipes, not sure about everything else.

[RnmEvo9]

Originally Posted by Kamal

Quality of the fabrication and, more importantly, FITMENT is a huge issue and difference between manufacturers. I can guarantee you that you'll be happy with the AR design pipes, not sure about everything else.

I'm very happy with my $200 Raceland downpipes.

[Kamal]

Originally Posted by RnmEvo9

I'm very happy with my $200 Raceland downpipes.

I paid only $140 for my AR design pipes, brand new and direct from AR (won a contest)... so I can't complain!

[BrokenVert]

SuperSprint!


$4000 pipes FTW!!!!

[evilstib]

Originally Posted by BrokenVert

SuperSprint!


$4000 pipes FTW!!!!

Plz explain...

[evoq007]

Originally Posted by BrokenVert

SuperSprint!


$4000 pipes FTW!!!!

[ModBargains.com]

The AR Design downpipes are definitely one of the more popular systems and for good reason. It was the first 3" system that was introduced to the community and the quality and fitment of these hand crafted pieces speak for itself. The AR Downpipes will give your N54 an exotic and aggressive exhaust note as well as a significant boost in horsepower. These downpipes also virtually eliminate turbo lag, and will make your car's engine even more responsive. We do keep both the AR design Catted and Catless setups in-stock here as well without the typical 4 week lead time. Feel free to drop me a PM if you guys have any further questions!

[evilstib]

Originally Posted by evilstib

Anyone see good performance gains from aftermarket catted downpipes?

Anyone? Catted downpipes....good gains...thoughts?

[evilstib]

Originally Posted by **********s.com

The AR Design downpipes are definitely one of the more popular systems and for good reason. It was the first 3" system that was introduced to the community and the quality and fitment of these hand crafted pieces speak for itself. The AR Downpipes will give your N54 an exotic and aggressive exhaust note as well as a significant boost in horsepower. These downpipes also virtually eliminate turbo lag, and will make your car's engine even more responsive. We do keep both the AR design Catted and Catless setups in-stock here as well without the typical 4 week lead time. Feel free to drop me a PM if you guys have any further questions!

Can we discuss without a shop jumping in and trying to sell us something? Not so good taste...

[Kamal]

Originally Posted by evilstib

Can we discuss without a shop jumping in and trying to sell us something? Not so good taste...

I think he's just trying to be helpful and put in his opinion on why AR is such a popular piece. I appreciate the input and consider it to be useful insight in threads like these... if it were AR design chiming in like that, you might have an argument, but the fact that **********s sells the AA, AFE, and super expensive SuperSprint downpipes sort of negates what I think you're arguing... unless, of course, the mark up and pay off for selling the AR pipes is greater than the rest!

[Kamal]

Originally Posted by evilstib

Anyone? Catted downpipes....good gains...thoughts?

I'm sure you'll see gains with catted setups, as a low-cell count will allow the exhaust gases to flow more freely.. but with the added expense over catless designs, and the fact that some of the catted designs still throw codes... it makes more sense to go with the cheaper and more power yielding catless setups.

[KinoBoom]

I'm about to order my catless DP's, how do you guys do it with the CEL's? how do I pass state inspection???

[Kamal]

Originally Posted by KinoBoom

I'm about to order my catless DP's, how do you guys do it with the CEL's? how do I pass state inspection???

Depends on how your state performs them.. if they do a 'sniffer' test, then you'll have to switch back to the stock downpipes for the inspection. If they just look for codes, then make sure you're running an O2 sim or have stage 2 software that should keep the codes from coming up.

[KinoBoom]

Originally Posted by Kamal

Depends on how your state performs them.. if they do a 'sniffer' test, then you'll have to switch back to the stock downpipes for the inspection. If they just look for codes, then make sure you're running an O2 sim or have stage 2 software that should keep the codes from coming up.

just look for codes. Waiting on Cobb to release their stage 2...
Just read up a DIY on how to change the DP's, does it require alignment?!?! it messes with removing the steering rack.

[ar design]

Both our catted and catless downpipes offer nice gains. We recommend catless unless customer needs to pass emissions. **********s usually has them in stock!

[ModBargains.com]

Originally Posted by Kamal

I think he's just trying to be helpful and put in his opinion on why AR is such a popular piece. I appreciate the input and consider it to be useful insight in threads like these... if it were AR design chiming in like that, you might have an argument, but the fact that **********s sells the AA, AFE, and super expensive SuperSprint downpipes sort of negates what I think you're arguing... unless, of course, the mark up and pay off for selling the AR pipes is greater than the rest!

Glad to see that you understand that I'm here to help out and am actually here to join in on the discussion! As you've already mentioned, we do have a ton of different brands available and I honestly believe that the AR design downpipes are the best choice! We have done tons of installs here for local customers and the welds and fitments on the AR design downpipes are flawless. I'm sure other owners of AR design piece can attest to this as well.

Originally Posted by KinoBoom

I'm about to order my catless DP's, how do you guys do it with the CEL's? how do I pass state inspection???

You can simply purchase a DP FIX aka o2 sim to eliminate the CEL on the dash. Responding to your email right now

Originally Posted by ar design

Both our catted and catless downpipes offer nice gains. We recommend catless unless customer needs to pass emissions. **********s usually has them in stock!

Indeed sir!