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Heat shield is good for 2 reasons:

it will reduce underbonnet temps that may otherwise have an adverse effect on wiring and other components

the more heat you can retain in the turbine housing, the higher the gas velocity, this spools up the turbo quicker and will reduce back pressure which in turn increases cylinder scavenging

Upside to removing the heat shield - cant think of any.

Yeah, leave it on.

Whilst i have a bigger turbo etc. I had my shield off for a couple of days, OMFG, the stench that can of burning plastic sometimes :)

I could just see my car cutting out with the wires catching fire lol!

who the **** is deleting my posts! grrr .. actually EDIT : oy!! no double posting, confuses the shit outta people like me.. http://www.skylinesaustralia.com/forums/sh...ead.php?t=33601

I've have never had one, and never had any problems.. i'm not sure why it was removed.. burning wires??? pft.. well u shouldn't let em dangle ontop of the turbo! no problems there for me.

Its not defectable as far as i know, as i had mine looked at by a couple of cops, and the EPA (when i lived in VIC) and nothing was said

Like i said.. i have 190rwkw .. no turbo shield, and have no problems and never had any problems since the day i got it and its 30 degrees up here nearly every day at the moment. It may not be great, but i don't notice any negative effects on my engine.. but there doesn't seem to be any *benefit* for removing it Skypy12, so don't bother :)

You will also notice most big turbos have no heat shield either and just sit in the engine bay so i don't see what the big fuss is about !

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