I don't know about all of you, but my 335d might be a little too quiet. You can barely hear the whistle of the turbo and the exhaust is quite tame.
Has anyone heard a 335d with either intake or exhaust changes?
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I don't know about all of you, but my 335d might be a little too quiet. You can barely hear the whistle of the turbo and the exhaust is quite tame.
Has anyone heard a 335d with either intake or exhaust changes?
I haven't seen many intake or exhaust options for the 335d.
Closest thing to an intake mod I've seen, I have:
A K&N Filter. ;)
I would argue that under WOT, the audio is far from tame, however.
probably going to need to do some custom work, intake side, not much to do beside air filter i would think, and then exhaust, any muffler place can do acat back for you. post some pics of under the hood and lets see what we are working with :)
You are right. If I am honest, it is probably in intake that I would like more noise from. I would like to hear those turbo's spooling up!Quote:
Originally Posted by Ronin
It's not that simple with the exhaust. You're forgetting about the urea system back there, and how that complicates things dramatically.Quote:
Originally Posted by LostMarine
Under the hood coming tomorrow, when I actually have my DSLR on me. :P
not familiar at all with a urea system, got pics of that as well :)
nobody said it would be cheap :)
Urea system isn't easy to photograph. It's pretty much encompassed by body panels.Quote:
Originally Posted by LostMarine
This is the jist of what's going on there, though.
http://www.60-130.com/images/imported/2010/08/554.jpg
Awesome work- first photo I have seen of the urea system
It looks like the rear muffler could be replaced without impacting the setup.
You tube has some good exhaust clips of modded 330d's and they sound great with a high flow setup
Does anyone know if the 335d has the setup that opens a valve under full throttle like 335i
Awesome work- first photo I have seen of the urea system
It looks like the rear muffler could be replaced without impacting the setup.
You tube has some good exhaust clips of modded 330d's and they sound great with a high flow setup
Does anyone know if the 335d has the setup that opens a valve under full throttle like 335i
wow, much more intense than i imagined.. good luck on that one :)
With the 335d, both pipes are open full time, but it doesn't really matter, since there's really no exhaust sounds coming out of the ass end. It's all engine.Quote:
Originally Posted by dwink
Regarding the tips, I just painted mine, instead of replacing them. I think they look pretty good. (clip of exhaust sound and tips coming shortly).
http://www.60-130.com/images/imported/2010/08/600.jpg
http://www.60-130.com/images/imported/2010/08/601.jpg
http://www.youtube.com/watch?v=BZog8inFrJc
In europe these engines can go up to 350-380hp. It depends how much you want to push to its limit. The first issue will be the gearbox to handle the increased torque. Then, besides the increased heat from raising the boost, the turbos will facing a extra heat due to the DPF blocking and increased exhaust flow. this will lead to exhaust headers and turbos quickly wear. But with the stock longer gears, and now the 3rd gen having 7th gears, you don't need much effort from the engine to hit fast prohibited speeds.
As for the sound, my car has straight pipes from DPF to back. No muffler at all. It still is quieter and just increased a bit the exhaust tone with a small whistle sound.
Just find the first cat and chop off everything from in front of it. :D
do you have to refill the tank with DEF?
Yes. The DEF has its own tank - actually 2 tanks, one supplies the DPF actively, the second tank is passive "supply".Quote:
Originally Posted by DBFIU
I've heard modified exhausts on the d...just nothing in the states. I really, really, REALLY want someone to take my car and make something happen. I love the sound the engine makes, but to hear something coming out of the back end of the car would be MUSIC to my ears.Quote:
Originally Posted by Tiago
The other point of note is that BMW spent a very long time working on the acoustics of the engine to make it sound the way it does, so the exhaust note needs to compliment the engine note, else it will be a disharmonious mix, and a waste of time. I won't have my exhaust being all tinny and high with the deep throated baritone coming out of my engine bay when I'm WOT.
What about chip tunning? How much additional HP could be achieved from such engine http://www.dsautomobiles.com/sport-c...0touring/10/67 ?
Not familiar with that tuner but yes, greatest gains come from chip tuning as seen here: http://www.bimmerboost.com/showthrea...d-X5-35D-tunesQuote:
Originally Posted by Model
The biggest gain you will get would be from removing the DPF (besides a tune, of course) . Your mileage and power will both increase with this. But, you're driving a BMW, not a VW so I think it would be hard to pull these things without thinking about the resale.
I've been following a development of a E90 330d and without the DPF the car lose about 30-40hp. With DPF and tune it makes 300hp. This shows that these cars is so well developed to work with DPF that to take advantage with the removing you also need to upgrade other parts like turbo and who knows what else.
One of the more prominent flash tuners over here makes this flash for a 335d
before after difference
Power 210 kw 247 kw 37 kw
HP 286 hp 336 hp 50 pk
Torque 580 nm 710 nm 130 nm
at rpm 1750 tpm 1750 tpm 0 tpm
Topspeed 250 km/h 300 km/h 50 km/h
Edit: tables do not work here...
Attachment 5047
The DPF is thoroughly integrated with the CPU, so anyone taking off the DPF would need someone well versed in BMW computer code. I don't think it would be worth the cost or effort to do this.Quote:
Originally Posted by Ryan Mills
^ I agree. It's a shame that this is the case though. If there was a way to start from scratch and remove all of the restrictions in the exhaust, the engine would be even more efficient and powerful. The duramax and the Volkswagen guys make a substantial increase in power and economy when removing the DPF. Oh well. If someone wants more power than a tune can provide, there is always propane :)
Removing the DPF would make it pollute far more, right? So probably best to leave it in, wouldn't it?
Would like to see the gains with it removed but seems no one is capable of doing it.
why are you getting rid of it?
You continue to spam, you will be banned.Quote:
Originally Posted by troutangler
It really wouldn't pollute much more. All you're doing is burning the soot up with additional fuel, which adds pollution. (Why burn more fuel than you have too?) You're collecting and burning off the soot that otherwise would just come out of the exhaust. When I owned a TDI, it was kinda funny doing a burnout and having three lines on the ground, one from my exhaust turndown. :) From what I hear over on the smaller TDI's, the gains in economy and power are greater than 10%.
10% is a big chunk, worth looking into. Seems the problem is the ECU though, right?Quote:
Originally Posted by Ryan Mills
Someone wanna make an exhaust ;)
I'm there with you, man...been looking up and down for one, but it has to be one that matches the tone of the engine. It'd be a shame to drown out the beautiful sound coming from out front.Quote:
Originally Posted by Matt@Camber-Toe
If you're going to do it right, you sidestep the DPF altogether, but never expect to take the car to the dealer again, and you replace the full exhaust system, front to back.
Offering my car as a possible guinea pig. ;)
Can you contact me privately and let me know which tuner that is (unless I'm missing it completely), so that I can get in contact with them?Quote:
Originally Posted by DavidV
So it there any exhaust yet for a USA 2011 335d yet that is reasonable?
Im not sure about the 335d but there is a downpipe made for the 35d x5 with the tune - i may be going this route vs replacing both urea tanks because i have the codes on. $2k for the pipe and tune so its a good investment for solving the issues and gaining 60+hp on top of it with stage 1, 110hp with stage 2.
As long as the tune codes off the DPF regen and adjusts for the lack of back pressure, you should be fine. These are the most important parts of doing what you're talking about, otherwise the ECU will throw fits and you'll get SES left and right.