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  1. M

    Performance Chips and Other Fun Upgrades on 2017 Corolla iM

    Thanks for the link! That a lot of great info I've been looking for. Nah not exactly cheap just not wanting to plunge $5k for a supercharger kind of cheap lol
  2. M

    Performance Chips and Other Fun Upgrades on 2017 Corolla iM

    Hey CF, I'm looking into ways to up the performance of my 17 iM. I found the "Performance Chips USA" chip that boasts increased everything, from gas mileage to horsepower LINK . The worry I have is that it's only $58, and that sounds WAY too good to be true. Has anyone else used them, or used...
  3. M

    2017 Corolla iM idle fluctuation ; Rev sound ; Weird vibration

    Yeah, the test drive went perfect and it drove really well for a couple days and then started doing all of this. It feels like whoever drove this car drove it ragged and then traded in, that or I'm just stupid unlucky with this purchase. I want to keep the car but technically I could return it...
  4. M

    2017 Corolla iM idle fluctuation ; Rev sound ; Weird vibration

    Yeah that's exactly what my mechanic told me when I called for an opinion lol. I'm going to bring up the the TB and the MAF when I get it to CarMax Friday and see if they actually do it. That exact thing came to mind 2 nights ago when I tested it again lol. It started doing it worse this...
  5. M

    2017 Corolla iM idle fluctuation ; Rev sound ; Weird vibration

    Hey guys, just bought a used Corolla iM this past weekend and having a few issues I wanted to see if you all had seen! 1st - At idle it stays at 1k rpm for most of the time but every like 10 seconds there's a 3-5 second period where the car drops to 500 rpm. Then it hops back up to 1k rpm...
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