New MAD Product Release- MAD BMW S55 3.5" FAT BOY DOWNPIPES M2C M3 M4

[FrankMstein]

Originally Posted by AmuroRay

I’d be happy to see them, do you have any logs as well?

CES pulls
S2-red pull
https://www.bootmod3.net/log?id=63bd...729b99b9d74e4e
S2-blue pull
https://www.bootmod3.net/log?id=63bd...0b431c363fd81a
S1-green pull
https://www.bootmod3.net/log?id=63bd...729b99b9d74e6c

EuroMpire was with stock cats a year earlier at the time time/temps but all are corrected but not logged, sorry.

[AmuroRay]

Originally Posted by FrankMstein

CES pulls
S2-red pull
https://www.bootmod3.net/log?id=63bd...729b99b9d74e4e
S2-blue pull
https://www.bootmod3.net/log?id=63bd...0b431c363fd81a
S1-green pull
https://www.bootmod3.net/log?id=63bd...729b99b9d74e6c

EuroMpire was with stock cats a year earlier at the time time/temps but all are corrected but not logged, sorry.

Without logs and the same smoothing, it's not a true apples to apples, but you can still compare. I'm comparing stage 1 vs stage , and the the catless downpipes are making more power:

At 3000RPM you're at 500ft-lbs of torque with these downpipes vs 420wtq without

At 5000RPM you're about 15wtq with downpipes than without

At 5252RPM (HP/TQ crossover) 10wtq

At 6500Rpm you're making 500WHp/410WTQ vs 490whp/399wtq

With the same smoothing, I'm sure the gains would look a fraction higher, but they definitely exist. Are you running the stock exhaust? What's the mileage on the plugs and coils?

[FrankMstein]

I saw that more power was added lower, but not peak. Like I said, peak is what people *usually* refer to and what I was referring to. The logs are linked but only for the CES runs. Smoothing is not going to give you any different results just averages the peaks and valleys of the chart. Corrected for temp and pressure is the important factor, both CES and EM are.

[Info@mad-us.com]

Originally Posted by FrankMstein

CES pulls
S2-red pull
https://www.bootmod3.net/log?id=63bd...729b99b9d74e4e
S2-blue pull
https://www.bootmod3.net/log?id=63bd...0b431c363fd81a
S1-green pull
https://www.bootmod3.net/log?id=63bd...729b99b9d74e6c

EuroMpire was with stock cats a year earlier at the time time/temps but all are corrected but not logged, sorry.

Great Data. Thank you for posting!

[matutino]

Info@mad-us.com do you plan to get these back in stock any time soon?
I have your single mid pipe with stock muffler and Im debating in between these or resonated ones. Which one would you suggest? Running full E85 stock turbos and i don't want any drone while cruising around.

[Info@mad-us.com]

Originally Posted by matutino

Info@mad-us.com do you plan to get these back in stock any time soon?
I have your single mid pipe with stock muffler and Im debating in between these or resonated ones. Which one would you suggest? Running full E85 stock turbos and i don't want any drone while cruising around.

Should be back in stock before aug 30th. I would go resonated they have more than enough flow for stock turbos and will help reduce raps and drone.

[matutino]

Originally Posted by Info@mad-us.com

Should be back in stock before aug 30th. I would go resonated they have more than enough flow for stock turbos and will help reduce raps and drone.

Aweome, will get a set, any coupons you can share 🤞

[Info@mad-us.com]

Originally Posted by matutino

Aweome, will get a set, any coupons you can share 🤞

Forum coupon code is MAD

[x04]

Originally Posted by heitzke

I have the downpipes and have been super happy with the tone, but I have the tiniest bit of vibration from them when the car is warming up. It's like the first 1-2min of a drive they vibrate against something but haven't been able to tell what it is yet.

I have to do an 02 sensor this weekend anyway so I'll take a fresh look but wasn't sure if anyone else has had vibrations as well.

Seen your video on YT with the VRSF downpipes. How different do these sound to those? I see that MAD has a sale right now on top of the code mentioned above. I already have different downpipes on order from another brand but might end up cancelling that for these

[Info@mad-us.com]

Originally Posted by warpaint340

Seen your video on YT with the VRSF downpipes. How different do these sound to those? I see that MAD has a sale right now on top of the code mentioned above. I already have different downpipes on order from another brand but might end up cancelling that for these

The customer who installed them and replaced the vrf said his exhaust sound deeper and less raspy with this el midpipe and remus rear end.

[x04]

Originally Posted by Info@mad-us.com

The customer who installed them and replaced the vrf said his exhaust sound deeper and less raspy with this el midpipe and remus rear end.

All I needed to hear. Order placed

[Info@mad-us.com]

Originally Posted by warpaint340

All I needed to hear. Order placed

[x04]

And the results with the fatboys, single midpipe, and dinan muffler: sound clips

Really not sure how much better this sounds than normal 3 inch downpipes, but it sounds good either way. No rasp on full load maybe a tinge on half throttle in the midrange but nothing crazy. Loud as hell and deep sounding, just how I like it

[Info@mad-us.com]

That sounds great! The fatboys give off some of the best sounds of any downpipe in my opinion .

[Info@mad-us.com]

Now available in Silver ceramic coating.

[f30phntm]

Originally Posted by Jsawaged

https://linksharing.samsungcloud.com/bD9DzEULt0E8

can you resend sound clips by any chance? the link is expired

[f30phntm]

Originally Posted by x04

And the results with the fatboys, single midpipe, and dinan muffler: sound clips

Really not sure how much better this sounds than normal 3 inch downpipes, but it sounds good either way. No rasp on full load maybe a tinge on half throttle in the midrange but nothing crazy. Loud as hell and deep sounding, just how I like it

sounds super good, what single midpipe are you running? i have the v1 mpe titanium muffler and was thinking about opting with resonated midpipe with fatboys.

[x04]

Originally Posted by f30phntm

sounds super good, what single midpipe are you running? i have the v1 mpe titanium muffler and was thinking about opting with resonated midpipe with fatboys.

MAD single. I think it will sound cleaner resonated with MPE

[Info@mad-us.com]

Originally Posted by x04

MAD single. I think it will sound cleaner resonated with MPE

I agree. We are working on a resonated version midpipe.

[f30phntm]

awesome, do you by any chance have more sound clips? I am definitely leaning towards getting resonated single or EL but your setup sounds amazing. How is it in the cabin?

[Info@mad-us.com]

Originally Posted by f30phntm

awesome, do you by any chance have more sound clips? I am definitely leaning towards getting resonated single or EL but your setup sounds amazing. How is it in the cabin?

Was this directed at me ? If so what setup were you looking for a clip of?

[KGriess]

Any idea how these sound with valvetronic equal length exhaust? Looking to get downpipes but unsure what to get with my exhaust setup