Bonnet scoops/Aero discussion

[GC8E2DD]

Do you notice it more in sweepers or braking?

[funkytown]

wagon perspective - in putting the wing up the back i find the care more settled in the sweepers like heading up into dunlop, and somewhat under brakes as you would begin to expect.

The rear is just all round a bit more planted. This isnt to say a quick change in suspension set up cant overrule and unsettle the whole car dramatically however.

[sl8r]

yes i does really plant the arse of the car, but like i said i cant definitively say whether its better or worse than my old standard wing. would be interesting to take that out for a run to see if i could feel a difference (if i still had it)

[Timmah]

Bigger scoop with top mount + Zerosports intercooler spilitter/deflector (on a v1-6 WRX) with stock ECU = Worthy upgrade OR man points? Admittedly I think they look cool, but I\'d rather say I spent the money to squeeze a little more efficiency out of the stock set up.

[Bugle]

On a vaguely related note. Getting impatient as I cant find a BP I like, missus is not adverse to WRX wagon apart from the bigger scoop (compared to a leggy)

Front mount with std Imprezza bonnet will work? (has sleeper appeal to)

[Joker]

what good is a FMIC on a street car in the first place, is the question I would be asking myself

[PhatRS]

Depends on the street car and also what else you may do with it, good cooling is never a bad thing on a turbo car!!!!

[sl8r]

When i got my big scoop i read it was something like a 11 - 14 degrees cooler intake temp (again i would imagine depends on a few variables). this was 3-5 years ago so dont ask for details

[Marky]

Measure how hot your intake air gets beyond a top mount when you\'re toodling along in traffic and you will see why FMIC makes sense in a street car - or at least why a top mount doesn\'t.

They make more sense in a rally/race car than they do a street/drag car anyway, I know people talk about it like the plague but I genuinely can\'t notice the difference (when driving) in response of a FMIC vs a TMIC (but that\'s just me)

[Timmah]

So for the sake of science, if I bought this: http://dx.com/p/digital-compact-lcd-thermometer-with-outdoors-remote-sensor-15553?item=37 and stuck it in the middle of the intercooler, and go for a normal drive, log temps. Then switch to the bigger scoop and repeat. We would have something to go off?

I\'m most happy to do this experiment, however waiting for results would be a while

[PhatRS]

You probably want to measure the intake temps not the temp of the air coming in the scoop, volume of air not temperature would be affected by having a bigger scoop (though there maybe a little difference in temp due to more/less friction).

More air through the cooler = more heat exchanged, no harm in cooling the incoming air down as well but you wont do that much with a bigger scoop.....hence watersprayers!

[Timmah]

 PhatRS said:

You probably want to measure the intake temps not the temp of the air coming in the scoop, volume of air not temperature would be affected by having a bigger scoop (though there maybe a little difference in temp due to more/less friction).

More air through the cooler = more heat exchanged, no harm in cooling the incoming air down as well but you wont do that much with a bigger scoop.....hence watersprayers!

Could be achieved by drilled a little hole into the intercooler then bung the sensor in?

I have the watersprayers, but lack anything else

[funkytown]

An IAT sensor for links tell you exactly what your talking about Timmah - there are lots of graphs around with such info.

PLOX has some really interesting ones showing TMIC vs FMIC once you started raping it consistently. dunno where they are but are in CS somewhere.