HI Paul.
As above first check the O-ring on the intercooler bend going into the intercooler, easier to do with the bumper removed.
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Also crash bar, you can take out the NS light to gain access better to.
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Mind if you are decent with spanners it can all be done from within the engine bay without removing the front off.
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You can unplug the MAF sensor also to check its not that, but with the smoke look at intercooler hoses and O-rings.