There's no standardisation with it unless you religiously follow one tuning company.
It's the reason why I don't bother re-selling or offering exhausts and induction kits....there's so much cheap stuff on the Market that people won't pay for quality.
And with the F4Rs parts are relatively...
I may be wrong, but id be suprised if that made the gains claimed.
The obvious pro for that set-up is the cold air supplyfrom the front grill.
However its wasted as the filter isnt enclosed and still drawing ambient under-bonnet air. Also from a testing point of view, its very difficult to...
Glass Fibre, price is the main advantage.
Carbon fibre has a higher tensile strength, so is "stronger", and and thinner weave can be used allowing a lighter part to be achieved. its damn expensive though.
If I was to get them made, i'd get GRP.
Dont see the point in carbon fibre on something which is so easily smashed. GRP doors at say £500/pair versus £1500-2000 per pair for CF...hmmm!
No not tried them.
CF ones are available, ive seen them on a customers of Matt@TDF's X85.
I could get some GRP ones made, but theres a min order of 5 sets. ANyone fancy a pair?!
Lol stop whinging, how am I picking holes in "everything" you say?!
I was answering your question about map value.
For the record, if anyone is brave enough, the best place for a cold air/high pressure feed for an airbox is the scuttle area ;)
A cold air feed can't have a volumetric efficiency.
A change in MAP value indicates a change in the engines VE, ie a lower pressure differential accross the intake means you are a pressure value closer to atmos.