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  1. #1
    Veteran Member Three Rings
    Join Date
    Jun 19 2018
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    Orange County, CA

    Question about upgrading intercooler

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    Hello everyone,

    Wondering if the Iroz 1000 intercooler is worth getting for its price ($1800-$2000)? Or do you think the STM intercooler can suffice? I'm planning to upgrade to the TTE855 but currently using Uni's intercooler and wasn't sure if it would be good enough for that power level.

    Any insight will be greatly appreciated.

    Thank you!

  2. #2
    Junior Member Two Rings
    Join Date
    Aug 22 2021
    AZ Member #
    620690
    Location
    Virginia

    This may help answer some of your questions. Granted Adam went from an IROZ 800hp to 1000hp intercooler, but he provides some good graphs and explanation. I can't speak for the STM as I would be in the same situation to look for the best performance for the best price. However, cooling air is definitely not a bad thing.

    https://youtu.be/dfiwnIOzCes

  3. #3
    Senior Member Three Rings
    Join Date
    Dec 02 2020
    AZ Member #
    575602
    Location
    Austin, TX

    Quote Originally Posted by Auditude437 View Post
    Hello everyone,

    Wondering if the Iroz 1000 intercooler is worth getting for its price ($1800-$2000)? Or do you think the STM intercooler can suffice? I'm planning to upgrade to the TTE855 but currently using Uni's intercooler and wasn't sure if it would be good enough for that power level.

    Any insight will be greatly appreciated.

    Thank you!
    The STM, Race3 1000, Iroz 1000 all use the same 1000hp rated Garrett core. Iroz does have the nice fancy billet end tanks but performance differences will be negligible.

  4. #4
    Junior Member Two Rings
    Join Date
    Aug 22 2021
    AZ Member #
    620690
    Location
    Virginia

    Quote Originally Posted by Alex D View Post
    The STM, Race3 1000, Iroz 1000 all use the same 1000hp rated Garrett core. Iroz does have the nice fancy billet end tanks but performance differences will be negligible.
    Alex, thanks for the comment, like OP, I'm researching whether I need to spend the additional money for 800 or 1000hp intercooler; $800 could go to other things. I haven't seen any actual numbers from STM or R3 aside whats mentioned on their sites.

  5. #5
    Senior Member Three Rings
    Join Date
    Dec 02 2020
    AZ Member #
    575602
    Location
    Austin, TX

    Quote Originally Posted by imadad2 View Post
    Alex, thanks for the comment, like OP, I'm researching whether I need to spend the additional money for 800 or 1000hp intercooler; $800 could go to other things. I haven't seen any actual numbers from STM or R3 aside whats mentioned on their sites.
    I’m running the Race3 Intercooler and fitment was perfect. If you plan on a hybrid later down the road just go with the 1000hp intercooler.

  6. #6
    Veteran Member Four Rings
    Join Date
    Jun 11 2012
    AZ Member #
    95025
    My Garage
    2021 Audi SQ5 | 2019 Audi TTRS | 2004 Audi S4 (parted out) | 2000.5 Audi S4 (sold) | 2001 Audi A4 1.
    Location
    Corona, CA

    Question about upgrading intercooler

    Quote Originally Posted by Alex D View Post
    I’m running the Race3 Intercooler and fitment was perfect. If you plan on a hybrid later down the road just go with the 1000hp intercooler.
    Just going to share this post here from the hybrid turbo world record holder:

    https://www.instagram.com/p/CheZsTUD...d=MDlmYmQ2NmI=

    IMG_7589.jpg
    IMG_7588.jpg
    Last edited by mtwallace85; 11-05-2022 at 06:50 PM.

  7. #7
    Senior Member Three Rings 8STTRS's Avatar
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    Jul 28 2021
    AZ Member #
    614053
    Location
    Navarre, Florida

    I'm running the STM, along with my wife's RS3. It absolutely suffices for our builds and power levels. I don't have any reason to think we missed out on anything by not getting an Iroz intercooler. As mentioned above, they all use the same core. Besides, the intercooler looks pretty nice behind the grille. Much like PJ's car in the image above.
    2018 Audi TT RS
    JDY Next Gen 6670 coming soon (shooting for 975-1kwhp on low boost).

  8. #8
    Senior Member Three Rings
    Join Date
    Dec 02 2020
    AZ Member #
    575602
    Location
    Austin, TX

    Quote Originally Posted by mtwallace85 View Post
    Just going to share this post here from the hybrid turbo world record holder:

    https://www.instagram.com/p/CheZsTUD...d=MDlmYmQ2NmI=

    IMG_7589.jpg
    IMG_7588.jpg
    Interesting, do you know if Paul had any follow up post or if he kept the intercooler on there? I thought i saw him post some more recent times going deeper in the 8s but didn’t see if he changed his intercooler.

  9. #9
    Veteran Member Four Rings
    Join Date
    Jun 11 2012
    AZ Member #
    95025
    My Garage
    2021 Audi SQ5 | 2019 Audi TTRS | 2004 Audi S4 (parted out) | 2000.5 Audi S4 (sold) | 2001 Audi A4 1.
    Location
    Corona, CA

    Quote Originally Posted by Alex D View Post
    Interesting, do you know if Paul had any follow up post or if he kept the intercooler on there? I thought i saw him post some more recent times going deeper in the 8s but didn’t see if he changed his intercooler.
    He removed it and I believe replaced it with the Unitronic intercooler.

  10. #10
    Veteran Member Four Rings A4 Centaur's Avatar
    Join Date
    Jun 05 2009
    AZ Member #
    43360
    My Garage
    2020 Ducati Panigale V4S
    Location
    Scottsdale Arizona

    ^ Great start man! Saw a few years ago a guy put a nitrous spray bar on his FMIC to help cool the core for short bursts of power.
    2023 S4 Prestige Mythos Black. Brembo GT BBK, APR FMIC, 034 Stg 1
    2012 B8 A4 Avant, Phantom Black S-Line Prestige, 2014 CPMB Engine, 8 speed, JHM K04-R, Eurocode HFC, APR FMIC, 034 Alu Kreuz, Vogtland Coilovers, Stoptech 380mm BB Kit, H&R Swaybar, ECU with IE K04 Tune, Rev. "d" DV, R8 Coils, Folding Mirrors, S5 Rear Brakes, 034/Apikol mounts, OEM Facelift LED Brake lights ]

  11. #11
    Established Member Two Rings
    Join Date
    Sep 22 2005
    AZ Member #
    8072
    Location
    Somewhere Within

    Turbo's that require high pressure ratio's (hybrids) to run within their efficiency curves will likely not benefit from large intercooler cores (1000+ hp) because of pressure drop.
    Full frame turbo's with larger compressor housings flow at lower ratios are able to utilize the volume with minimal impact.

  12. #12
    Senior Member Three Rings 8STTRS's Avatar
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    Jul 28 2021
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    Navarre, Florida

    Quote Originally Posted by Don R View Post
    Turbo's that require high pressure ratio's (hybrids) to run within their efficiency curves will likely not benefit from large intercooler cores (1000+ hp) because of pressure drop.
    Full frame turbo's with larger compressor housings flow at lower ratios are able to utilize the volume with minimal impact.
    While I understand the sentiment, I will disagree when it comes to the larger hybrids on the market. I absolutely tapped out my Wagner Evo 3.X which was meant for 600+hp, another person with the same turbo tapped out his Iroz 800hp core. Both of us are now on 1000hp cores and managing temps and boost pressures much more consistently. With the stock turbo and the Wagner I had prior, on 93, you can certainly feel exactly that--the pressure drop and noticable lag. Now with this 1000hp core and a hybrid, it hits really hard down low with no perceivable drawbacks. My builder insists that on larger hybrids, that they're all treated like full frames now with the build/components. Not quite to the level of sleeving yet but, it's just a step behind that.
    2018 Audi TT RS
    JDY Next Gen 6670 coming soon (shooting for 975-1kwhp on low boost).

  13. #13
    Established Member Two Rings
    Join Date
    Mar 21 2013
    AZ Member #
    111814
    Location
    whitesboro,ny

    I know im not running the power your running but I put a IE FMIC on my B8 2.0t with dual nozzles of water meth and my Temps dropped like crazy and the power is definitely there. My Temps dropped to 70 degrees and on mornings where it's really cold in NY my Temps would drop to 40 degrees and my power was even more incredible. I haven't taken it to the track yet but I'm putting out about 425hp I wish I could get more of it. But I know my intercooler is twice the size of my stock radiator. You wanna check on something lookup the 1400hp RS3 on YouTube he will tell you what he built.

    Sent from my SM-F926U using Audizine Forum mobile app

  14. #14
    Veteran Member Four Rings
    Join Date
    Jun 11 2012
    AZ Member #
    95025
    My Garage
    2021 Audi SQ5 | 2019 Audi TTRS | 2004 Audi S4 (parted out) | 2000.5 Audi S4 (sold) | 2001 Audi A4 1.
    Location
    Corona, CA

    Quote Originally Posted by 8STTRS View Post
    While I understand the sentiment, I will disagree when it comes to the larger hybrids on the market. I absolutely tapped out my Wagner Evo 3.X which was meant for 600+hp, another person with the same turbo tapped out his Iroz 800hp core. Both of us are now on 1000hp cores and managing temps and boost pressures much more consistently. With the stock turbo and the Wagner I had prior, on 93, you can certainly feel exactly that--the pressure drop and noticable lag. Now with this 1000hp core and a hybrid, it hits really hard down low with no perceivable drawbacks. My builder insists that on larger hybrids, that they're all treated like full frames now with the build/components. Not quite to the level of sleeving yet but, it's just a step behind that.
    How do you like the TC870XT? Check your DMs, I’ve been trying to get ahold of you haha.

  15. #15
    Senior Member Three Rings 8STTRS's Avatar
    Join Date
    Jul 28 2021
    AZ Member #
    614053
    Location
    Navarre, Florida

    Quote Originally Posted by mtwallace85 View Post
    How do you like the TC870XT? Check your DMs, I’ve been trying to get ahold of you haha.
    Haha. Sorry, man. I have been terrible with checking those.
    2018 Audi TT RS
    JDY Next Gen 6670 coming soon (shooting for 975-1kwhp on low boost).

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