GolfGTIforum.co.uk
Model specific boards => Golf mk3 => Topic started by: brisdriver on 05 March 2008, 22:09
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So i Rigged up a Cold air feed today down to the front vent. going to my standard air box with a k&N panel filter. It's 1.8 Driver. I think it's eased the flat spot around 2000 revs, but I dont know if im making it up. Also I think it sounds slightly different now. Again I may be making it up. Just wondering if anyone has noticed any difference before and after a cold air feed?..... Discuss
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I was debating on getting one, I have heard then make a difference but really a significant difference though. But the idea that colder air=faster would tell you that it should work. If it really did increase performance I would one, but for now I think my money is better spent elsewhere on the car.
LL ;)
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it was hardly expensive though, I brought the pipe for a fiver off a friend ripped out of his crap corsa myself, then i cut of the original pipe entering the air box, and jammed it in and ran the other end down next to the horn. jobs a good un
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Well yeah, for a price like that you can't complain :grin:
I think they do give a little performance gain and considering that you can pay a maximum of like £15-20 from a high street store, its not a bad buy. Of course, I would look to get it cheaper though :tongue:
LL ;)
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It's nothing to do with how fast the air is getting to the engine, it's that cold air is more dense ergo you get 'improved' combustion, oxygen+fuel+ignition= fun times to be had by all. :wink:
You will get some improvement's, maybe a couple of extra BHP but defo worth doing as it certainly won't do any harm!
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Yeah, you gotta love that cold, dense air!
LL ;)
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Certainly ease the heat soak (when moving anyway..)
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ok so being ignorant, whats the heat soak?
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It's all to do with what eightyeightmph was describing. When stationary with the engine fully upto temp, with an induction kit, the air being sucked into the inlet is coming directly from the hot engine bay. The hotter air gets, the less dense it becomes. The less dense air is, the less oxygen it contains. The less oxygen it contains, the more it inhibits the combustiopn process from being as efficient as it can. So you need cold air rather than more air to prevent heat soak, which feels like the engine is being kind of bogged down
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ah i understand now, cheers. so what should the benifits from that i can actually feel be then?
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better performance when you press the loud pedal
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better performance when you press the loud pedal
:grin: :grin:
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well thats good, then, another question, cos mine faces out of one of my lower vents, is it possible that i'll suck water from it into the engine? as that probably wouldnt be so good for it!!!!!
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If theres a gap between between the induction cone and cold feed tube then it can't suck any water in
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I'm running the BMC which is direct feed but the tube has two (slight) bends as it goes from the intake vent to the induction filter so I can't see water making it up there.
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Even the direct feed ones couldn't suck up enough water unless the end of the cold feed hose got submerged in water. Think of it as a cheap water injection system :)
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Well I'm going to a k&n panel filter rather than induction. and it bends round twice so i guess it should be ok then, i was just being a worrier again!!! Thanks for all the help though, and bearing with the stupid questions haha
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The only stupid questions are the ones not asked (don't you just hate that saying lol)