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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Tracking, Autocrossing, Dragstrip, Driving Techniques > 335is Track Mods



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      08-18-2013, 01:36 AM   #1
Karura
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335is Track Mods

Hi,

Just finished my first track day and I had lots of fun. Ran into limp mode on the 4th run, because I was driving hard and shifting late, but overall it was a fun day.

What mods do I want if I want to do this more often?

I am thinking:

Performance friction brake pads
SS brake lines
Brake fluid


What about getting a bolt-in rollcage like the one VS Motorsports had?

I don't want to do suspension right now because I want to go with M3 bits later, and that would require me to get M3 shocks.


Any brands/mods/suggestions are good!
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      08-18-2013, 02:42 AM   #2
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Since you don't want to do suspension, I say braking and cooling. Might want to change your rotors too, BMW rotors are soft. Definitely get an intercooler, especially if doing multiple runs.
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      08-18-2013, 09:07 AM   #3
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I'd prioritize stopping power first. High-temp brake fluid and upgraded pads. I use this fluid in my car: http://store.vacmotorsports.com/tota...115-p1790.aspx

Cooling, you'll want to do an FMIC. I have an ETS 5" model and have yet to have a limp mode (though I am N55 engine).

Lastly, tires; Michelin Pilot Super Sport is the king of street tires right now.

Good luck.

P.S. you won't be able to fit M3 dampers on your car without significant modification (read: not worth it).
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      09-10-2013, 12:07 AM   #4
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high performance pads
racing brake fluid
road legal track tyres

I would only go for more cooling based on your local climate. For cooler climates the stock IC/OC/radiator are fine.

Don't shift so late, you're out of your optimal hp/trq point and just stressing/heating the engine at that point for no gain.
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      09-10-2013, 02:39 AM   #5
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Like the others said, cooling cooling and braking.

Our cars suffer with both on track. not too hard to fix though...
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      09-10-2013, 12:41 PM   #6
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I am taking my 2013 335is on the track for the first time. I have a Dinan Stage 2 and free flow exahust mods. anything I should be thinking about as well? i see lots of brakes mods
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      09-10-2013, 06:01 PM   #7
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Quote:
Originally Posted by joepants23 View Post
I am taking my 2013 335is on the track for the first time. I have a Dinan Stage 2 and free flow exahust mods. anything I should be thinking about as well? i see lots of brakes mods
The bare minimum is high performance pads and racing brake fluid. You'll put a lot of wear on your road tyres too, depending on the track.
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      10-10-2013, 12:34 PM   #8
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What do you guys recommend as far as double duty pads? You really dont think the stock rotors could hold up? Thanks.

Karura- how was your stock suspension handling the turns? I find my oem stuff to be quite soft(rebound).

Was considering the ER sports cooler, do you think kits any better than the AR design add on cooler?
PS- do not mean to thread jack, just want to contribute.


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Last edited by yomny; 10-10-2013 at 12:45 PM.
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      10-10-2013, 12:48 PM   #9
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I run racingbrake XT910 pads on ECS slotted geomet rotors (essentially stock) with Castrol SRF fluid. I boiled RBF600 on my first track outing and decided to go all out.

With this setup and no additional cooling, I never run out of braking power, but do get pad smear near the end of my more spirited sessions, but that goes away when I step it down. I'm building a cooling system to address that but otherwise I don't currently have braking issues. If I get a lot faster, I might need to get more aggressive with my pad selection (mine is a hybrid street/track pad out of convenience).
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      10-10-2013, 12:52 PM   #10
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FWIW I prefer replacing the existing core if you have one due to less pressure drop and complexity overall. But I don't really have anything bad to say about the AR setup.

I will say all oil cooler kits for this platform are stupidly overpriced.
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      10-10-2013, 01:10 PM   #11
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Thanks for the feedback man. I was thinking Hawk HPS, im not an aggressive driver at all, i yet have much to learn about road course driving. I had ferodo ds2500 on my STi and well those were great but not on the street. If i have to do a sreett setup and a track setup i wont mind but i rather not. I'll check out the ones you have. Thanks.
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      10-10-2013, 02:37 PM   #12
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You bet. Keep me posted and good luck!
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      10-11-2013, 06:44 AM   #13
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Quote:
Originally Posted by yomny
Thanks for the feedback man. I was thinking Hawk HPS, im not an aggressive driver at all, i yet have much to learn about road course driving. I had ferodo ds2500 on my STi and well those were great but not on the street. If i have to do a sreett setup and a track setup i wont mind but i rather not. I'll check out the ones you have. Thanks.
I put those hawk hps brake pads with motul 600 fluid and ecs stainless steel lines. I thought it ran pretty smooth in poconos. It was also my first time on the track. I didn't have any problems with cooling.
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      10-11-2013, 07:40 PM   #14
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Quote:
Originally Posted by joepants23 View Post
I put those hawk hps brake pads with motul 600 fluid and ecs stainless steel lines. I thought it ran pretty smooth in poconos. It was also my first time on the track. I didn't have any problems with cooling.
Thanks, good to know. I dont want to go too crazy on pads since i dont track too often but i do enjoy it.
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      10-12-2013, 01:55 AM   #15
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Quote:
Originally Posted by yomny View Post
What do you guys recommend as far as double duty pads? You really dont think the stock rotors could hold up? Thanks.

Karura- how was your stock suspension handling the turns? I find my oem stuff to be quite soft(rebound).

Was considering the ER sports cooler, do you think kits any better than the AR design add on cooler?
PS- do not mean to thread jack, just want to contribute.

The AR design kit is way undersized for the track! Get the ER sports Kit and you'll be fine. Trust me, I've tried both
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      10-12-2013, 09:13 AM   #16
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Quote:
Originally Posted by Autobahn335i View Post
The AR design kit is way undersized for the track! Get the ER sports Kit and you'll be fine. Trust me, I've tried both
Thanks, i considered the AR because the ease of installation but it really makes no sense to have an extra cooler with the oem stacked, simply adds more oil. I guess ER it is. Thanks for the feedback.
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      01-08-2014, 07:29 PM   #17
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Quote:
Originally Posted by ashmostro View Post
FWIW I prefer replacing the existing core if you have one due to less pressure drop and complexity overall. But I don't really have anything bad to say about the AR setup.

I will say all oil cooler kits for this platform are stupidly overpriced.
Quote:
Originally Posted by Autobahn335i View Post
The AR design kit is way undersized for the track! Get the ER sports Kit and you'll be fine. Trust me, I've tried both
Quote:
Originally Posted by yomny View Post
Thanks, i considered the AR because the ease of installation but it really makes no sense to have an extra cooler with the oem stacked, simply adds more oil. I guess ER it is. Thanks for the feedback.
I know this totally reviving a dead thread, but I have a legit question on oil cooler options for the 335is. So I'll ask it here instead of starting a whole new thread:

The 335is already comes with an upgraded oil cooler. Is there any product that supplements that oil cooler, or do you have to gut the stock and install a whole new system for track work? From the sounds of this conversation, it seems the AR oil cooler supplements the stock one. Why would this not work for track days?
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      01-08-2014, 08:05 PM   #18
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Bump, would like to know ^ too. Good question.
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      01-08-2014, 08:51 PM   #19
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Kind of odd... it seems the question was answered with three different perspectives already- and that was quoted by the person that just asked.....?
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      01-09-2014, 08:58 AM   #20
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If I'm not mistaken the 335is doesn't haven an oil cooler any different than the regular 335i. It has an additional smaller radiator and a heavy duty radiator fan but the oil cooler is like any other. The point of not adding another cooler is to be efficient and not redundant. Instead of having two average units, you replace it by one good one.
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      01-10-2014, 04:07 PM   #21
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Quote:
Originally Posted by yomny View Post
If I'm not mistaken the 335is doesn't haven an oil cooler any different than the regular 335i. It has an additional smaller radiator and a heavy duty radiator fan but the oil cooler is like any other. The point of not adding another cooler is to be efficient and not redundant. Instead of having two average units, you replace it by one good one.
Yeah, that's what I don't get. Why is having a secondary and primary oil cooler not as efficient as simply having one bigger oil cooler? Does the oil not equally flow through both oil coolers when you have the dual setup?
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      01-10-2014, 05:01 PM   #22
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Why have the added complexity? Why cover up the primary radiator with yet another secondary oil cooler, thereby making the radiator less efficient? Why have additional pressure loss associated with more complex plumbing and restrictions?
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