BMW M3 Forum (E90 E92)

BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   M3Post - BMW M3 Forum > E90/E92 M3 Technical Topics > Engine, Transmission, Exhaust, Drivetrain, ECU Software Modifications
 
Vorsteiner
Post Reply
 
Thread Tools Search this Thread
      02-20-2009, 01:05 AM   #23
FStop7
I like cars
FStop7's Avatar
Vatican City State
108
Rep
5,058
Posts

Drives: M6
Join Date: Oct 2008
Location: Newbury Park, CA

iTrader: (3)

Quote:
Originally Posted by ///M PWR 00 View Post
I think this setup will gain maximum tq and some hp too... judging by what the other member with the H pipe claims (90wtq).

I honestly am just looking for a clean sounding setup that doesnt LOSE power so I am not expecting the world... I just want it to sound loud but clean. Xpipes are known to be raspy while H pipes deeper.
ROFL!!!

You're not gaining 90ft-lb of torque with an H pipe. That's the funniest thing I've heard all week.
__________________
Appreciate 0
      02-20-2009, 01:08 AM   #24
camaross305
camaross305's Avatar
53
Rep
1,825
Posts

Drives: 2008 M3
Join Date: Jul 2008
Location: gainesville fl

iTrader: (20)

Quote:
Originally Posted by FStop7 View Post
ROFL!!!

You're not gaining 90ft-lb of torque with an H pipe. That's the funniest thing I've heard all week.
I dont think he means just from an H we are talking, exhaust, deletling the cats, filter, tune, pulley, and H pipe. The "typical" bolt ons but instead of an X and H..... where as an X pipe might gain 60-70tq from stock the H may be around 80-90
__________________
The original Hid angel eyes for sale now on ebay

User name lmims526894rou

Or contact me at chrism9551@aol.com
Appreciate 0
      02-20-2009, 02:24 AM   #25
///M PWR 00
Captain
///M PWR 00's Avatar
40
Rep
938
Posts

Drives: Porsche
Join Date: Mar 2008
Location: Yonkers, NY

iTrader: (0)

Quote:
Originally Posted by FStop7 View Post
ROFL!!!

You're not gaining 90ft-lb of torque with an H pipe. That's the funniest thing I've heard all week.


I am not the one making the claims so stop being a douche bag before you get E-slapped.

If you re-read my posts I said I was skeptical about 90wtq and I would need to see a dyno graph before believing it. It really annoys me when morons come on here and make comments without reading the thread...
__________________
Appreciate 0
      02-20-2009, 03:07 AM   #26
Bluesummer
Lieutenant General
Bluesummer's Avatar
Taiwan
186
Rep
15,427
Posts

Drives: slower than Ayrton Senna
Join Date: Dec 2006
Location: Nürburgring, be there once, your heart, your soul will stay there.

iTrader: (13)

Garage List
2015 M4  [0.00]
2011 E82 135  [0.00]
2011 M3  [0.00]
2007 335  [0.00]
Quote:
Originally Posted by camaross305 View Post
Here is a a great example... all he has is an H pipe, exhaust, pulley and scoops

Look at the numbers with just that and not even a tune or filter!!

http://www.m3post.com/forums/showpos...8&postcount=16

here is some more stock numbers to compare

http://www.m3post.com/forums/showthr...k+dyno+numbers

seems h pipe is pretty promising
wow
________
ROLL BLUNTS

Last edited by Bluesummer; 09-07-2011 at 07:05 AM.
Appreciate 0
      02-20-2009, 03:13 AM   #27
dogears
My master volume goes to 11
dogears's Avatar
9
Rep
424
Posts

Drives: 2009 Space Gray M3 Sedan M-DCT
Join Date: Dec 2008
Location: Cherry Hill, NJ

iTrader: (0)

Different dynos so no way to make any valid comment...... H pipe will make virtually no difference, IMO. Especially if X-pipe has flow between the sides at the X. Maybe a few HP if you are lucky.
Appreciate 0
      02-20-2009, 03:20 AM   #28
Manny212
Captain
Manny212's Avatar
United_States
13
Rep
659
Posts

Drives: 2008 M3
Join Date: Apr 2007
Location: NY

iTrader: (3)

Send a message via AIM to Manny212
I can vouch for Frankie aka ///Mpower...But back to the discussion.

I myself have not even heard about an Hpipe so it would be nice to see some evidence of this. I am going to do an xpipe after my exhaust and curious as to what an hpipe can do.
__________________

2008 E92///M3 - | Alpine White/Fox Red Extended Novillo | Technology | Premium | Cold |
Mods: | 19" Avante Garde | Macht Schnell Filter | RPi Scoops | Rogue SSK | MS Spacers | ACM Test Pipes | ESS Tune | Remus Race | LUX V4 Angels | KW V3 |
Appreciate 0
      02-20-2009, 03:27 AM   #29
///M PWR 00
Captain
///M PWR 00's Avatar
40
Rep
938
Posts

Drives: Porsche
Join Date: Mar 2008
Location: Yonkers, NY

iTrader: (0)

Quote:
Originally Posted by Manny212 View Post
I can vouch for Frankie aka ///Mpower...But back to the discussion.

I myself have not even heard about an Hpipe so it would be nice to see some evidence of this. I am going to do an xpipe after my exhaust and curious as to what an hpipe can do.
Thanks Manny . lets go to the muffler shop tomorrow and have them weld in a H-pipe.... I bet it would sound crazy and probably wouldnt cost more then 200$ lol.
__________________
Appreciate 0
      02-20-2009, 03:31 AM   #30
camaross305
camaross305's Avatar
53
Rep
1,825
Posts

Drives: 2008 M3
Join Date: Jul 2008
Location: gainesville fl

iTrader: (20)

Quote:
Originally Posted by ///M PWR 00 View Post
Thanks Manny . lets go to the muffler shop tomorrow and have them weld in a H-pipe.... I bet it would sound crazy and probably wouldnt cost more then 200$ lol.
just make sure to have them delete the cats and replace them with some piping
__________________
The original Hid angel eyes for sale now on ebay

User name lmims526894rou

Or contact me at chrism9551@aol.com
Appreciate 0
      02-20-2009, 03:31 AM   #31
Manny212
Captain
Manny212's Avatar
United_States
13
Rep
659
Posts

Drives: 2008 M3
Join Date: Apr 2007
Location: NY

iTrader: (3)

Send a message via AIM to Manny212
Quote:
Originally Posted by ///M PWR 00 View Post
Thanks Manny . lets go to the muffler shop tomorrow and have them weld in a H-pipe.... I bet it would sound crazy and probably wouldnt cost more then 200$ lol.
Definitely would not cost much and would probably be great. Gonna have to look into this
__________________

2008 E92///M3 - | Alpine White/Fox Red Extended Novillo | Technology | Premium | Cold |
Mods: | 19" Avante Garde | Macht Schnell Filter | RPi Scoops | Rogue SSK | MS Spacers | ACM Test Pipes | ESS Tune | Remus Race | LUX V4 Angels | KW V3 |
Appreciate 0
      02-20-2009, 03:52 AM   #32
Bluesummer
Lieutenant General
Bluesummer's Avatar
Taiwan
186
Rep
15,427
Posts

Drives: slower than Ayrton Senna
Join Date: Dec 2006
Location: Nürburgring, be there once, your heart, your soul will stay there.

iTrader: (13)

Garage List
2015 M4  [0.00]
2011 E82 135  [0.00]
2011 M3  [0.00]
2007 335  [0.00]
Quote:
Originally Posted by ///M PWR 00 View Post
Thanks Manny . lets go to the muffler shop tomorrow and have them weld in a H-pipe.... I bet it would sound crazy and probably wouldnt cost more then 200$ lol.
it shouldnt exceed $200. Dooo IT!
________
WIKI VAPORIZER

Last edited by Bluesummer; 09-07-2011 at 07:05 AM.
Appreciate 0
      02-20-2009, 04:25 AM   #33
The Shiekh
Second Lieutenant
The Shiekh's Avatar
United_States
3
Rep
267
Posts

Drives: E92 M3
Join Date: Jul 2008
Location: Danville, CA

iTrader: (1)

everyone stop saying 90wtq...
__________________
-James aka The Shiekh

2008 E92 M3 6MT SSII/Silver Novillo/Sycamore
BPU+ lol
Appreciate 0
      02-20-2009, 05:11 AM   #34
mixja
Captain
United_States
19
Rep
783
Posts

Drives: 2011 E90 DCT Silverstone
Join Date: Jun 2008
Location: Beverly Hils, CA

iTrader: (1)

Quote:
Originally Posted by FStop7 View Post
You are nuts if you think you're gaining 60-70ft-lb of peak torque on a 4.0L NA motor with those mods. That's a gain you'd see more like on a 335i going from stock to raised boost, etc. Even under the curve it would be really unlikely to see that kind of a torque gain on a small, high revving motor. For low end torque those would be more like gains you'd see on a Z06.
+1 - the only way you're going to get over 400lbft torque out of this engine without FI or displacement increase is changing cams that sacrifice top end power for torque...even then it would be a struggle and probably would only last for a few hundred RPM...

The dyno example is from two different dynos so can't compare those results whatsoever...
Appreciate 0
      02-20-2009, 03:23 PM   #35
gixxer_kidd
Major
31
Rep
1,404
Posts

Drives: e92 m3
Join Date: Dec 2008
Location: NNJ

iTrader: (11)

Garage List
2008 m3  [5.00]
Frankie, I've been thinking about doing an x-pipe but if you and Manny get this working, put me down for one of those ///M PWR h-pipes
Appreciate 0
      02-20-2009, 05:55 PM   #36
dogears
My master volume goes to 11
dogears's Avatar
9
Rep
424
Posts

Drives: 2009 Space Gray M3 Sedan M-DCT
Join Date: Dec 2008
Location: Cherry Hill, NJ

iTrader: (0)

The AA X-Pipe is open on the inside where the two sides meet. Therefore, it serves the exact same function as an H Pipe. The same thing...... If there is any difference at all, it is minimal.

I confirmed the X-Pipe design spec with AA just now.

The only potential differences would be price and quality. Not endorsing either as my M3 is arriving next week from the port and it is still a virgin.
Appreciate 0
      02-20-2009, 07:26 PM   #37
///M PWR 00
Captain
///M PWR 00's Avatar
40
Rep
938
Posts

Drives: Porsche
Join Date: Mar 2008
Location: Yonkers, NY

iTrader: (0)

Quote:
Originally Posted by dogears View Post
The AA X-Pipe is open on the inside where the two sides meet. Therefore, it serves the exact same function as an H Pipe. The same thing...... If there is any difference at all, it is minimal.

I confirmed the X-Pipe design spec with AA just now.

The only potential differences would be price and quality. Not endorsing either as my M3 is arriving next week from the port and it is still a virgin.
Thats great to know... thanks for checking with AA I was thinking of doing the same thing..... Im not calling AA liars but... X pipe and H pipe are not the same... Its not any different on a M3.. Im gonna try the H pipe.. worst case scenerio I wasted 200 bucks oh well... I actually think its gonna sound great and make a little power too. Like I said my main concern is a awesome sound right now
__________________
Appreciate 0
      02-20-2009, 07:29 PM   #38
///M PWR 00
Captain
///M PWR 00's Avatar
40
Rep
938
Posts

Drives: Porsche
Join Date: Mar 2008
Location: Yonkers, NY

iTrader: (0)

Quote:
Originally Posted by gixxer_kidd View Post
Frankie, I've been thinking about doing an x-pipe but if you and Manny get this working, put me down for one of those ///M PWR h-pipes

If it works out Im sure I can get the shop to fabricate these pipes for those who would be interested..... I bet the price would be a fraction compared to the competition...


IF ANYONE WANTS TO SELL STOCK MIDPIPES PLEASE PM ME!!!!

you would be doing the M3 community a huge favor as I would use the pipe to test out the different setups and save us all a bunch of money!!!!
__________________
Appreciate 0
      02-20-2009, 07:39 PM   #39
dogears
My master volume goes to 11
dogears's Avatar
9
Rep
424
Posts

Drives: 2009 Space Gray M3 Sedan M-DCT
Join Date: Dec 2008
Location: Cherry Hill, NJ

iTrader: (0)

Found on the web. Both designs do the same thing with minor difference.

X Vs. H Pipes
Now lets discuss the two main designs for mid pipes, H and X type. An H pipe gets its name because there is a piece of pipe that connects each side of the pipe that connects to the header collectors (hence the name H pipe). This pipe is supposed to help equalize the pressure and thereby create a better scavenging effect. An X pipe however, has each side of the pipe meet in an X type junction. Again the idea is to equalize pressure and create better scavenging.
As a general rule, H pipes allow for more low-end torque and slightly less Horse Power than X pipes do. Also, the sound note is quite different. The X pipe has a raspy sound while the H pipe is more muscle car sounding. As mentioned, the mid-pipe choice seems to be a personal sound preference and most people who use chambered mufflers opt for the H pipe, while the straight through users tend to choose the X pipe. Typically, the X
pipe/straight through muffler combination yields higher HP and lower torque than the H pipe/chambered muffler design.


Keep in mind that the AA design is not an X Pipe that is as open as this article refers . It is more like the H I believe. For me, a true X would really have the pipes be open at the "X" intersection. This explains the higher HP/lower TQ comment. By varying the X opening, I bet the X could replicate the H.



Quote:
Originally Posted by ///M PWR 00 View Post
Thats great to know... thanks for checking with AA I was thinking of doing the same thing..... Im not calling AA liars but... X pipe and H pipe are not the same... Its not any different on a M3.. Im gonna try the H pipe.. worst case scenerio I wasted 200 bucks oh well... I actually think its gonna sound great and make a little power too. Like I said my main concern is a awesome sound right now
Appreciate 0
      02-20-2009, 07:42 PM   #40
gthirtyfizle
Colonel
gthirtyfizle's Avatar
88
Rep
2,808
Posts

Drives: E92 M3 AW
Join Date: Jul 2008
Location: NYC

iTrader: (4)

I might try this as well. Im installing my pulleys tom and my guys main thing is this. He actually loves making his own shit. He wanted to make a custom x pipe for me deleting sec cats and resonators, but I kept stalling since I thought the sound would be too loud. I think del the sec cats but keeping the res is the way to go, along with this h pipe instead of x. I might give it a try. do you guys suggest using 3" piping or 2.5?
Appreciate 0
      02-20-2009, 07:42 PM   #41
Blip Bavarian
salivator
Blip Bavarian's Avatar
United_States
8
Rep
524
Posts

Drives: 991 C2S & E30 LS1
Join Date: Dec 2007
Location: El Paso, Texas

iTrader: (0)

Quote:
Originally Posted by ///M PWR 00 View Post
If it works out Im sure I can get the shop to fabricate these pipes for those who would be interested..... I bet the price would be a fraction compared to the competition...


IF ANYONE WANTS TO SELL STOCK MIDPIPES PLEASE PM ME!!!!

you would be doing the M3 community a huge favor as I would use the pipe to test out the different setups and save us all a bunch of money!!!!
dont quit your day job just yet. we need dynos...
__________________
Appreciate 0
      02-20-2009, 08:50 PM   #42
///M PWR 00
Captain
///M PWR 00's Avatar
40
Rep
938
Posts

Drives: Porsche
Join Date: Mar 2008
Location: Yonkers, NY

iTrader: (0)

Quote:
Originally Posted by gthirtyfizle View Post
I might try this as well. Im installing my pulleys tom and my guys main thing is this. He actually loves making his own shit. He wanted to make a custom x pipe for me deleting sec cats and resonators, but I kept stalling since I thought the sound would be too loud. I think del the sec cats but keeping the res is the way to go, along with this h pipe instead of x. I might give it a try. do you guys suggest using 3" piping or 2.5?
He would know better for 2.5 or 3" - I personally dont know which would be a better setup but please let me know what you end up doing. What shop are you talking about btw?

Quote:
Originally Posted by Blip Bavarian View Post
dont quit your day job just yet. we need dynos...
Dont hold your breath if your waiting for 90wtq.. But I think a nice clean sound and some extra power is def possible. Fabbing up the stock pipes shouldnt cost more then 200$ at the most.
__________________
Appreciate 0
      02-20-2009, 09:04 PM   #43
Cab5er
Colonel
Cab5er's Avatar
China
33
Rep
2,340
Posts

Drives: 09 E90 M3 (Sold) 13 A1
Join Date: Feb 2007
Location: Fremont, Hainan

iTrader: (22)

Quote:
Originally Posted by ///M PWR 00 View Post
If it works out Im sure I can get the shop to fabricate these pipes for those who would be interested..... I bet the price would be a fraction compared to the competition...


IF ANYONE WANTS TO SELL STOCK MIDPIPES PLEASE PM ME!!!!

you would be doing the M3 community a huge favor as I would use the pipe to test out the different setups and save us all a bunch of money!!!!
DOOOOOOOOOOOOOOOO it!
__________________

E90 ///M3/ AW/ Fox Red
Appreciate 0
      02-20-2009, 09:11 PM   #44
gthirtyfizle
Colonel
gthirtyfizle's Avatar
88
Rep
2,808
Posts

Drives: E92 M3 AW
Join Date: Jul 2008
Location: NYC

iTrader: (4)

Quote:
Originally Posted by ///M PWR 00 View Post
He would know better for 2.5 or 3" - I personally dont know which would be a better setup but please let me know what you end up doing. What shop are you talking about btw?



Dont hold your breath if your waiting for 90wtq.. But I think a nice clean sound and some extra power is def possible. Fabbing up the stock pipes shouldnt cost more then 200$ at the most.
The shop I go to is revolution. Its in queens. Been around for a while but not known for doing this type of work since its always been more of a radio/electronics installation place. But for a while now they moved into a new shop which has 2 lifts and the mechanic that works there is sick. Young dood. All he does is build cars. The work he does is incredible, all custom. Which is why he will be doing all my work. So far he installed my springs and now pulleys. He also removed the clutch spring for me in like 21 seconds lol.
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 09:28 PM.




m3post
m3post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST