Biggest problem you have is with the standard I/C.
Cost to have one made just a fraction bigger (height n depth,
but not width due to space) just isn't worth the cost. Honest.
The fact is, is that it really doesn't get enough airflow over it.
TBH, if your're after a remap and want to stick with the standard
I/C then you really should remove the plastic shroud that is fitted
to it as it is shaped to fit the 'vent' opening under the combined
fog/indicator light unit. And that opening is quite a bit smaller than
the frontal area of the I/C ! So what do you do to change that, eh ?
Quite simple really, remove the fake N/S air scoop in the Brab lip
spoiler (it is held from behind by oblong 'split' tension clips.)
Jack the car up.. at the left/nearside. Now push n bash the fake grill
around and the clips will oh so slowly scrape n slide off their lugs.
You should just about find some room/space to get a hand behind
or between the lower edge of the Brab spoiler and the front wing.
Now get some black wire mesh and cut it about an inch bigger
or so all round than the fake grill. Cut slots so it can fit over the
original 'lugs' in the back of the Brab lip spoiler. Use the original
clips if possible to hold the mesh in place. B U T before you fit it,
carefully cut an opening in the GRP front wing that is directly
behind the grill opening in the Brab lip spoiler. Do that, and you can
then fit the new mesh grill with the sprung clips..or epoxy glue.
(The clips are cheap and easy enough to get hold of from MB if you
loose or break any)
That extra opening you have now made will possibly allow 50% more
air flow through to the unshrouded I/C !.
The only constricton after that will be the amount/number of slotted
vents in the inner wing panel. They really should need increasing to
let this new extra air flow out through. As to how...I'll leave that for
you to decide and work out, but it's all possible.
That 'simple' mod will give you a far better operating I/C than it was
and for relatively little work. (Ultimately if you change lots of other
components, an FMIC would beat that hands down.)
As for lag with an FMIC....you only get that if you go too big on the
dia of the pipework....and most usually do ! So it's simple really....
if you extend the I/C pipework (as you would do with an FMIC) then
keep the dia of the pipework to and from the FMIC smaller than usual,
that way you keep the flow rate up and therefore the lag time down.
(It doesn't matter if you have to 'step up' the dia to the FMIC
and then 'step it down' again after it.)
