12-06-2010, 08:47 AM | #1 |
Registered
2
Rep 4
Posts |
official 5.0i exhaust on 3.5i. is it possible ..?
hej everybody.
In 2 weeks or so im going to the bmw dealer to order the 3.5i. But is it possible to order the 5.0i exhaust by the dealer or do i need to purcase and install it afterwards...? does anyone have any idea..? I'm going to the bmw dealer in Amsterdam or de beier in Heerenveen. |
12-06-2010, 11:05 AM | #3 |
Captain
92
Rep 608
Posts |
|
Appreciate
0
|
12-06-2010, 01:34 PM | #5 |
Captain
92
Rep 608
Posts |
look at my link......you answer is right there
|
Appreciate
0
|
12-06-2010, 01:38 PM | #6 |
Registered
2
Rep 4
Posts |
|
Appreciate
0
|
12-06-2010, 01:50 PM | #7 |
Captain
92
Rep 608
Posts |
I am in New York dude....i dont know how things work over there...you have the link...you need to do the rest of the homework yourself
cheers |
Appreciate
0
|
12-06-2010, 07:50 PM | #8 |
Private First Class
2
Rep 126
Posts |
Possible? Yes. Can you get your dealer to do it? Depends on your relationship with your dealer.
You can't just yank off your 35i tips and slap on the 50i. You'll need the 50i pipes. There are two problems you will run into 1) the openings through the bumper on the 35i aren't large enough for the 50i pipes. You'll have to bore them out. 2) the 35i has a valve on one side of the car that keeps one side closed except during high pressure. Keeping both sides open will noticeably alter the sound of the i6 exhaust. Some people also complain of a loss of low end torque, but theoretically it shouldn't affect a FI engine... at least not to my understanding. |
Appreciate
0
|
12-11-2010, 10:38 AM | #11 | |
Private
5
Rep 81
Posts |
Quote:
|
|
Appreciate
0
|
12-11-2010, 02:40 PM | #12 | |
Enlisted Member
3
Rep 36
Posts |
Quote:
element along the exhaust pipes are made to reduce noise and pollution. If the X6M have no the two valves cannot enter Swiss for example. |
|
Appreciate
0
|
12-15-2010, 10:14 AM | #13 |
Second Lieutenant
10
Rep 283
Posts |
This is the picture of the parts you need for the 50i tip and the part number is 18-30-2-154-632
__________________
Free supercharging miles using my referral code.
https://ts.la/joe27827 |
Appreciate
0
|
12-25-2010, 11:30 AM | #14 |
Registered
0
Rep 4
Posts |
|
Appreciate
0
|
12-25-2010, 08:08 PM | #15 | |
Private First Class
2
Rep 126
Posts |
Quote:
As far as it being there to control back pressure, you may be right. I am no expert, but I don't know if that's as important in a FI engine. The way that I understand it, in a NA engine you want to control the sudden release of exhaust gases so that you don't slow it down enough to interfere with the next cycle. If the volume of space the gases have to fill is too large the gas will slow down causing back pressure and a loss of power. This is more likely to occur under low RPM. However, in a FI engine, the turbo results in a steadier stream of gases from the engine, and since the turbo uses the differential in pressure to produce boost the lower the back pressure the more efficiently the turbo can operate. Thus for a FI engine freer flowing is almost always better. There was an interesting post here awhile back about this mod and its effect on performance. http://www.xbimmers.com/forums/showthread.php?t=341367 Last edited by Ikendiken; 12-25-2010 at 08:15 PM.. |
|
Appreciate
0
|
01-03-2011, 09:24 AM | #16 |
First Lieutenant
25
Rep 333
Posts |
I tried that golf-tee mod several weeks ago.
i am not too sure if there is any performance loss. I couldn't feel it. But the car sure became louder. Personally, I had a modified sports car before, so I am kind of tired of the noise, so I reverted it back. I am fine with the valves, but I really hate it when smoke comes out only on one side. People on the street think my other pipe is fake If change to the OEM 50i tip, does it remove the valve as well? If so, will the car sound like after golf-tee mod? |
Appreciate
0
|
01-16-2011, 04:12 PM | #17 | |
Registered
0
Rep 4
Posts |
Quote:
The problem I see with removing the flap and also other modifications done by casual operators with knowledge gained from internet boards are that the original design intent is not fully understood (even though this is rather minor). To certain extent, I can empathize because even as a mechanical design engineer, I can't fully understand some features in legacy designs. However, I always give them (the OEM engineers) the benefit of the doubt initially. This thread, however, appears like an aesthetic issue rather than performance because I don't see a performance nor economical benefit in "upgrading" to a 50i exhaust. |
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|