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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Bmw 335i Coupe Twin Turbo Upgrade



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      12-21-2006, 10:47 PM   #45
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I would be very interested in following your project E92. I might be able to pull a few of your ideas if it can be applied to my "tame" 335i
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      12-22-2006, 02:19 AM   #46
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The first thing you need to do with this engine if you want big boost is to drop the compression ratio. Custom pistons are probably the easyest way to do this, and you can put in some stronger conrods while you are at it. A swap to an M3 iron block may be a good idea as well. Not sure if the 335 head will fit it, you may need a whole M3 engine. Add a big Turbonetics turbo and huge intercooler, and you will be cooking. The transmission should be good for a lot more power, as long as you dont put big slicks on the car.
An LSD or locker and a good clutch should be all you need.
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      12-22-2006, 10:28 AM   #47
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Rather than swapping all the entire drivetrain for an S54 or something, why not look into sleeving the block? Aluminum is not incapable of taking abuse but the strength of the cylinder liner is key. Look at how the Honda guys make huge power in their aluminum block engines. They don't have overheating or warping issues if built well. Changing pistons may not be quite as easy as usual because I believe the piston crown is specially shaped for the injector placement but I guess you could replicate the stock piston but with a few thousandths taken off to increase chamber volume.
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      12-22-2006, 01:42 PM   #48
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Quote:
Originally Posted by sflgator
I say the OP should probably not take delivery on the 335i, and wait for the $60k '08 M3 (w/ 415+HP stock) or an M6; then he can spend another $10k-$15k for a Supercharger or TT setup, and anything else he can think of, to make a SuperMonster M3 making some insane amount of HP, like 650-700HP. Or, even better yet...has anyone ever seen that online video of the guy (here in Miami, I think) who just spent A LOT of $$ to tune his new Ford GT; he added a TT and a bunch of other major mods, and that thing now makes ~ 1,000HP? That crazy SOB actually runs around street racing other heavily modded cars AND motorcycles!!! Anyways, the guy is nuts and loaded...$$ was defintely no object.

But, I guess the OP he must be thinking about $$ afterall, since he's getting a $45k-$50k 335i and wanting to add bigger turbos...maybe he feels he would be getting the most bang for his buck with the 335i and modding that as opposed to another M3.

Whatever he does with his 335i, I just hope I don't see him on the FL Turnpike or I95...I don't think I'd be interested in racing him with my "wimpy" Xede-equipped 335i.
THe Ford GT you mentioned is here in Jacksonville and money is no problem...His Lambo and Sl were also very nice toys...I seem to recall him saying something to the effect of "making a car faster is money well spent"...
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      12-22-2006, 02:08 PM   #49
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Quote:
Originally Posted by mr2guy
Rather than swapping all the entire drivetrain for an S54 or something, why not look into sleeving the block? Aluminum is not incapable of taking abuse but the strength of the cylinder liner is key. Look at how the Honda guys make huge power in their aluminum block engines. They don't have overheating or warping issues if built well. Changing pistons may not be quite as easy as usual because I believe the piston crown is specially shaped for the injector placement but I guess you could replicate the stock piston but with a few thousandths taken off to increase chamber volume.
The technical description of this engine tells us it has 'cast liners' but it doesnt say what they are made of. it is possible they are iron, but i am not sure. this cuttaway of the cylinder block is a good pic, it shows there is quite a lot of metal arround the cylinders, I would say the block may take a fair bit of pounding after all...
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      12-22-2006, 03:50 PM   #50
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awh the exhaust gaskets are but rings... anyone want to send me their stock turbo manifolds haha. Ill get the exhaust flanges made so we can get some new manifolds in progress... or should i say new manifold.

I too want to see one larger turbo on this car, spoolup shouldnt be much of a issue given the displacement. A GT3582R would spool nice on that engine. Then you add a clean 3" stainless downpipe to a 3" aluminum cat-back exhaust and your rockin!

With the direct injection i think the higher compression is ok since now the engine is much more efficient then we have ever been able to play with.
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      12-23-2006, 03:04 AM   #51
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This is my first post here but I have been reading and catching up on all the info about the e90 & e92.
I am also the military representative for Turbonetics. For those who don't know, Turbonetics is an industry leader when it comes to anything dealing with Turbochargers. They also own Spearco which is arguably the best made intercooler in the country.
All this leads me to this...
First off, we (Turbonetics) are looking into doing 335i upgrades to include: manifold and turbo upgrades, BOV's, and Intercooler w/piping upgrades.
I'll keep everyone updated as to the progress.
As far as upgrading the turbos, there is a definite advantage to upgrading the turbos, most of which come from the ability to reduce backpressure and the increased flow capacity will gain far greater hp numbers than the OEM chargers.
With Turbonetics angular contact ceramic ball bearings and new F1 turbine wheel, a T3 size turbo could be a good match for the s54 while minimizing "turbo lag" but no word on it as of now.
Anyway, feel free to throw any questions my way and look for 335 upgrades from Turboneticsinc.com in the future...
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      01-01-2007, 03:49 PM   #52
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If someone happens to get a photo from around the headers area that would be very helpful in evaluating if there is space enough for turbo / headers upgrade.
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      01-01-2007, 03:50 PM   #53
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Quote:
Originally Posted by bnj
If someone happens to get a photo from around the headers area that would be very helpful in evaluating if there is space enough for turbo / headers upgrade.
I don't think it has headers.
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      01-01-2007, 04:44 PM   #54
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I thought that's American English term for "exhaust manifold"...whatever...
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      01-01-2007, 04:49 PM   #55
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Quote:
Originally Posted by bnj
I thought that's American English term for "exhaust manifold"...whatever...
Some of us Americans are ignoramuses when it comes to car terminology.
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      01-05-2007, 12:50 AM   #56
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I also have the ambition of adding in some power once I receive my 335. My goal is to hit 11's. I can't afford the extra 15-20k for an M3. Just with a xede the car is going to hit mid-high 12's Would it possible to break 11's with just bolt-ons? What do you think it will take? or am I setting unrealistic goals?
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      01-05-2007, 01:16 AM   #57
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Quote:
Originally Posted by trekster
I also have the ambition of adding in some power once I receive my 335. My goal is to hit 11's. I can't afford the extra 15-20k for an M3. Just with a xede the car is going to hit mid-high 12's Would it possible to break 11's with just bolt-ons? What do you think it will take? or am I setting unrealistic goals?
It depends on what you want to spend beyond XEDE +exhaust, how long you want to wait for those numbers to arrive(aftermarket availability of bigger intercooler and turbos, custom tuning), and how much risk you want to take as far as warranty and engine longevity. I'm guessing that you'll have to be up another 50+whp beyond XEDE stage 1, and that is a black box as of now. I doubt that the new M3 will do 11's stock, so you have a lot of headroom pricewise with the 335i.
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      01-05-2007, 02:05 AM   #58
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Quote:
Originally Posted by trekster
I also have the ambition of adding in some power once I receive my 335. My goal is to hit 11's. I can't afford the extra 15-20k for an M3. Just with a xede the car is going to hit mid-high 12's Would it possible to break 11's with just bolt-ons? What do you think it will take? or am I setting unrealistic goals?
Xede with race gas Map, exhaust, drag radials/slicks with an LSD may not be too far off from what you are trying to achieve. Time will tell.
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      01-05-2007, 09:21 AM   #59
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You will be able to fit a new manifold and turbo, trust me. If anyone is for real about shoving that warranty down a 3 or 3.5" stainless exhaust downpipe lmk Id be willing to do most of the work for next to nothing. We can do any type of custom fabrication, but i cant do anything for a 335i without a car!!!

-Alex

Here is a picture of the stock setup, someone said they wanted to see?

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      01-15-2007, 04:11 PM   #60
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hey guys i'am new. from streetfire.net. All at of people think that this new 335i will be dyno queen. Sooner or later. I can't wait to see when turbonetics get there hands on 335i. Is there any othere companys plannig to make turbo kits?
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      01-15-2007, 09:15 PM   #61
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You can probably bet on Active Autowerkes coming out with something.
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      01-26-2007, 02:39 PM   #62
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I think its funny how people say that if you have the money to get a faster car then get one. I can afford any car that is made, and i own a 335 and a dodge srt4. I love the look of the two cars and the potnetial they have. The new 335 is one of the best looking cars that i have seen in a while, and i am going to mod my car and blow away almost every car. Just my .02
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      01-26-2007, 03:46 PM   #63
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If you could afford any car that is made why do you have a Neon and not a Veyron?
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      01-26-2007, 04:22 PM   #64
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What the hell can you do with that car? I like cars that i can have fun with and are more functional. And that is no bullsh*t. The Veyron is nice, but why have one, kind of like the million dollar enzo, you wouldnt even want to drive that car. And the "neon" is so much fun to drive. You put about $7,000 into it, and you are beating the shit out of damn near everything on the road. Thats what i like.
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      01-26-2007, 04:38 PM   #65
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Quote:
Originally Posted by sflgator View Post
What, a 380+HP/400+TQ 335i w/ the Xede seriously isn't enough for you? The Xede-equipped 335i will do 0-60 mph in ~ 4.1 - 4.5 sec. and the 1/4 mi. in ~ 12.5-12.8 sec.!!!! That's right there with $80k+ sports car speed.

Do you have your 335i yet? If so, you may want to come with our S. FL Xede group up to Riviera Beach on 12/17 and 12/18 when Shiv Vishnu himself will be installing the Xede Stage SubZero kits in our cars; he'll be tuning them and dyno'ing as well. If you're interested, PM me and I'll give you all the info so you can call Shiv, order your Xede and get set up to have it installed on your car as well.

Here's our thread by doctordel, who's coordinating the event with Shiv; you can also PM him of course...

http://www.e90post.com/forums/showthread.php?t=36416

btw - If you do something more than the Xede, like change out the 335i's small twin turbos for larger ones, you'd better be ready to add an LSD and further upgrade the suspension and wheels/tires, among other things. And, if that's the case, you might as well buy an M5 or M6 or wait for the '08 M3! btw - the "small" twin turbos are the reason for the lack of turbo lag; if you put large tubos on the 335i, yes, it would be faster, but you'll also have major turbo lag.
good point
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      01-26-2007, 09:20 PM   #66
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When do you think you would be able to upgrade the turbos on the 335i. Money is no matter. I just want to upgrade the turbos and have a lot of power.
Nice... i was chit chatting with a freind on what id do with a 335 as it can go upto par with a m5 or even better... why?

ITS TWIN TURBO.

i would start with as follows (if money was no object):
- Quafe for sure.
- Find the best turbo upgrade with the most boost that can run without a cel.
- run some intercoolers.
- turbo back.
- custom tuned chip.
- play with the boost to get a good boost level or manually control it for conditions.

These turbos are running at very moderate boost they can already by upped i think and thats probably one of the things the shiv chip may do.

As for the 08 M3... if it has no turbo... with the right mods the 335 would for sure beat the 08 m3.

good luck and as its been a while since you originally posted what have you decided on the larger turbo getting more power scenario.
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