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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 > ESS or COBB for a 335IS?



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      02-28-2013, 10:15 AM   #23
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Quote:
Originally Posted by stupordave View Post
First drive on the COBB tune is complete. All I can say is WOW. Easy install, no error codes, and a noticeable improvement in power. Kicking myself for waiting a year to install a tune. One the linear throttle setting, the car drives smoother for around town and has more power than the tires can handle when you get on it. Money well spent.
Upgrade your intercooler if you own the car. If its a lease then Oh Well
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      02-28-2013, 10:26 AM   #24
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Quote:
Originally Posted by BuraQ View Post
Upgrade your intercooler if you own the car. If its a lease then Oh Well
It's mine. I had better start looking at options. Recommendations that require the least amount of modification?
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      02-28-2013, 10:28 AM   #25
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+1 cobb
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      02-28-2013, 01:31 PM   #26
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Stupordave,

Any idea what kind of numbers the 335is is putting down with stage1 cobb?
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      02-28-2013, 01:50 PM   #27
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Quote:
Originally Posted by Mike@N54Tuning.com
COBB or JB4 G5 ISO

Mike
Or both lol
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      02-28-2013, 02:44 PM   #28
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Quote:
Originally Posted by stupordave View Post
It's mine. I had better start looking at options. Recommendations that require the least amount of modification?
Whoever is going to install it will more than likely need some mild cutting.

Here is a photo slide of the cutting that need to be done
its best to provide the "PRO" installer this slide so they have an idea if they never worked specifically on an IS

Try to get an IC that has no more than a 0.6 PSI reduction

Also it would help, for adding more boost later with the Cobb AP, to get an IC that is close to 90%+ volume increase over the stock. This will be alomost two times the size of the stock. Most sellers do not mention this so its best to shoot them an email if you dont see it in their online specs.

Qualify the intercooler with the above first then we can move on to the final qualification

Intercooler core quality and design is also important. Usually, vendors buy the cores from a core manfacturer and just cloth them with a housing and side tanks etc for the specific car they will go on. If it gets too technical just make a new thread of the options you find so other may chime in. it may turn out to be a grudge match but you will learn from it

Keep in mind prepare to hear "cheaper" but have no idea about PSI reduction, volume sze, or core design and quality.

All intercooler are not the same. People who believe that just run after the cheapest thing they find inorder to up boost. You have a 60k car, dont treat it like a rice burner. Do it right.
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      02-28-2013, 02:53 PM   #29
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^^^^

Interesting post, but why do you recommend a 90% increase in volume over stock? Why not 80 or 100?
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      02-28-2013, 02:58 PM   #30
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You really need to be honest with yourself as to what your goals are when choosing an FMIC. If you are not going far into modifications there are quality 5” units that will bolt in as direct replacements for the factory unit with excellent IAT control. If you are thinking about more serious mods then a tune you will need to think of cutting the plastic to fit in a bigger unit.

I would agree that the cheapest is not necessarily the best choice but neither is the most expensive. Try to see what the core design cutaway relating to heat transfer looks like in any cooler you are looking at also the quality of welds, the shape of the end tanks & included plumbing.
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      02-28-2013, 03:59 PM   #31
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Quote:
Originally Posted by KennyPowers View Post
^^^^

Interesting post, but why do you recommend a 90% increase in volume over stock? Why not 80 or 100?
There is no 100+ % that is a "direct replacement" for the stock. Only 84% - 93% so if he wishes to get ProTune with Cobb later perhap, even turbo upgrades, his IC will easily accomidate the new power and still run efficient thus he doesnt have to buy another IC in the furture
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      02-28-2013, 04:07 PM   #32
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I guess my point was what data or theory was used to come up with 90%? What happens at 90% that doesn't happen at 80%?

And what fmic meet this threshold?
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      02-28-2013, 06:33 PM   #33
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I have a 2011 IS and went stage 2 pretty quick, but did get a stage 1 run in for comparison. Shoot me a PM if you want more info.

FMIC had a huge impact, stock the intake temps jumped over 160 degrees, but with a helix, the temps never went abovo 100

1 is stage stage 1 and 3 is stock. 100% stock car.

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James
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      02-28-2013, 07:04 PM   #34
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Quote:
Originally Posted by KennyPowers View Post
I guess my point was what data or theory was used to come up with 90%? What happens at 90% that doesn't happen at 80%?

And what fmic meet this threshold?
I used 90% as a standard guide being that the majority of the maintream N54 intercoolers are either just below or just above 90% percentage of volume increase over stock that will fit

More air volume + greater PSI reduction = better heat exhange coefficient / lower IATs = better timings

less air volume + less PSI reduction = not enough heat exhange per the increase of power / higher IATs = more timing pulls

So in other words we dont want to go too large nor too small with our tiny stock turbos.

Helix seems to be a good 1st candidate, or the HPF Intercooler

Last edited by BQTuning; 02-28-2013 at 07:13 PM..
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      02-28-2013, 07:40 PM   #35
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      02-28-2013, 07:59 PM   #36
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Quote:
Originally Posted by BuraQ View Post
I used 90% as a standard guide being that the majority of the maintream N54 intercoolers are either just below or just above 90% percentage of volume increase over stock that will fit

More air volume + greater PSI reduction = better heat exhange coefficient / lower IATs = better timings

less air volume + less PSI reduction = not enough heat exhange per the increase of power / higher IATs = more timing pulls

So in other words we dont want to go too large nor too small with our tiny stock turbos.

Helix seems to be a good 1st candidate, or the HPF Intercooler
Thanks for clarifying.

I understand why fmic are good for the car, I was simply wondering where you came up with 90% more volume.

My understanding would be that fmic don't force more volume of air into the car, but more oxygen dense air by lowering iat.

A larger core would simply be more resistant to heat soak and be able to cool more air. Negatives would be pressure drop bc the volume is large and slows down the air velocity going from the turbos into the intake manifold.

Please correct me if I am wrong.
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      02-28-2013, 08:19 PM   #37
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Quote:
Originally Posted by G8r3Series View Post
Stupordave,

Any idea what kind of numbers the 335is is putting down with stage1 cobb?
No idea but it will get squirrely on a flat road with the traction control off. You can feel it pull much harder as it gets into the RPMs. Like BurQ said, I spent some money on the car and not interested in ragging it out at this point so I'm still a bit hesitant to drive it too hard. Almost tempted to drop back to the Sport map for longevity since I don't have an upgraded IC.

Last edited by stupordave; 02-28-2013 at 08:26 PM..
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      02-28-2013, 08:41 PM   #38
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I use the Procede Rev3- the power is unreal. I also use meth for bonus fun. I'm not a mechanic and the install was a breeze.
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      02-28-2013, 11:10 PM   #39
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Quote:
Originally Posted by KennyPowers View Post
Thanks for clarifying.

I understand why fmic are good for the car, I was simply wondering where you came up with 90% more volume.

My understanding would be that fmic don't force more volume of air into the car, but more oxygen dense air by lowering iat.

A larger core would simply be more resistant to heat soak and be able to cool more air. Negatives would be pressure drop bc the volume is large and slows down the air velocity going from the turbos into the intake manifold.

Please correct me if I am wrong.
Pretty much we are on the same page just explained differently
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      03-01-2013, 03:29 AM   #40
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I have ESS on my FBO 335i and I am happy with it. No issues ever!

Unloading and loading of maps is 15 minutes with the flash reader/writer tool.

If I was to choose , I would simply go with the one that is closest to you.

There is no COBB where I live so the ESS is my only option.

ESS is one of those who have been in the 335i N54 world the longest if I am not mistaken. They used to deliver very agressive tunes in the early days , but now they marked only more mild tunes on their standard package online. That is maybe why people choose other tunes over them. Custom tunes is of course available there too. Im going there for a custom tune when I get new turbos and cylinder head. + meth
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      03-01-2013, 10:16 AM   #41
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Do you have the Vargas installed or on order?
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      03-01-2013, 10:59 AM   #42
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its on order , dont think any of us who have on order have got it yet. we are all waiting...
And my stage 3 head from VAC is also on order. My guess is that I will start the install this spring then drive to ESS in early summer and get the tune sorted.
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      03-01-2013, 11:32 AM   #43
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COBB!!
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      03-01-2013, 12:46 PM   #44
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Quote:
Originally Posted by tinnsoldaten View Post
its on order , dont think any of us who have on order have got it yet. we are all waiting...
And my stage 3 head from VAC is also on order. My guess is that I will start the install this spring then drive to ESS in early summer and get the tune sorted.
Sounds good, best of luck with the system.
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