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A/C Slowing Down Acceleration?
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Thread: A/C Slowing Down Acceleration?

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    A/C Slowing Down Acceleration?

    How much power is the a/c taking in my car. I feel the power when accelerating difference when its on and off, talking about flooring it from a stop. Or maybe its in my head. But I read on here that new compressors dont use as much power as the older ones because of the WOT. Having a hard time finding an answer.

    Oh and if it matters I have a RRM Ultimate and Sprint Booster.

    That and I live in Vegas, been 100-110.
    Last edited by n3v3rfollow; 07-16-2015 at 11:51 PM.

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    Senior Member aelfwyne's Avatar
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    Quote Originally Posted by n3v3rfollow View Post
    How much power is the a/c taking in my car. I feel the power when accelerating difference when its on and off, talking about flooring it from a stop. Or maybe its in my head. But I read on here that new compressors dont use as much power as the older ones because of the WOT. Having a hard time finding an answer.

    Oh and if it matters I have a RRM Ultimate and Sprint Booster.

    That and I live in Vegas, been 100-110.
    The 100-110 degree temps are probably what's sucking your power. I'm shocked how much difference I can feel in power depending on intake air temps - it's a big deal with turbos as a slight increase in outdoor temps runs up your intake temps significantly.
    2015 Rosso Abarth - MAD FIAT - 5 Speed - Phase 2
    2015 Granito Lucente 500T - Proyecto Estupido (Salvage) - Auto - OFT Stage 1

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    Quote Originally Posted by aelfwyne View Post
    The 100-110 degree temps are probably what's sucking your power. I'm shocked how much difference I can feel in power depending on intake air temps - it's a big deal with turbos as a slight increase in outdoor temps runs up your intake temps significantly.
    I'm sure the heat is sucking power, but I swear I can still feel a difference when the a/c is on and off. Or I'm just freaking out that something is wrong with my car. I worry a lot unfortunately.

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    Member m3racer's Avatar
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    I can feel a difference with the AC on. Especially in the low rpms. Its a little engine and any extra load on the engine will be felt.
    2013 Fiat Abarth
    2007 Jeep Commander Overland
    1991 BMW E30 M3

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    Senior Member bryanintowson's Avatar
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    Turbo or NA, our cars do not like hot weather.

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    I would need to look it up but a modern compressor only takes a couple of HP (at most) to run at maximum cooling capacity. Could you feel this? Maybe. I just know I wouldn't want to live without A/C in Vegas so i'll GLADLY take that tradeoff.
    2014 Abarth, Rosso/Nero, basically stock w/a few trinkets.

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    Senior Member Trunkout's Avatar
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    The majority of the 10 or so cars I have owned have been 4 cylinder.
    A/C eats 4 cylinder engines. Add heat and ANY 4 cylinder struggles.
    2013 Rosso Abarth 5spd Bianco 17s
    SOLD August 2018 BUT got company car

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    If this is your first 4 cylinder, then it's understandable that you feel a difference while using the A/C. Like Trunkout stated, just a small power draw can make it feel bogged a bit especially in engines with such small displacements.

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    Senior Member boxerbay's Avatar
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    when temps get past 91 i notice its drives less peppy. as if the ecu loads a conservative map and feels less peaky. self preservation space odyssey 2000.

    2012 Abarth Grigio, sunroof, red leather, red mirrors, carbon fiber stripe, Fly1 CF Lip and skirt, XXR 550 17x8.25 19mm w/ 195/40/17, SR48 Stud, R1 Rotors, EBC reds, ATM HCI, ATM FMIC, EC/HPSI Unichip II, PTP turbo blanket, GFB/DV+, Norcal SS DP, J-Pipe 2.25, MPX Axleback, BC Coilovers, Neu-f 28mm rear bar, 3M Crystalline tint, HID 6500K + 3000K.

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    Super Moderator Tweak's Avatar
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    I haven't felt like the change was significant at all with my Abarth. It occurs to me often because I tend to drive "spirited" pretty much all the time. Guess I should be used to it by now but I am always a little shocked with the negligible difference it seems to make. Guessing the more modded the better in such a case since that gives you a bit more power overhead. In a non turbo equipped model I would think it'd be much more apparent.

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