[BMWApp]

Originally Posted by mike@x-ph.com

HJS constant price increase is forcing Fabspeed to do the same unfortunately

I noticed that AA just raised the price of their catted downpipe. Is that related to demand, competitors increasing their pricing or something else?

[mike@x-ph.com]

Originally Posted by BMWApp

I noticed that AA just raised the price of their catted downpipe. Is that related to demand, competitors increasing their pricing or something else?

Its a combination of increase in GESI cats & raw material pricing

[mlev]

Don't forget CG Precision DS-01 catted DP. Largest diameter/most airflow.

I'm at 2 years with no CEL ever. Cheaper than Fabspeed too. Very aggressive sound paired with my AWE catback.

[Boostedphil698]

Originally Posted by mlev

Don't forget CG Precision DS-01 catted DP. Largest diameter/most airflow.

I'm at 2 years with no CEL ever. Cheaper than Fabspeed too. Very aggressive sound paired with my AWE catback.

I believe that downpipe is only for the B58.

[thejeremyman9]

Originally Posted by mlev

Don't forget CG Precision DS-01 catted DP. Largest diameter/most airflow.

I'm at 2 years with no CEL ever. Cheaper than Fabspeed too. Very aggressive sound paired with my AWE catback.

I think you said this before too, but I don't think there's any evidence the CG has more airflow for the 3'' outlet option since the outlet at the bottom is the same to mate with all stock-fitment catbacks. Its 200 cell as is Fabspeed and the size of the cat/housing is the same. Nothing against CG Precision as it is a viable no CEL option (and maybe the cheapest now, although built to order i believe), but i just dont think "largest diameter/most airflow" is actually supported.

The 3.5'' outlet option might be a different story but very few people have a 3.5'' exhaust.

[thejeremyman9]

Originally Posted by Boostedphil698

I believe that downpipe is only for the B58.

No, its been around for years for the F3x N55s. I considered it years ago when i got fabspeed, but it was BTO with a long lead time.

[johnung]

Originally Posted by BMWApp

I noticed that AA just raised the price of their catted downpipe. Is that related to demand, competitors increasing their pricing or something else?

From what I've heard the precious metals used to make catalytic converters have gone up so cat makers raised their price and the downpipe manufacturers raised their price.

The good news is that it's like a rising real estate market. So that big new house that you want to buy costs more, but your current house is worth more too.

A couple of years ago a good price to sell your used downpipe may have been $250. Now you might get 2x-3x as much. If you live in a tough emissions state, just make sure to buy a high quality catted downpipe without a CEL so you don't need a stock DP to reinstall to pass emissions.

[mlev]

Originally Posted by Boostedphil698

I believe that downpipe is only for the B58.

It fits N55, which I have.

Originally Posted by thejeremyman9

I think you said this before too, but I don't think there's any evidence the CG has more airflow for the 3'' outlet option since the outlet at the bottom is the same to mate with all stock-fitment catbacks. Its 200 cell as is Fabspeed and the size of the cat/housing is the same. Nothing against CG Precision as it is a viable no CEL option (and maybe the cheapest now, although built to order i believe), but i just dont think "largest diameter/most airflow" is actually supported.

The 3.5'' outlet option might be a different story but very few people have a 3.5'' exhaust.

It's my understanding that the 5" diameter catalyst still allows for it to accommodate more airflow regardless of the flanges. Primarily involving the rate of velocity this impacts.


Ordered my DS-1 from ECS and it took about a month to ship. It looks like there may be a longer backlog now due to COVID. I only paid $639.95 + tax for my DS-1 from ECS for the very brief period of time they accidentally had the price listed so low.

[XutvJet]

Originally Posted by BMWApp

I noticed that AA just raised the price of their catted downpipe. Is that related to demand, competitors increasing their pricing or something else?

Wow. You can get the HJS Euro 6 DP for $300 less than the Fabspeed DP now.

My HJS Euro 6 DP fit perfectly, looks nearly OEM, improves exhaust sound, makes the turbo more responsive, and added a nice punch in midrange power.

https://www.fabspeed.com/bmw-m235i-f...tted-downpipe/

The stock DP has dual 300 count cell (600 total) cats. The HJS dual 100 and 200 count cell (300 total) HJS cats. The Fabspeed DP a single 200 count cell HJS cat.

[hristo.p]

Originally Posted by johnung

From what I've heard the precious metals used to make catalytic converters have gone up so cat makers raised their price and the downpipe manufacturers raised their price.

The good news is that it's like a rising real estate market. So that big new house that you want to buy costs more, but your current house is worth more too.

A couple of years ago a good price to sell your used downpipe may have been $250. Now you might get 2x-3x as much. If you live in a tough emissions state, just make sure to buy a high quality catted downpipe without a CEL so you don't need a stock DP to reinstall to pass emissions.

I'd like to sell my OEM DP and was wondering where to start. Scrap yards, Craigslist or somewhere else?

[hristo.p]

Originally Posted by Boostedphil698

Hey everyone,

I'm trying to figure out what downpipe would be the best choice for me. I know the AA downpipe is EPA certified while the Fabspeed one is not. Please share your experiences and opinions below. Also, which downpipe gives more sound?

I have the AA one with a meisterschaft EV exhaust. Good performance and great sound. I've gotten 3-4 compliments on the street with that combo. I drive with a valve open and sport + 95% of the time.

[Boostedphil698]

Originally Posted by hristo.p

I have the AA one with a meisterschaft EV exhaust. Good performance and great sound. I've gotten 3-4 compliments on the street with that combo. I drive with a valve open and sport + 95% of the time.

I usually keep my car in comfort until it's warmed up. I'm also not trying to piss off my neighbors.

[AMG KLR]

EPA certified (AKA the AA DP) basically means you can't get in trouble with tampering with cats from the law / emissions?

[Boostedphil698]

Originally Posted by AMG KLR

EPA certified (AKA the AA DP) basically means you can't get in trouble with tampering with cats from the law / emissions?

Correct.

[mike@x-ph.com]

Originally Posted by hristo.p

I have the AA one with a meisterschaft EV exhaust. Good performance and great sound. I've gotten 3-4 compliments on the street with that combo. I drive with a valve open and sport + 95% of the time.

[thejeremyman9]

Originally Posted by AMG KLR

EPA certified (AKA the AA DP) basically means you can't get in trouble with tampering with cats from the law / emissions?

Except in California. Its only 49 state certified last i saw; doesn't have CARB approval. Having said that you should be able to still pass emissions even if technically it can fail visual.

[vrooooom]

Has anyone got a back-back DP comparison in terms of power increase? That’s the main reason for installing it but all we have are a manufacturer’s claim of 93% of a catless performance?

Passes the emission is great but without the added power, why change to a new DP, the stock also passes.

[XutvJet]

Originally Posted by vrooooom

Has anyone got a back-back DP comparison in terms of power increase? That’s the main reason for installing it but all we have are a manufacturer’s claim of 93% of a catless performance?

Passes the emission is great but without the added power, why change to a new DP, the stock also passes.

There are dynos showing the gains. Most catted DPs will make around 15whp and 25wtq across the powerband plus increase throttle. A catless DP will only see a few extra who and wtq all the while stinking of raw fuel and rasp.

[thejeremyman9]

Originally Posted by vrooooom

Has anyone got a back-back DP comparison in terms of power increase? That’s the main reason for installing it but all we have are a manufacturer’s claim of 93% of a catless performance?

Passes the emission is great but without the added power, why change to a new DP, the stock also passes.

As noted above the power gains from DPs are legit, and its not only peak #'s, its the entire area under the curve, throttle response/spool time, etc. DP is really the only bolt on mod that provides a tangible power gain all by itself, and the gains are further increased when tuned.

[n55david]

Originally Posted by XutvJet

There are dynos showing the gains. Most catted DPs will make around 15whp and 25wtq across the powerband plus increase throttle. A catless DP will only see a few extra who and wtq all the while stinking of raw fuel and rasp.

lol this was hilarious. raw fuel and rasp. this is so incredibly incorrect.

[n55david]

Originally Posted by vrooooom

Has anyone got a back-back DP comparison in terms of power increase? That’s the main reason for installing it but all we have are a manufacturer’s claim of 93% of a catless performance?

Passes the emission is great but without the added power, why change to a new DP, the stock also passes.

big power increases with DP. the more modded you are the more power it will make. catless makes a.bit more than catted but not much. however, turbo swap and.big boost the catless is a much bigger gain.

[mike@x-ph.com]

Originally Posted by Phantom10R

big power increases with DP. the more modded you are the more power it will make. catless makes a.bit more than catted but not much. however, turbo swap and.big boost the catless is a much bigger gain.

+1

on the stock turbo, you won't notice the difference between catless and high flow cat

on upgraded turbo and depending on your setup, there might be ~ 30 whp difference between the 2