the 1.5k-ish cold start idle is VERY normal. (2nd post on this in 2 days)
as for the smell...maybe a varmint jumped up on top of your exhaust? ...
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2009 NISMO # 0193 | QAB | Albums! | 05.04.10 (Dynojet) 291.94hp/248.28tq
Oil Cooler (DIY) | Custom Headlights | GTSPEC Braces | F.I. Long Tube Headers
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