Post #6
owain wrote:As Dan says don't bother with the bung, it's an unproven mod people like to make just for the hell of it. Check these things:
1 - Both mating surfaces are clean and flat. Any slight air gaps will cause crazy idling and revving
2 - There's no crap fallen inside the engine
3 - There's no crap inside the manifold that'll get sucked into the engine
4 - Do up all the bolts evenly all round to make sure it sits flat. Loose at first, then go around tightening them up to the correct torque.
Also worth getting a new throttle gasket while you're there, only about 50p iirc.
I didn't say they weren't bothering with
It's personal preference if you wanted to use one. On my 205 I have one as I think it looks better without and possibly allows easier access to any connections underneath. It sounds nice as it is, but then that may be because the K&N is straight off the inlet on a short stretch of silicone hose, rather than the resonator removed - but then I never ran with it to compare.
Some people seem to think it free's up torque etc etc. When I had mine on the RR I intended to swap back to the resonator box to show any (lack of) changes, but didn't bother.
Throttle body gasket is a good idea, but you may find you have to buy 10.
When you remove the inlet manifold gasket and find half of it left on the cylinder head, use a blade to scrape it off, but be careful that the remains doesn't fall into the head. Bit of break cleaner on a rag to clean it up the surfaces won't do any harm. I used some emery paper on the inlet face to get that nice and smooth. Mine was powdercoated so that was mainly to get rid of any powder on the edge. Obviously I blew the thing through with an airline to get any bead blast residue out, as I wouldn't want my engine to breath that in.
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Senior Test Automation Engineer for the 306GTi6 Owners Club Forum 
Gti6rooty
Posted 19th Apr 2012 at 07:36
