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      09-01-2015, 03:50 PM   #1
AutoTalent
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Frequency Intelligent FI Downpipe with Flex! F80 M3 | F82 M4

We recently received a shipment of Frequency Intelligent downpipes for the M3 / M4 and wanted to share a video and few pictures. These do come with flex and are available at a great price point! Please visit the sponsor classified section for pricing! Video below is a full FI system with catless downpipes.












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      09-01-2015, 03:57 PM   #2
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Nice - Wish these woulda been out 2 weeks ago!
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      09-01-2015, 04:43 PM   #3
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Quote:
Originally Posted by dmk08 View Post
Nice - Wish these woulda been out 2 weeks ago!
Thanks David. What did you end up running? ER?
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      09-01-2015, 04:54 PM   #4
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Thanks David. What did you end up running? ER?
Yessir
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      09-01-2015, 11:56 PM   #5
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Besides maybe being easier to install, what are the benefits of flex? And price?
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      09-02-2015, 02:48 AM   #6
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Quote:
Originally Posted by shigeru
Besides maybe being easier to install, what are the benefits of flex? And price?
+1?
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      09-02-2015, 04:13 AM   #7
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Well I did read in another thread that the factory chatted sow pipes have flex joints for heat expansion.
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      09-02-2015, 08:30 AM   #8
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Quote:
Originally Posted by shigeru
Well I did read in another thread that the factory chatted sow pipes have flex joints for heat expansion.
Because the ceramic catalytic converter becomes super hot from the exhaust gases being pushed through its channels. Without the catalytic converter (catless pipes) the heat just flows through the pipe, there isnt an obstruction (cat) to absorb the exhaust heat.

For what it's worth the catalytic converter uses the heat to perform the chemical reaction to replace the more toxic/pollutive exhaust gases with less toxic/pollutive exhaust gases.
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      09-02-2015, 08:41 AM   #9
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Quote:
Originally Posted by Bowser330 View Post
Because the ceramic catalytic converter becomes super hot from the exhaust gases being pushed through its channels. Without the catalytic converter (catless pipes) the heat just flows through the pipe, there isnt an obstruction (cat) to absorb the exhaust heat.

For what it's worth the catalytic converter uses the heat to perform the chemical reaction to replace the more toxic/pollutive exhaust gases with less toxic/pollutive exhaust gases.
Thanks! Makes total sense.
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      09-02-2015, 08:51 AM   #10
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Is this system available with cats of some kind?
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      09-02-2015, 01:55 PM   #11
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Quote:
Originally Posted by shigeru View Post
Besides maybe being easier to install, what are the benefits of flex? And price?
Quote:
Originally Posted by E92murdered View Post
+1?
The flex is recommended because heat caused by the catalytic converter becomes very hot and will expand the pipes. /the flex pipe helps reduce stress on the pipe.

Quote:
Originally Posted by Robotechnology View Post
Is this system available with cats of some kind?
Unfortunately not. Catless is the only form offered.
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      09-02-2015, 01:58 PM   #12
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Quote:
Originally Posted by shigeru View Post
Besides maybe being easier to install, what are the benefits of flex? And price?
I have had some chattering from my ER and I have been told by others and installers fitment isn't always 100%. I'm guessing flex pipes really help there as I have never heard of that with Akra or Eisenmann.
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      09-08-2015, 02:39 PM   #13
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Quote:
Originally Posted by dmk08 View Post
I have had some chattering from my ER and I have been told by others and installers fitment isn't always 100%. I'm guessing flex pipes really help there as I have never heard of that with Akra or Eisenmann.
That is 100% correct. Flex fixes this problem.
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      09-08-2015, 08:50 PM   #14
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Those are some pretty sweet looking downpipes!
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      09-09-2015, 07:16 PM   #15
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Doesn't the downpipes retain more heat WITH the catylist ?
Without the reaction from the cats, shouldn't the DPs ONLY heat up as high as the EGT outlets and not much more ?
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      09-15-2015, 02:19 PM   #16
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Bump!
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      09-18-2015, 02:27 PM   #17
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Bumping this up!
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      10-01-2015, 03:05 PM   #18
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Bumping this up!
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      10-01-2015, 03:13 PM   #19
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Quote:
Originally Posted by pikkagtr View Post
Doesn't the downpipes retain more heat WITH the catylist ?
Without the reaction from the cats, shouldn't the DPs ONLY heat up as high as the EGT outlets and not much more ?
This is correct, but getting DPs with a flex joint isnt much more money, so why not just do it?
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      10-01-2015, 03:17 PM   #20
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Are these the same diameter as ER and AR DP?
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      10-02-2015, 01:52 PM   #21
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Quote:
Originally Posted by TwinMTurbo View Post
Are these the same diameter as ER and AR DP?
Yes, they have a 3" diameter.
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      10-03-2015, 12:52 AM   #22
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Pm price please!
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