|
Post Reply |
|
Thread Tools | Search this Thread |
12-04-2022, 10:30 PM | #45 | |
BimmerPost Supporting Vendor
1910
Rep 4,902
Posts |
Quote:
__________________
|
|
Appreciate
1
deli333145.00 |
12-25-2022, 10:48 AM | #46 |
Second Lieutenant
145
Rep 230
Posts |
|
Appreciate
0
|
12-25-2022, 11:10 AM | #47 | |
BimmerPost Supporting Vendor
1910
Rep 4,902
Posts |
Quote:
__________________
|
|
Appreciate
0
|
04-27-2023, 08:22 PM | #50 |
Private First Class
54
Rep 168
Posts |
performance i highly doubt it since they all still taper to 2.5 for the midpipe. We need a company to do a true dual 3in full exhaust
__________________
2018 M4 Competition DCT
-Jordan Tuned, PS2+, PI, E85, stock motor, stock clutch, MT ET SS |
Appreciate
0
|
04-27-2023, 09:32 PM | #51 |
Captain
1018
Rep 910
Posts |
It will not gain any HP/TQ. Just sounds a little deeper than stock at start and drive. Spools it a little faster. Well worth it. My "link" with the base exhaust on page 2 works.
|
Appreciate
1
Info@mad-us.com1909.50 |
04-28-2023, 10:56 AM | #52 |
BimmerPost Supporting Vendor
1910
Rep 4,902
Posts |
__________________
|
Appreciate
0
|
04-28-2023, 01:17 PM | #53 |
Captain
1153
Rep 783
Posts |
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.
__________________
Mosselman-powered M4 - 698/714 | 2.9 Whipple 2004 Cobra - 690/645 | Instagram
|
Appreciate
0
|
04-28-2023, 02:02 PM | #54 |
Captain
1018
Rep 910
Posts |
[QUOTE=heitzke;30080490]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.[/QUOTE Have you seen my pictures earlier of what could be rattling? It is fixable but MAD should rotate the O2 bung. |
Appreciate
1
heitzke1152.50 |
04-28-2023, 02:14 PM | #55 |
Captain
1153
Rep 783
Posts |
Yeah I did, thanks for posting those. That gives me a few spots to check - could be that front hanger against that bracket. I'll post up some pics too when I get underneath this weekend
__________________
Mosselman-powered M4 - 698/714 | 2.9 Whipple 2004 Cobra - 690/645 | Instagram
|
Appreciate
0
|
04-28-2023, 02:19 PM | #56 |
Captain
1018
Rep 910
Posts |
What was making noise for me was the mid pipe hanger in the video but what could be making a vibrating or rattling noise is the O2 sensor against the underside. Once things heat up and expand, it might move away and quit making noise. MAD needs to move the O2 around the pipe.
|
Appreciate
0
|
05-05-2023, 12:20 PM | #57 |
Brigadier General
2268
Rep 4,134
Posts |
The faster spool would imply more power.
__________________
Mods: Yes.
|
Appreciate
0
|
05-07-2023, 12:54 PM | #59 |
Major
881
Rep 1,044
Posts
Drives: 2018 M4 Competition
Join Date: Mar 2018
Location: Chino Hills, California
|
Anyone have sound clips of these downpipes matched with AA cat-less single mid and Remus Muffler?
__________________
Instagram: Slaughter.Mode
|
Appreciate
0
|
05-08-2023, 08:04 AM | #60 |
Brigadier General
2268
Rep 4,134
Posts |
Explain how you have a faster spool (which is an indicator of less restriction and more flow) without a power gain?
__________________
Mods: Yes.
|
Appreciate
0
|
05-08-2023, 09:16 AM | #61 |
Captain
1153
Rep 783
Posts |
Faster spool would suggest a slightly different power curve, so technically more power somewhere within the curve but unsure how that would net out in peak power. Hypothetically of course, I swapped to faster spooling turbos at the same time as using these downpipes, so I can't really speak to the spool.
Either way, coming back in as I believe I found the source of the vibration and it was due to the hanger clearance on my VRSF mid and NOT because of these downpipes hitting something. The downpipes must have just angled my mid every so slightly differently and the clearance between the hanger is already pretty tight. I made some slight adjustments and fashioned a little rubber insulator.
__________________
Mosselman-powered M4 - 698/714 | 2.9 Whipple 2004 Cobra - 690/645 | Instagram
|
Appreciate
2
Info@mad-us.com1909.50 FrankMstein1018.00 |
05-08-2023, 10:10 AM | #62 | |
Brigadier General
2268
Rep 4,134
Posts |
Quote:
|
|
Appreciate
1
Info@mad-us.com1909.50 |
05-08-2023, 10:59 AM | #63 |
Captain
1153
Rep 783
Posts |
Right, i think we're saying the same thing
__________________
Mosselman-powered M4 - 698/714 | 2.9 Whipple 2004 Cobra - 690/645 | Instagram
|
Appreciate
2
AmuroRay2267.50 Info@mad-us.com1909.50 |
05-08-2023, 03:12 PM | #64 |
BimmerPost Supporting Vendor
1910
Rep 4,902
Posts |
Quicker Spool will result is more power at the bottom of the curve and a less lag from a roll.
__________________
|
Appreciate
0
|
05-09-2023, 08:42 AM | #65 |
Captain
1018
Rep 910
Posts |
Yes, the power in the 3500 range is improved. Most people want to quote peak. The pipes did help in the lower range but not in the peak/top end. I have the charts.
|
Appreciate
1
Info@mad-us.com1909.50 |
05-09-2023, 09:37 AM | #66 |
Brigadier General
2268
Rep 4,134
Posts |
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|