PaulW
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Registered: 26th Jan 03
Location: Atherton, Greater Manchester
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Piper-X Induction Kit on my GSi...
main issue, warm air being drawn in...
Considering swapping it for a standard air-box (not drilled) and panel filter...
Opinions??
Really can't be arsed to build up some sort of heat-shroud & cash is strapped as it is 
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Fad
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Registered: 1st Feb 01
Location: Dartford Kent Drives: 330cd
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drill air box all the way 
altho if its standard whether you put an induction kit or pannel filter doesnt matter so much as its hardly a noticable mod 
stick with pannel filter though i noticed i had a flat spot from 1.5-2.5K with mine on
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PaulW
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Registered: 26th Jan 03
Location: Atherton, Greater Manchester
User status: Offline
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does seem a bit 'torqueless' around that range
anyone wana swap then?? X16XE airbox & filter for an induction kit  
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Adam-D
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Registered: 11th May 02
Location: Cheshire
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u2u sent
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PaulW
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Registered: 26th Jan 03
Location: Atherton, Greater Manchester
User status: Offline
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replied 
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Joff
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Registered: 17th Oct 00
Location: Cambridgeshire
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The standard airbox will leave you feeling robbed of all your 109bhp, even with a performance panel filter and useless drill holes.
Get a sealed unit induction kit if you're really not happy with an open cone. At the weekend Broster's 1.6 (Viper) was so much happier to rev than my 1.6 (panel + airbox), which just held the revs long after the throttle was released... even with the engine off
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PaulW
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Registered: 26th Jan 03
Location: Atherton, Greater Manchester
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Joff - how much would I be looking at for a sealed unit? Or would it be possible to adapt something to seal the piper-x I've already got?
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ed
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Registered: 10th Sep 03
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£150 for a BMC CDA...
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Joff
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Registered: 17th Oct 00
Location: Cambridgeshire
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Depends if you want a tailored fitment or a universal filter Paul.
You can quite easily have a heat shield fabricated or possibly use the heat shield from an Audi TT or Renault 5 Pipercross filter.
Is your GSi C16 or X16XE?
Flat spots occur because the initial supply of air when the throttle is opened is warm air from the engine bay.
Once the vehicle is moving, you'll get the benefit of any cold air feeds you're using (you are using cold air feeds aren't you...?
I found with an open induction kit, the car would rev till the cows came home, but it felt the car just wasn't going anywhere.
With the panel filter, the car feels smooth but power delivery is strangled.
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Greasemonkey
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Registered: 17th Apr 02
Location: Drives a Tractor
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i got a pipercross viper on my C16XE, biggest bunch of wank ever, with the cold air feed attached it gives a HUGE flat spot from 3000rpm -4000rpm, so much so that if revvin between these in 5th the car wont pull through it, soon as i take it off, the flat spot dissapears. weird huh
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PaulW
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Registered: 26th Jan 03
Location: Atherton, Greater Manchester
User status: Offline
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Joff - its an X16XE, and doesn't have an AFM.
Greasemonkey - that sounds about right with the flatspot on mine atm
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3CorsaMeal
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Registered: 11th Apr 02
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air filters do sod all really in terms of power, they just filter air.
maybe its too much air causing flat spots?
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Uber_Derv
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Registered: 14th Sep 04
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On a proper car (Skyline) filters do LOADS. im talking about a 30bhp increase. But they do need cold air. I will dig up a picture of what the rover turbo guys do in their engine bays to keep the heat away.
ok i found one... This is my mate Ste's engine bay. the filter is sitting where the battery WAS. The battery is now in the boot. The filter is also surrounded by a cold air box sheilding it from the engine. This is pretty basic. Some guys have carbon fibre boxes with air intakes to the front of their cars.
[Edited on 20-09-2004 by Uber_Derv]
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Adam_B
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Registered: 13th Dec 00
Location: Lancashire
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quote:
Originally posted by PaulW
its an X16XE, and doesn't have an AFM.
Air Flow Meter? should do 
[Edited on 20-09-2004 by Adam_B]
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3CorsaMeal
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Registered: 11th Apr 02
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quote:
Originally posted by Uber_Derv
On a proper car (Skyline) filters do LOADS. im talking about a 30bhp increase. But they do need cold air. I will dig up a picture of what the rover turbo guys do in their engine bays to keep the heat away.
oh yeah on real engines they do give gains, but on the willy wonka vauxhall corsa's they just make noise really
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Uber_Derv
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Registered: 14th Sep 04
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up-dated my post above 
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PaulW
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Registered: 26th Jan 03
Location: Atherton, Greater Manchester
User status: Offline
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quote:
Originally posted by Adam_B
quote:
Originally posted by PaulW
its an X16XE, and doesn't have an AFM.
Air Flow Meter? should do
[Edited on 20-09-2004 by Adam_B]
either then its been removed or its invisible! I tried chasing the induction route back to the manifold & didnt find one...
has a MAP sensor tho...
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