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that's normal i do to , but still up normal, we should not smell exhaust in cab it's toxic and dangerous, but what can you do?? the dealer never gives a clear answer because it's needs a extensive search,
but one person said an interesting reason, he said the problem is with factory's tune, the air/fuel mixture is set lean to meet some regulations so it's not burning fuel efficiently that's why we smell under burnt fuel.
i think the solution to get it retuned outside the dealer???

PS: from observing this problem i noticed: the smell disappeared after i lowered the octane? now i am using 87 ?????

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It's not exhaust...you'd hear it if you had a leak anywhere in the exhaust system.
I think its more likely just smells from heated exhaust manifolds/cats that is getting picked up through the cowl where the air intake is.
You probably only smell it AFTER you let up on the throttle and are back to cruise mode?
 
It's not exhaust...you'd hear it if you had a leak anywhere in the exhaust system.
I think its more likely just smells from heated exhaust manifolds/cats that is getting picked up through the cowl where the air intake is.
You probably only smell it AFTER you let up on the throttle and are back to cruise mode?
Correct! SAME THING HAPPENS WITH MINE
 
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