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But what does this rev change mean? Increased revs is released pressure and easier on engine therefore needs bigger breathers?? Drop in revs means vacuum and pcv is working great??Next time you have the bonnet up and the engine running remove the engine oil filler cap and listen to the revs rise.
Maybe not in the short term but long term?^^ but it doesn’t hurt it.
Engine filler cap off effectively creates a vacuum leak (via the PCV system). Yours been MAP tuned it's not quiet so bad but with MAF based systems all of a sudden you are allowing a fair bit of un-metered air into the system.But what does this rev change mean? Increased revs is released pressure and easier on engine therefore needs bigger breathers?? Drop in revs means vacuum and pcv is working great??
I've seen engines do this before. But I'm pretty sure my 355 does not care if the filler cap is on or off. Revs just sit the same irrespective of cap on/off.
Hahaha, funny you should mention that, yes I absolutely will be using alcohol in the form of methanol as part of the water injection kit. I'd convert to straight E85 if I could but Canberra has two bowsers and she's my daily. Apparently after the tune on Thursday my combustion chambers will stay shiny and clean forever more
Did you mean Penrite ENVIRO+ GF-5 5W-30?