|
|
06-18-2019, 05:32 PM | #45 |
Lieutenant General
5613
Rep 11,075
Posts |
That is weird they used 2.5” resonators on 3” piping. You could change to 3” resonators but that would cost $150 if you can weld and $300 if you cannot and could make them harder to fit without risk of rubbing something.
|
Appreciate
0
|
06-18-2019, 05:37 PM | #46 | |
Brigadier General
4036
Rep 4,066
Posts |
Quote:
Compared to the stock system i don't see it being restrictive.
__________________
|
|
Appreciate
1
Dpc2u11486.00 |
06-18-2019, 09:37 PM | #49 |
Major General
2768
Rep 5,483
Posts |
Further back you go, less pipe diameter you need for the same flow rate because the gas is cooler
But I wouldn’t suggest they did the testing like evolve did to actually find the best placement and size seems like “resonators go here on this car so that’s where they are on our pipe” |
Appreciate
0
|
06-19-2019, 08:51 AM | #50 |
Brigadier General
4036
Rep 4,066
Posts |
I remember someone saying the gaskets these type of headers come with are usually not good and to use oem gaskets.
The OEM gasket is slightly smaller than the ports on the headers, assuming the exhaust ports on the head are the same size as the gaskets i don't see this being a problem so I'll probably still use the oem gaskets if that is the case when i remove the headers: This is what the Becker gasket looks like:
__________________
|
Appreciate
0
|
06-20-2019, 01:42 AM | #53 | |
Brigadier General
1477
Rep 3,040
Posts |
Quote:
judging by the photo that you have taken the OEM gasket is just fine. Even if its a mm undersized it shouldn't be a big problem. had the same kind of experience back when the e46 m3 headers on ebay were a hot item.
__________________
INSTAGRAM: GORDON.M3
North American Mr12Volt Carplay/Android Auto Distributor DINAN | EVOSPORT | VAC | ARP | RD SPORT | NEEZ | EIBACH | CSF | IND | BILSTEIN | KLASSEN | BREMBO | ENDLESS | BBS | BPM SPORT | PROJECT MU | EVENTURI |
|
Appreciate
0
|
06-20-2019, 08:02 AM | #54 | ||
Brigadier General
4036
Rep 4,066
Posts |
Stuck at 70%, almost there, thank you for all that have contributed so far.
The plan is to hopefully dyno this weekend and start the install right after that. Quote:
I plan to try to reuse most of the heat sheilds, even if it involves some cutting, but we'll see once I get to the install. Quote:
__________________
Last edited by tdott; 06-20-2019 at 08:32 AM.. |
||
Appreciate
0
|
06-20-2019, 03:26 PM | #55 |
Lieutenant General
5613
Rep 11,075
Posts |
Exchanges like that are one reason I have no interest in Facebook. Unfortunately, chat seems to be the way of the future and forums where people generally take the time to think about what they write before they write it are losing popularity.
|
Appreciate
0
|
06-21-2019, 02:46 PM | #59 |
Brigadier General
4036
Rep 4,066
Posts |
I couldn't wait any longer, I want to install the headers, so I went and got the before dyno today.
Thank you to everyone that contributed. All the info I provide is a direct result of the generosity of the community. 8500RPM SAMM3Y amrazM burnrbr Krypptic 6ixSpd and all my M3Post WhatApp Chat Buddies. Results are not great (peak number wise), but it is 93F Heat & 40% Humidity STD: 344rwhp 251rwtq SAE: 336rwhp 245rwtq
__________________
Last edited by tdott; 06-21-2019 at 02:56 PM.. |
06-21-2019, 03:07 PM | #60 |
Brigadier General
4036
Rep 4,066
Posts |
For comparison, N/A S65 cars on this dyno have made 333whp and 369whp, no idea what mods they had or what temps were or if it was SAE or STD.
ESS625 kit with primary cat delete made 527whp
__________________
|
Appreciate
0
|
06-21-2019, 05:48 PM | #62 |
///M
238
Rep 703
Posts |
For what its worth being an amazon / ebay setup, I have the becker full catless exhaust system (which is a steal at $950 when I bought it) and after 2-3 years its holding up fine. Only downside I had was the catback had to be extended an inch so the elbow wouldn't rest on the diff. Also, the gaskets it came with are trash, I got misfires in almost all cylinders.
Tempted to possibly buy the headers if the dyno results are promising.
__________________
Follow me on IG: dre.pt
|
Appreciate
0
|
06-21-2019, 08:11 PM | #63 | |
Brigadier General
1065
Rep 4,224
Posts |
Quote:
__________________
2024 BMW M2 Toronto Red 6MT
2020 Ford Mustang GT 6MT PP1 444rwhp (Sold)2013 M3 Coupe-MR/BLK ZCP, 2011 M3 Coupe-MR/Blk 2007 Porsche 997C2S Speed Yellow/Blk sport seats 2004 BMW M3 Imola/Blk |
|
Appreciate
0
|
06-21-2019, 08:13 PM | #64 |
Brigadier General
1065
Rep 4,224
Posts |
never mind double post
__________________
2024 BMW M2 Toronto Red 6MT
2020 Ford Mustang GT 6MT PP1 444rwhp (Sold)2013 M3 Coupe-MR/BLK ZCP, 2011 M3 Coupe-MR/Blk 2007 Porsche 997C2S Speed Yellow/Blk sport seats 2004 BMW M3 Imola/Blk Last edited by Dave07997S; 06-21-2019 at 08:14 PM.. Reason: double post |
Appreciate
0
|
06-21-2019, 08:16 PM | #65 | |
Colonel
3090
Rep 2,747
Posts |
Quote:
__________________
9ers
|
|
Appreciate
0
|
06-22-2019, 08:50 AM | #66 |
Major
564
Rep 1,207
Posts |
Those numbers seem odd, thats what a stock M3 puts down. Of course dyno to dyno comparisons aren't equal, but my car with your same mods made 380whp and 275tq as do most M3's with test pipes and a tune.
If you install the headers and then happen to make 380ish whp its going to look like the headers and x-pipe alone added 40 more hp. When in fact your "baseline" numbers are off for some reason.
__________________
Last edited by Gossypiboma; 06-22-2019 at 08:56 AM.. |
Appreciate
0
|
Post Reply |
Bookmarks |
|
|