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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 > Homemade FMIC (Even bigger than AA and HPF) for $300



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      09-05-2010, 04:18 PM   #111
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Wow. Very cool. Subscribed.
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      09-05-2010, 04:59 PM   #112
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i got my helix IC years ago so no regret there. GB price was already good and i got little extra bargain because i took the one my friend order and backed out on. anyways, props to big tom to finding out the new solution on IC to this community i'm sure there will be more people doing this from now on.
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      09-07-2010, 04:33 AM   #113
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Those Racecooling IC were done in sweden by copying an Helix and known to leak all over the place. You cannot compaire them to Helix as the core are not the same as well as the welds .
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      09-07-2010, 07:55 AM   #114
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Quote:
Originally Posted by Big Tom View Post
Here's a log through 2nd, 3rd and 4th gear.
Ambient temp was 62f, and the AIT is rock solid!

With my former aftermarket-IC (RaceCooling) the temp always went up from 70f ---> 90f during a similuar test. So im very pleased!

Hold on, you are looking at the effectivenss of an intercooler while running your water/methanol kit? Honestly, run the car with the water/meth off if you want to see how the intercooler is performing or you are really wasting your time.
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      09-07-2010, 09:41 AM   #115
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Quote:
Originally Posted by Former_Boosted_IS View Post
Hold on, you are looking at the effectivenss of an intercooler while running your water/methanol kit? Honestly, run the car with the water/meth off if you want to see how the intercooler is performing or you are really wasting your time.
Actually I can do a effectiveness test with meth activated since I have loads of logs with meth activated with my former aluminium IC. As long as the conditions are the same.
And I can easily see that this IC performs better.
So waste of time isn't the right expression in this case.

But of course I will do some logs with meth off when time permits.
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      09-07-2010, 10:04 AM   #116
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Quote:
Originally Posted by Big Tom View Post
Actually I can do a effectiveness test with meth activated since I have loads of logs with meth activated with my former aluminium IC. As long as the conditions are the same.
And I can easily see that this IC performs better.
So waste of time isn't the right expression in this case.

But of course I will do some logs with meth off when time permits.
I completely disagree. Unless you have identical ambient temperature and humidity then you have no means to really compare data from one run to the other. You are simply introducing tons of different variables that make it nearly impossible to attribute anything to one particular item. This is not testing in a controlled environment.

I am telling you this because I have tested multiple intercoolers and the data was incredibly contaminated using methanol. Unless you used a controlled procedure and no water/methanol then the test is of no value.
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      09-07-2010, 11:38 AM   #117
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Quote:
Originally Posted by Former_Boosted_IS View Post
I completely disagree. Unless you have identical ambient temperature and humidity then you have no means to really compare data from one run to the other. You are simply introducing tons of different variables that make it nearly impossible to attribute anything to one particular item. This is not testing in a controlled environment.

I am telling you this because I have tested multiple intercoolers and the data was incredibly contaminated using methanol. Unless you used a controlled procedure and no water/methanol then the test is of no value.
x2
I commend you (Big Tom) for thinking and performing out-of-the-box on this IC idea, but you still need to establish a baseline to see how much improvement is accomplished.
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      09-07-2010, 11:39 AM   #118
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Quote:
Originally Posted by Thumperx View Post
x2
I commend you (Big Tom) for thinking and performing out-of-the-box on this IC idea, but you still need to establish a baseline to see how much improvement is accomplished.
x3. Methanol is going to skew things in a big way.
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      09-07-2010, 11:42 AM   #119
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Quote:
Originally Posted by Big Tom View Post
But of course I will do some logs with meth off when time permits.
^
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      09-07-2010, 03:38 PM   #120
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Gah I can't wait to see the other logs. I wanna buy this asap pending those logs
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      09-07-2010, 06:50 PM   #121
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Quote:
Originally Posted by hamilton_wong View Post
I think alot of people would be very interested as well, as it would be one of the lowest price aftermarket intercoolers out there. Pending log results... Groupbuy?
Add up the totals for everything you need to install and I doubt it's the cheapest kit around.

Asking for a GB on something priced this low? Stick with ebay.
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      09-07-2010, 09:12 PM   #122
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Wow, that thing is huge!
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      09-07-2010, 09:59 PM   #123
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Wow, that thing is huge!
That is what she said.
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      09-08-2010, 06:24 AM   #124
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Is this a comparable DIY IC for those of us in north america? Also wondering whether I'd have to trim the shroud on this one too?

http://www.cxracing.com/mm5/merchant...ct_Code=IC0047

sorry if this breaks rule #8, still unsure whether that applies to just part vendors or not.
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      09-08-2010, 07:32 AM   #125
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Quote:
Originally Posted by scott_uw View Post
Is this a comparable DIY IC for those of us in north america? Also wondering whether I'd have to trim the shroud on this one too?

http://www.cxracing.com/mm5/merchant...ct_Code=IC0047

sorry if this breaks rule #8, still unsure whether that applies to just part vendors or not.
That IC is identical to the AA IC (18"x12"x3.5" = total core size 12364 cm3). And it will require you to trim the shroud away.
It's due to the increased height.

Mine is 18"x12"x4" = total core size 14170 cm3, which makes it 1806 cm3 bigger. Have that in mind.

Last edited by Big Tom; 09-08-2010 at 08:29 AM.
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      09-08-2010, 08:12 AM   #126
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Quote:
Originally Posted by Big Tom View Post
That IC is identical to the AA IC (18"x12"x3.5" = total core size 12364 cm3). And it will require you to trim the shroud away.
It's due to the increased height.

Mine is 18"x12"x4" = total core size 14170 cm3, which makes it 1806 cm3 bigger. Have that in mind.
I've been searching around for B&P 18"x12"x4" core size but I still couldn't find it in US side...
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      09-08-2010, 08:28 AM   #127
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Quote:
Originally Posted by JsTech View Post
I've been searching around for B&P 18"x12"x4" core size but I still couldn't find it in US side...
I think a 3.5" IC is good enough.

I rechecked the size of the AA IC again, and it's actually smaller than the 3.5" IC.
AA is only 16.93"x11.42"x3.5" = total core size 11085 cm3.
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      09-08-2010, 03:36 PM   #128
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Does the weight of this beast not factor into performance on the front end? I am not sure what these things weigh compared to factory or even the smaller IC like the ETS version, which I like because of the given stats in performance and size. I guess I should not assume that larger will always be heavier.

Cheaper may not be always the better solution. Product quality and durability do factor in based on my opinion.

I also noticed that ETS seems to be the only IC out there that corrects other problems with factory IC like the elbows and piping type. While I have not bought an IC yet and No I am not getting paid from ETS to promote their product, I am paying very close attention to what the ideal product should be.
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      09-08-2010, 03:51 PM   #129
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Coming from the Subaru world, the "ebay" intercoolers almost always perform very similar to the more expensive counterparts. Fitment is not always spot-on, but there is very little concern for lack of performance. Plenty of guys making 400+ and even 500+ whp with inexpensive cores.

BTW, for those interested in trying to find the identical 4" thick core, keep in mind that there are significant diminishing returns on going to a thicker core. You will gain more cooling ability by gaining your volume in front area dimensions rather than core thickness.
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      09-08-2010, 03:56 PM   #130
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Exclamation Please log without meth.

Quote:
Originally Posted by Former_Boosted_IS View Post
I completely disagree. Unless you have identical ambient temperature and humidity then you have no means to really compare data from one run to the other. You are simply introducing tons of different variables that make it nearly impossible to attribute anything to one particular item. This is not testing in a controlled environment.

I am telling you this because I have tested multiple intercoolers and the data was incredibly contaminated using methanol. Unless you used a controlled procedure and no water/methanol then the test is of no value.

+10,000. Seriously, if you want to TEST THE INTERCOOLER set your boost to say 13psi and run a full pass 1st - 4th while logging IAT. Perhaps that FMIC will perform well and there are many of us that are hoping it does; however, it makes absolutely no sense to test with the meth on.

As an example. Let's say you datalog and the IAT rises from 80* to 110* over a 4 gear pull. Then you have something to compare it to. It's hard enough to compare FMIC's based on the number of variables that aready exist... Ambient temps, boost, air intake, etc. Covering up the intercooler temps by spraying meth does the community no good. For that matter, almost the same could be said for a stock FMIC with the correctly dialed in methanol system.

Please, do us all a favor and run some logs without the meth flowing before you force me to buy one and do it...

Thanks!

John
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      09-08-2010, 03:59 PM   #131
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Quote:
Originally Posted by jblackwell View Post
+10,000. Seriously, if you want to TEST THE INTERCOOLER set your boost to say 13psi and run a full pass 1st - 4th while logging IAT. Perhaps that FMIC will perform well and there are many of us that are hoping it does; however, it makes absolutely no sense to test with the meth on.

As an example. Let's say you datalog and the IAT rises from 80* to 110* over a 4 gear pull. Then you have something to compare it to. It's hard enough to compare FMIC's based on the number of variables that aready exist... Ambient temps, boost, air intake, etc. Covering up the intercooler temps by spraying meth does the community no good. For that matter, almost the same could be said for a stock FMIC with the correctly dialed in methanol system.

Please, do us all a favor and run some logs without the meth flowing before you force me to buy one and do it...

Thanks!

John
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      09-08-2010, 04:09 PM   #132
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Quote:
Originally Posted by biz77 View Post
Coming from the Subaru world, the "ebay" intercoolers almost always perform very similar to the more expensive counterparts. Fitment is not always spot-on, but there is very little concern for lack of performance. Plenty of guys making 400+ and even 500+ whp with inexpensive cores.

BTW, for those interested in trying to find the identical 4" thick core, keep in mind that there are significant diminishing returns on going to a thicker core. You will gain more cooling ability by gaining your volume in front area dimensions rather than core thickness.
The front area on my IC is the absolute biggest who will fit behind the bumper. The reason for going for the 4" core is simply because the shop had two available choices, 3" and 4", and I chosed the thicker one just because I wanted to go for max.

And the result: The best from two worlds. Big and thick. (And cheap)
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