CSF Intercooler fitted and tested (Dyno and Datalogs) on our M2

Discussion in '1M and M2' started by Evolve, Feb 27, 2019.

  1. 27 Feb 2019 at 4:55 PM #1
    Evolve

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    We've used CSF's products on many cars and found them to always perform well. You may have seen us fit the CSF N55 intercooler to an M2 before, and also a 435D, but it was time to properly test the intercooler on our own M2 GTS, Starla.

    The car is running our Stage 2 ECU tune, along with Supersprint Decat downpipe and V2 Eventuri Intake. Our testing confirmed what we'd seen before, that the CSF Intercooler for the N55 is a great addition in terms of performance, along with value for money. You can view the logs here - https://datazap.me/u/evolveautomotive...

     
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  2. 27 Feb 2019 at 5:37 PM #2
    Bee Pee

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    Not twigged how much narrower the CSF FMIC is compared to stock FMIC - do you think this may provide a bit more space to run ducting from lower grill to both OSF and NSF front brakes ?
     
  3. 28 Feb 2019 at 11:26 AM #3
    Evolve

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    It is not narrower. It just about fits in the space available. Must be a camera trick :)
     
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  4. 1 Mar 2019 at 10:41 AM #4
    Bee Pee

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    413bhp for stg2 remap seems low considering intake/DP/FMIC ?
     
  5. 1 Mar 2019 at 10:47 AM #5
    Evolve

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    This particular car has always made slightly lower power on our dyno. I have customer cars making 425+ BHP with exactly the same set up.
     
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  6. 10 Mar 2019 at 9:29 AM #6
    chrisc

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    How is the throttle response? Only downside on intercoolers for me, just increases the lag a touch :(
     
  7. 10 Mar 2019 at 9:36 AM #7
    Bee Pee

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    Chris - fitting Pure or FTP hi Flo inlet pipe in combination with buying the right FMIC - with low pressure difference between inlet and outlet - helps offset potential lag caused by larger FMIC. BP
     
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  8. 11 Mar 2019 at 1:34 PM #8
    Evolve

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    No perceivable reduction in throttle response. It has about the same pressure drop as the stock intercooler so wouldn't expect it to feel much different.
     
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  9. 15 Mar 2019 at 11:28 AM #9
    liquidity

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    What sort of temperature sensors are you using to measure the IATs? And where were they located?

    And the stock figures are for a completely factory config with no changes?
     
  10. 15 Mar 2019 at 12:40 PM #10
    Evolve

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    QUOTE="Evolve, post: 2733340, member: 2655"]

    The car is running our Stage 2 ECU tune, along with Supersprint Decat downpipe and V2 Eventuri Intake.

    [/QUOTE]

    The stock and CSF figures are with the above configuration.

    We measured the IAT data through the cars OBD port so this data is from the cars factory fitted sensors.
     
  11. 15 Mar 2019 at 1:13 PM #11
    liquidity

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    Thanks for the quick reply. I'm guessing iat is measured after the intercooler; any idea where iat_f is measured?

    And what software are you using to read from the OBD port - something generic or something BMW specific?
     
  12. 15 Mar 2019 at 3:04 PM #12
    Bee Pee

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    IAT data is from TMAP sensor on the charge pipe just prior to throttle body.
     
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  13. 15 Mar 2019 at 4:08 PM #13
    Evolve

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    In this instance we used the JB4 for logging purposes.
     
  14. 15 Mar 2019 at 4:27 PM #14
    liquidity

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    Never mind - iat_f is simply the IAT in degrees F rather than degrees C!
     
  15. 15 Mar 2019 at 4:42 PM #15
    liquidity

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    OK, so now I understand the data being presented and it's good of you to post all this up. Though I'm struggling with the IAT for the CSF. It starts at 22 C, drops to as low as 17 C and finishes at 21 C. That doesn't seem plausible? Or have I missed something?

    It does look like with the stock IC that tune just heat soaks the intercooler and it's no longer able to cope. So a more capable IC is a good idea.

    And to put some perspective into my questions... perhaps 12 years ago I spent a fair bit of time datalogging the boost, IAT and ignition curves on an upgraded 993 turbo and tested several different intercoolers on a 2 mile runway so any heat issues and/or timing being pulled became readily apparent. I was able to prove that the factory intercooler was actually quite good and some expensive aftermarket intercoolers were worse. And one very expensive aftermarket intercooler was very good indeed! As it should have been for £12K.
     

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