Downpipes

Lerxst M4 · 04-18-2017, 04:06 PM

Quote:

Originally Posted by mister2d

I always wondered this about scrapped cats. Is there enough titanium from gutting these out to sell to a metal recycler? Or is it enough titanium to only be worth 50 cents? lol

haha good question! I hope it's not a million bucks because I chunked it out with the trash the next day (shhhh). lolol

apsuard · 04-18-2017, 10:27 PM

Quote:

Originally Posted by Lerxst M6

I bought a set of used OEM downpipes for $350 off of eBay and gutted them.

I don't see any listings there currently but they are double walled and the fitment is perfect. Took me 15 minutes to drill out the catalyst.

Easy peasy.

Agree. Same route I took.

Royce Martin · 04-22-2017, 10:24 PM

Quote:

Originally Posted by mister2d

He means that its cats were gutted of its cells [honeycomb]. Now it's a stock pipe without a catalytic converter.

Oh, does it make it louder as if I bought aftermarket downpipes?

Royce Martin · 04-22-2017, 10:25 PM

Quote:

Originally Posted by 13M5F10

About $1500 brand new

Someone lease should be ending soon, that'll be on here for much cheaper soon lol

Royce Martin · 04-22-2017, 10:26 PM

Quote:

Originally Posted by apsuard

They are the stock downpipes but I removed the catalytic converters. I went this route to ensure perfect fitment. I have another set on my car and love them.

Do you have a sound clip?

Royce Martin · 04-22-2017, 10:27 PM

Quote:

Originally Posted by Lerxst M6

I bought a set of used OEM downpipes for $350 off of eBay and gutted them.

I don't see any listings there currently but they are double walled and the fitment is perfect. Took me 15 minutes to drill out the catalyst.

Easy peasy.

Do you have a sound clip?

Lerxst M4 · 04-22-2017, 11:30 PM

Quote:

Originally Posted by Royce Martin

Do you have a sound clip?

I don't - they're still sitting on my work bench in the garage. I can't believe they would sound any different than any other catless downpipe.

Mine will be coupled up with my AWE Touring exhaust. One day I'll get around to getting them in. lol

Royce Martin · 04-23-2017, 02:54 AM

Quote:

Originally Posted by Lerxst M6

I don't - they're still sitting on my work bench in the garage. I can't believe they would sound any different than any other catless downpipe.

Mine will be coupled up with my AWE Touring exhaust. One day I'll get around to getting them in. lol

Would love to see a sound clip, I'll search it up on Youtube.

apsuard · 04-23-2017, 07:10 AM

Quote:

Originally Posted by Royce Martin

Would love to see a sound clip, I'll search it up on Youtube.

It sounds the same as any other downpipes. I will get a sound clip but I have Eisenmann race exhaust also so mine is pretty loud. Turbo spool noise is awesome.

ice7 · 04-23-2017, 02:12 PM

Quote:

Originally Posted by Royce Martin

Quote:

Originally Posted by apsuard

They are the stock downpipes but I removed the catalytic converters. I went this route to ensure perfect fitment. I have another set on my car and love them.

Do you have a sound clip?

I've done the OEM gutted downpipes on the M6 and have ESS dps on the M5 and same net effect. Both cars have aftermarket exhausts. Obviously fitment was better with the OEM. Here's some sound clips.

https://instagram.com/p/BTINP58l0hN/

https://instagram.com/p/BSrbml4lFW9/

https://instagram.com/p/BTMjCseFzh9/

cali_m5 · 04-24-2017, 02:39 PM

Quote:

Originally Posted by apsuard

Quote:

Originally Posted by Royce Martin

What's the difference between that one and the one that is currently on my 5er? It's stock.

They are the stock downpipes but I removed the catalytic converters. I went this route to ensure perfect fitment. I have another set on my car and love them.

Doesn't your cel come on?? And does it make a huge sound difference? Cuz I have a rpi-gtm and when I had catless dp shit was so loud lmao

apsuard · 04-25-2017, 05:07 AM

Quote:

Originally Posted by cali_m5

Doesn't your cel come on?? And does it make a huge sound difference? Cuz I have a rpi-gtm and when I had catless dp shit was so loud lmao

I have a tune so no CEL. I like it loud so it is perfect for me. I had the Eisenmann race exhaust to start with resonator delete but I wanted it a little louder. I love the sound of catless but understand why most keep stock exhaust with catless. I only put about 6k miles per year so it doesn't bother me. It would probably get old if I had to daily it and had a long commute.

cali_m5 · 04-25-2017, 11:02 AM

Quote:

Originally Posted by apsuard

Quote:

Originally Posted by cali_m5

Doesn't your cel come on?? And does it make a huge sound difference? Cuz I have a rpi-gtm and when I had catless dp shit was so loud lmao

I have a tune so no CEL. I like it loud so it is perfect for me. I had the Eisenmann race exhaust to start with resonator delete but I wanted it a little louder. I love the sound of catless but understand why most keep stock exhaust with catless. I only put about 6k miles per year so it doesn't bother me. It would probably get old if I had to daily it and had a long commute.

The drone gave me the fattest headaches but you're completely right the sound is intoxicating but I don't have a tune and the cel was driving me crazy smh

TMR · 04-29-2017, 10:32 PM

How long do downpipes take to install?

Blkthght · 04-30-2017, 03:40 PM

Are "high flow" catted down pipes a gimmick? Any tangible gain in sound? Is the benefit from using catted that I won't get the gas smell? Is waste gate rattling still a thing?

TheHouseWon · 04-30-2017, 07:59 PM

Quote:

Originally Posted by Blkthght

Are "high flow" catted down pipes a gimmick? Any tangible gain in sound? Is the benefit from using catted that I won't get the gas smell? Is waste gate rattling still a thing?

I would say so. The stock cats can handle more horsepower than the clutches. I went catless for sound more than for power. Catted dp's are insanely priced...you can install small cats down the exhaust system for much cheaper.

Just my opinion.

babyboss · 05-13-2017, 02:23 PM

Quote:

Originally Posted by apsuard

I have set of catless OEM I will sell for $500. Guaranteed perfect fitment and double walled.

any power/sound differences ?
no ecu light comes on ?
any other mods u got ?

04-29-2017, 10:32 PM	#36
TMR Brigadier General 394 Rep 3,161 Posts Drives: M3 Join Date: Jun 2008 Location: Torrance iTrader: (12)	How long do downpipes take to install? __________________ 2015 M3 BPM Tuned, Eibach, Magnaflow and more www.tmrmzine.com/m3/f80 SOLD E92 Slēk Carbon Fiber Widebody M3 www.tmrmzine.com/m3/slek/ SOLD E92 335i Stage 3+ with all the toys www.tmrmzine.com/335/ SOLD E39 M5 Modded, What a great car! www.tmrmzine.com/m5/
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04-30-2017, 03:40 PM	#37
Blkthght Private First Class 28 Rep 165 Posts Drives: 2015 F10 M5 CP Singapore Grey Join Date: Nov 2011 Location: Los Angeles, CA iTrader: (2)	Are "high flow" catted down pipes a gimmick? Any tangible gain in sound? Is the benefit from using catted that I won't get the gas smell? Is waste gate rattling still a thing?
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