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      12-27-2006, 05:00 PM   #1
Driver72
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335i Intercooler...larger one??

So I've owned many turbo charged cars, my first car back in 1987 being one of them. I've been a fan of them for 2 decades and am so happy they've come as far as they have and there are so many choices in modifications and tuning for them now. Guess that's one great thing about electronic control now.

My question is....is there anybody working on making a larger intercooler for the 335i??

I don't know if there is clearance issues, but it seems a larger intercooler would be extremely helpful and beneficial in this car since the stock one has got to be one of the smallest I've seen.

Anybody have any insights into any tuner company making a larger one?

Thanks

Last edited by Driver72; 12-27-2006 at 09:40 PM..
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      12-27-2006, 05:26 PM   #2
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Quote:
Originally Posted by Driver72
So I've owned many turbo charged cars, my first car back in 1887 being one of them.
Wow, you sure are old and I didn't know they had turbo cars back in 1887? Wonder if President Cleveland had a turbo in his ride back then? lol just kidding around.

The only thing I saw about an upgrade to the intercooler is here
http://forums.bimmerforums.com/forum...ht=intercooler
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      12-27-2006, 06:55 PM   #3
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Quote:
Originally Posted by Driver72
So I've owned many turbo charged cars, my first car back in 1887 being one of them. I've been a fan of them for 2 decades and am so happy they've come as far as they have and there are so many choices in modifications and tuning for them now. Guess that's one great thing about electronic control now.

My question is....is there anybody working on making a larger intercooler for the 335i??

I don't know if there is clearance issues, but it seems a larger intercooler would be extremely helpful and beneficial in this car since the stock one has got to be one of the smallest I've seen.

Anybody have any insights into any tuner company making a larger one?

Thanks
Just out of curiosity. What did you own in 87? I had an 87 Buick Grand National. What a beast! It's amazing I'm still alive. Just what a leadfooted inexperienced driver needs. Tons of horsepower and torque, but no brakes and handling.
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      12-27-2006, 07:12 PM   #4
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from my experience...larger intercoolers did nothing for hp gains...even at higher temps.....unless you upgrade to bigger turbos....usually the stock intercooler is meant to handle the stock turbos....even with increased boost on a stock turbo...larger was not necessary..

anybody want to switch out to bigger intercooler..and see if there are any increase in hp?....
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      12-27-2006, 07:23 PM   #5
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Turbonetics is looking into a Spearco Intercooler upgrade. Larger doesn't always mean better...what we are looking for are better flowing end caps and better heat dissipation from the intercooler core...
will keep you posted
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      12-27-2006, 09:49 PM   #6
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Thanks guys.
The only real reason I brought up a larger (better) intercooler is simple.
I've heard about overheating issues in the first 335i coupes, and with chips like the Xede pushing more boost, heat soak is bound to flare it's ugly head with the little intercooler that's on our cars now.

I recently came from the Subaru and Mitsu crowd and I know that many guys with regular WRX's and even STI's switched out to larger intercoolers and got great results allowing them to increase boost and keep temps down.

Hey Comeback, I didn't have as bitchin a car as you had back in 1987.
I LOVED the Buick GN (as did everybody else) back then.
They were out of my price range and a car my parents surely would not let me have.
I had a pretty cool car though, it was a Dodge Shelby Charger, with the 2.2 Turbo engine. Very quick car back then especially for a 15 year old who'd just gotten his learner permit a couple months prior.
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      12-28-2006, 03:28 AM   #7
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Quote:
Originally Posted by ahnh77
from my experience...larger intercoolers did nothing for hp gains...even at higher temps.....unless you upgrade to bigger turbos....usually the stock intercooler is meant to handle the stock turbos....even with increased boost on a stock turbo...larger was not necessary..

anybody want to switch out to bigger intercooler..and see if there are any increase in hp?....
I know on the SRT-4 it is common to gain 20+ HP with a switch to a larger more efficient intercooler with the stock turbo.
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      12-28-2006, 08:31 AM   #8
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Yeah, I didn't say it above, but 10-20 hp was common on WRX's and STI's too.
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      12-28-2006, 08:57 AM   #9
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I have modified a 2.0 sierra cosworth and one of the biggest gains was fitting a bigger intercooler, it made 25 more HP with the same boost pressure and turbos. Definatly worth a try.
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      12-28-2006, 11:37 AM   #10
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Size alone an efficient intercooler does not make. Try a Nitrous spray bar on ur IC. the radiator and cooling fans are also involved in cooling the engine.
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      12-28-2006, 11:07 PM   #11
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from a theoretical standpoint, a larger intercooler, more free flowing intercooler would allow more air to enter the cylinder, and thus more fuel would have to be added (via something like xede) to adjust for the larger amount of air. this would create a larger explosion and create more power.

problem is, BMW's stock intercooler is probably nicely freeflowing as is, so would the price of a so called "larger" intercooler be worth the gains? only time will tell.
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      12-28-2006, 11:39 PM   #12
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I own a 2004 SRT4 and a 335, and a large intercooler for the SRT4 from Spearco will run you at least $800. Can you even imagine how much it will cost for our BMWs???? It has been proven that on almost all SRT4s tested with the stock turbo, it only made minimal gains. Like stated before, it will help with a turbo upgrade. I think that with xede and exhaust, this car is a freakin beast!! I would think that an intercooler sprayer would be alot more beneficary. Just my .02.
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      12-29-2006, 07:18 PM   #13
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Has anyone experienced any type of heat-soak with their 335? This would be a butt test for knowing whether a larger intercooler would help. I know my side mount on my 1.8T heat soaks in no time in the summer.

My experience would tell me your not going to gain hp but more likey keep the hp that the motor creates at lower temps.
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      01-01-2007, 02:29 AM   #14
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Damn dude, you are old !!!!!!!!
Wait, I forgot... I'm 9 hours older than you.... damn........

Well, if anyone is going to get something done for the car, it's Turner Motorsports. So, lets sit back and see what they do and what comes of it.

Here in So Cal, on those hot summer days, a bigger FMIC will help, for sure.

kj
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      01-01-2007, 12:44 PM   #15
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^^ +1 anything worth having TMS will have IMO.
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      01-01-2007, 12:49 PM   #16
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Quote:
Originally Posted by 2007/335i/coupe
Wow, you sure are old and I didn't know they had turbo cars back in 1887? Wonder if President Cleveland had a turbo in his ride back then? lol just kidding around.

The only thing I saw about an upgrade to the intercooler is here
http://forums.bimmerforums.com/forum...ht=intercooler
You guys are just too funny sometimes.
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      01-01-2007, 12:50 PM   #17
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Turner does some great stuff, but I doubt that, apart from a turbo upgrade, there is going to be a huge need for it. If heatsoak was a big concern, I think Vishnu would have mentioned it early on in his testing.

You cant compare the BMW to the audi 1.8s or SRT-4s or STis. All of those cars have small displacement, low compression motors running much higher boost numbers. Realize the IC only removes the heat in the air from compressing it in the turbo (the fact that the turbo is attached to the exhaust doesnt transfer that much heat). The 335 isnt compressing the air *that* much.
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      01-01-2007, 01:42 PM   #18
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Quote:
Originally Posted by RichP
Turner does some great stuff, but I doubt that, apart from a turbo upgrade, there is going to be a huge need for it. If heatsoak was a big concern, I think Vishnu would have mentioned it early on in his testing.

You cant compare the BMW to the audi 1.8s or SRT-4s or STis. All of those cars have small displacement, low compression motors running much higher boost numbers. Realize the IC only removes the heat in the air from compressing it in the turbo (the fact that the turbo is attached to the exhaust doesnt transfer that much heat). The 335 isnt compressing the air *that* much.
+1... exactly...
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      01-03-2007, 07:40 AM   #19
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Good call!!!^^^
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      01-03-2007, 08:09 AM   #20
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Quote:
Originally Posted by Driver72
So I've owned many turbo charged cars, my first car back in 1987 being one of them. I've been a fan of them for 2 decades and am so happy they've come as far as they have and there are so many choices in modifications and tuning for them now. Guess that's one great thing about electronic control now.

My question is....is there anybody working on making a larger intercooler for the 335i??

I don't know if there is clearance issues, but it seems a larger intercooler would be extremely helpful and beneficial in this car since the stock one has got to be one of the smallest I've seen.

Anybody have any insights into any tuner company making a larger one?

Thanks
If simply installing a larger volume intercooler without other alterations such as more turbo boost may result in more significant turbo lag. I would like to have a more efficient intercooler, not necessarily a larger one, and also more efficent connecting silicone pipes.
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      01-03-2007, 06:02 PM   #21
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so far it doesn't look like a "larger" intercooler is necessarry for the low boost pressures the 335 is pushing. Turbonetics and Spearco are looking to upgrade the IC with a more efficient core, end caps and couplers.

The more efficient core will transfer more heat away from the compressed air quicker providing denser A/F mixtures which will keep knock down and increase power output.

BTW: turbos transfer tremendous amounts of heat, including these little mitsu's, regardless of where they are located.
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      01-03-2007, 06:12 PM   #22
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You guys are probably correct, for the stock turbos, the intercooler is probably sufficient with just 8.5 psi's pushing through them.

However, I was thinking more along the line of when you install the Xede or similar.
Pushing 10+ psi into 3 cylinders each has got to produce quite a bit more heat and is actually quite a bit of boost for 1.5 liters in each of 3 cylinders.

It would be interesting to see if some manufacturer does make a larger or more efficient intercooler for this car. Bumping up the boost then would surely keep it cooler and ward off heat soak in 100+ degree hot summer days here in the southwest.

Maybe by summer someone will have a nice easily swappable intercooler.
We'll see.
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