juicebox24

I recently got a stillen gen 3 intake for my g37 auto and ever since it has been having idle issues. And when I put it in drive or reverse I can hear a rattling sound sometimes. The idle drops to 500 and lower in drive and reverse. Did the idle relearn, ecu reflash, tranny flushed twice and dealer made sure it was full (no I didn't pay to have it flushed the 2nd time), secured the intake pipes, breather hoses are on tight, throttle bodies cleaned, maf sensors cleaned, no CEL, car runs and responds good, the shaking and rpm drop goes away when I turn on the AC, idle normal in park and neutral, I do hear a hissing sound by the pcv lines not high pitched, its a 2013, 52,500 miles, always put premium gas in it, and full synthetic 10w-30 oil cus I live in california