IACV Filter renewal

The IACV went in with a pristine grille and foam filter, today it looks rather the worse for wear!

First time I've really looked at it after fitting - and first time I noticed air was also being sucked through the gasket paper at the bottom.

Mixed blessing - i.e. not quite working as originally designed but on the plus side a little more intake volume will reduce the restriction caused by the plate. The IACV inlets are 16mm diameter =201mm², the space on the adaptor plate 16mmx10mm =160mm².

Gasket paper adjusted to permit max inbound air flow.

Back in place, now with some genuine air filter foam which is a little jury rigged. Ticking the box on the KISS front, but its not really that neat - one to think on before finalising.

Engine test - idle not affected rock steady at 1000 revs. If the change has affected the mixture slightly the ECU/Lambda setup can automatically adjust the fuelling for any slight increase in air flow. At some point I'll check the lambda adjustment is still actively fuelling and not hitting its preset stops.