[Boostedphil698]

Hey everyone, I don't have an M2 but I have a 435i and wanted some feedback on the Fabspeed downpipe. How was passing emissions (preferably in PA)? How's the sound paired with an aftermarket catback? How long have you had the downpipe? Thank you everyone.

[///M TOWN]

Originally Posted by Boostedphil698

Hey everyone, I don't have an M2 but I have a 435i and wanted some feedback on the Fabspeed downpipe. How was passing emissions (preferably in PA)? How's the sound paired with an aftermarket catback? How long have you had the downpipe? Thank you everyone.

It's loud combined IMO

Try searching here and on YouTube there is lots of info out there

[VisualEcho]

I haven't had to pass emissions, but I can tell you that I've had no CEL.

And the DP is so good that you probably won't need a catback afterwards, especially if you pair it with the Dinan resonator delete. The Fabulous Fabspeed is what the name should be.

[Boostedphil698]

Originally Posted by VisualEcho

I haven't had to pass emissions, but I can tell you that I've had no CEL.

And the DP is so good that you probably won't need a catback afterwards, especially if you pair it with the Dinan resonator delete. The Fabulous Fabspeed is what the name should be.

I already have a catback (AWE) and its pretty tame unless I mash the gas. I can't hear it in comfort mode when just cruising. But yeah I couldn't really find anything on YouTube as far as videos.

[///M TOWN]

[Boostedphil698]

Originally Posted by ///M TOWN

That's the sound I want!

[AndrewC1989]

My first emissions test (NJ) is due in January so not 100% sure about that, but since I've had no CEL's thus far that seems very promising as our tests are done via OBDII here and not measured via an exhaust sniffer. I've had the downpipe (paired with a Remus exhaust) for the better part of 3 years now and the only complaint I have is the brutal cold starts. Personally, I'm not interested in flashing the DME just to get rid of them so I use a valve controller unit and modulate the throttle with my foot after starting the engine to make it less obnoxious. If I had to do that daily I'm sure it would get old and I'd flash the cold start out, but since it's not my DD I'm more than happy to have a start procedure. Makes the car feel a bit more special.

If you want to hear what it sounds like I have a thread here:

https://f87.bimmerpost.com/forums/sh....php?t=1432744

[Boostedphil698]

Originally Posted by AndrewC1989

My first emissions test (NJ) is due in January so not 100% sure about that, but since I've had no CEL's thus far that seems very promising as our tests are done via OBDII here and not measured via an exhaust sniffer. I've had the downpipe (paired with a Remus exhaust) for the better part of 3 years now and the only complaint I have is the brutal cold starts. Personally, I'm not interested in flashing the DME just to get rid of them so I use a valve controller unit and modulate the throttle with my foot after starting the engine to make it less obnoxious. If I had to do that daily I'm sure it would get old and I'd flash the cold start out, but since it's not my DD I'm more than happy to have a start procedure. Makes the car feel a bit more special.

If you want to hear what it sounds like I have a thread here:

https://f87.bimmerpost.com/forums/sh....php?t=1432744

It sounds really good. The turbo noise sounds basically catless.

[AndrewC1989]

Originally Posted by Boostedphil698

It sounds really good.

Thanks, I think so too!

Originally Posted by Boostedphil698

The turbo noise sounds basically catless.

While catted dp's are not quite as loud as catless, I think they sound much better. "Throatier" I think is the word I would use. Catless dp's tend to sound very hollow. Also the added benefit of a cat is no smells or smoke. Really I can't see any reason you'd go catless over a sport cat other than you have a burble tune and don't want to melt the cat core. Price is really the only drawback.

[Boostedphil698]

Originally Posted by AndrewC1989

Thanks, I think so too!

While catted dp's are not quite as loud as catless, I think they sound much better. "Throatier" I think is the word I would use. Catless dp's tend to sound very hollow. Also the added benefit of a cat is no smells or smoke. Really I can't see any reason you'd go catless over a sport cat other than you have a burble tune and don't want to melt the cat core. Price is really the only drawback.

That's why I came here because it seems most F30 owners just throw a catless downpipe on and call it. Not my cup of tea. The hp loss from Fabspeed is negligible.

[VisualEcho]

Originally Posted by AndrewC1989

My first emissions test (NJ) is due in January so not 100% sure about that, but since I've had no CEL's thus far that seems very promising as our tests are done via OBDII here and not measured via an exhaust sniffer. I've had the downpipe (paired with a Remus exhaust) for the better part of 3 years now and the only complaint I have is the brutal cold starts. Personally, I'm not interested in flashing the DME just to get rid of them so I use a valve controller unit and modulate the throttle with my foot after starting the engine to make it less obnoxious. If I had to do that daily I'm sure it would get old and I'd flash the cold start out, but since it's not my DD I'm more than happy to have a start procedure. Makes the car feel a bit more special.

If you want to hear what it sounds like I have a thread here:

https://f87.bimmerpost.com/forums/sh....php?t=1432744

You are singlehandedly going to make me buy a Remus. lol

[AndrewC1989]

Originally Posted by Boostedphil698

That's why I came here because it seems most F30 owners just throw a catless downpipe on and call it. Not my cup of tea. The hp loss from Fabspeed is negligible.

Can't find the thread offhand as it's been years, but I remember seeing dynos on this forum of an n55m2 with a 200cell cat compared to catless car and I think there was little if any difference at all horsepower-wise (like less than 5whp) so you can't even make the power argument, at the end of the day It's just cost. People on a budget would rather spend $500 than $1500 and I guess they don't care that everyone behind them is turning to their spouse in the car and asking if they farted.

Originally Posted by VisualEcho

You are singlehandedly going to make me buy a Remus. lol

You should, lol. It's the cherry on top.

[M2PDX]

I have a Fabspeed catted downpipe on my N55 M2, and it passed emissions in Oregon with no problems. It picked up 37 hp at the dyno, when paired with my Dinan intake. And the car was MUCH more responsive.

Plus, it also sounds fabulous.

Get one!!! It's the best money you can spend on an M2.

Buy it from Mike at Xtreme Powerhouse. A forum sponsor.

[DanG]

Hate to jump in here. But I have to remind everyone that any downpipe is illegal under federal law. You are not allowed to change a manufacturer’s emission system.

[Boostedphil698]

Originally Posted by M2PDX

I have a Fabspeed catted downpipe on my N55 M2, and it passed emissions in Oregon with no problems. It picked up 37 hp at the dyno, when paired with my Dinan intake. And the car was MUCH more responsive.

Plus, it also sounds fabulous.

Get one!!! It's the best money you can spend on an M2.

Buy it from Mike at Xtreme Powerhouse. A forum sponsor.

I guess I'm going to have to get one on order soon!

[///M TOWN]

Originally Posted by DanG

Hate to jump in here. But I have to remind everyone that any downpipe is illegal under federal law. You are not allowed to change a manufacturer's emission system.

It's a smog legal Catalytic converter

As long as it passes no smog police are going to show up at your door and arrest you

And BMW could care less as long as it isn't kicking any codes

And by not kicking a code, it clearly means it's actually doing its intended job

[DanG]

Originally Posted by ///M TOWN

It's a smog legal Catalytic converter

As long as it passes no smog police are going to show up at your door and arrest you

And the BMW could care less as long as it doesn't kick an actual code

And as long as it doesn't kick a code it means it's actually doing its intended job

We had a dealer refuse to install one for a customer. And told him that if it was installed he would turn them in at the time of a service.

Just because most dealers will ignore it does not make it legal.

[AndrewC1989]

Originally Posted by ///M TOWN

As long as it passes no smog police are going to show up at your door and arrest you

Maybe they would in California

[///M TOWN]

Originally Posted by AndrewC1989

Maybe they would in California

It's a great place to visit...

[///M TOWN]

Originally Posted by DanG

We had a dealer refuse to install one for a customer. And told him that if it was installed he would turn them in at the time of a service.

Just because most dealers will ignore it does not make it legal.

Just because somebody tells you that and just because you might believe it's illegal doesn't actually make it illegal

[Boostedphil698]

Originally Posted by DanG

We had a dealer refuse to install one for a customer. And told him that if it was installed he would turn them in at the time of a service.

Just because most dealers will ignore it does not make it legal.

Wait, so you're telling me the dealer said they'd turn him in if he put something on his own car, at another shop or his own time? Sounds like a massive over reach with the dealer. All the dealer had to do was say "no we won't do that here."

[CalAcacian]

Originally Posted by DanG

Hate to jump in here. But I have to remind everyone that any downpipe is illegal under federal law. You are not allowed to change a manufacturer’s emission system.

Not to be overly pedantic, but the federal law is largely irrelevant here. It is the model under which most people are prosecuted, but it is not the actual mechanism of enforcement.

Under 42 U.S.C. Chapter 85 II A Section 7522(a)(3)(A) removal of emissions control devices is a violation of federal law. However, end user enforcement of this subsection is almost never under this code section, unless you are stopped on federal land i.e. a national park (there are additional rare exceptions which are not worth getting into here).

Sellers of emissions defeating devices (sport cat or test pipe manufacturers, makers of long tube headers, etc.) may be prosecuted under 7522(a)(3)(B) and are this is more common because of the interstate nature of the businesses.

But the vast majority of emissions enforcement is done under state laws, since you're mostly being pulled over by state law enforcement. It's a minor point, but the federal law doesn't really effect people directly.