RB20DET Running extremely lean on idle.
Hey everyone. So to start, my RB20DET ran fine in my other chassis, when i swapped it to my new chassis and switched to a front mount the car runs extremely lean on idle. AEM Wideband is reading 16-17 and then so lean it wont even give me a reading. I havent found any leaks in my couplers or IC piping and cant seem to narrow down if there is a vac leak. I replaced the plugs/coil packs already but cant figure out what my issue is. Stock RB20 with an RB25NEO turbo and ISR downpipe/exhaust.
Any ideas on what else to trouble shoot? Fuel pump finally shit the bed maybe?
Thanks.
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