[Mark@Helix]

Announcing the Group Buy for the Helix Stepped Core Intercooler

We have 10 of these units in stock, so we are opening up a Group Purchase for the production run. The group buy will run from 2/23/09 to 3/23/09. Introductory pricing on the Helix FMIC is $679.00, this group purchase has some excellent discounts for tiered pricing. Now on to the most important thing the price.

0-4 purchasing participants = $650.00 *save $29.00*
5+ purchasing participants = $580.00 *save $99.00*

**Please Direct all inquiries to Eric or Ralph at Helix OR call the shop at 877-Helix-13**

Please Sign Up for this Group Buy:

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Helix R56 Stepped Core Intercooler





Prior to the 335i and the R56 Mini stepped core design you had the option to either go Taller or thicker with the cores. In my design process I measured the captive areas in the front of the bumper in both depth and height and went about designing an intercooler that took up all of this area. The end result is an intercooler with 53% more frontal area as well as 50% more core volume. now about the core, we were not constrained to an off the shelf core in regards to ambient and internal fin count as we custom spec'd the core to this application. the core in the Helix FMIC is a single unit stacked up to our specifications in regards to ambient and charge row height and internal and external fin count. since our core has more volume I could increase the internal fin count to remove more temperature and still meet the targeted air flow and pressure drop for this application. as you see by the AIT data logs the intercooler works amazingly well.



Endank design- all endtanks are not created equally, air likes to flow in a smooth curved radius as you can see the Helix FMIC has rounded endtanks that are cast.



Install:

Fits in stock location- YES
Requires no cutting,removal and/or permanent modification-Yes


Design:
More core volume than stock- Yes 50%
More Ambient face than stock- Yes 53%
More charge rows than stock(5)- Yes 12
Bar and Plate construction- Yes


Performance:
STOCK turbo outlet temperature 245 degrees F(estimated using a 65 degree ambient and 65% compressor efficiency at 15 psi

Temp drop from 245f to 111f(peak temp) in 4th gear run = -134f degree drop

HELIX TEST turbo outlet temperature 253 degrees F(estimated using a 71 degree ambient and 65% compressor efficiency at 15 psi

Temp drop from 253f to 89f(peak) in 4th gear run = -164f degree drop, 21% better cooling than stock

AIT temp- 30 degree drop over stock

pre and post intercooler temp drop- 164 degrees F

Intercooler efficiency- 80% - 21% improvement in efficiency over stock(59%)

Core pressure drop spec is .5psi at 250hp(400cfm) airflow


Installed Pics: