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      09-14-2019, 03:58 PM   #12
tomjoml
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Drives: BMW 540i xDrive M Sport
Join Date: Jul 2019
Location: Farnham

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Quote:
Originally Posted by timmahh View Post
Lol. BARELY dude, and only with a janky setup. The only way they got a FEW hp is by running it two feet away from the engine at front of the car with a fan blowing at it. If you want to run a dryer duct out the front of your headlight for a couple horsepower, by all means do it, but prior to that what they said is exactly my point. Open air, factory, or an *actual* aftermarket CAI (ie, still hidden behind the bumper), the intercooler is doing its job — the air temp is the same when it exits. Makes no difference. I’m not arguing that cold air isn’t important, it is, but you have a friggin intercooler... the turbo is what, several hundred degrees? And you think 5 degree (f’) difference on intake temp before it hits a burning hot turbo makes a massive difference. It doesn’t.
I run a decat stage 2 on my 540 and fitted a BMS filter. Removed it within 2 days - loss of torque and throttle response was noticeable, particularly on the hotter of the 2 days I ran it for. I run a wrench/hc.p remap so it’s far from ‘janky’.
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