deano87
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Registered: 21st Oct 06
Location: Bedfordshire Drives: Ford Fiesta
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A few things first.
1) I know we shouldn't take this as concrete, like it says in the mag.
2) I see this test as pretty fair. Same car, same rolling road.
Users always say on here how most people over estimate the BHP an air filter (mainly cone filter induction types) gives to the car, and the same with panel filters.
So how, if their test is pretty accurate, are these filters giving gains of about 9bhp?
And then, why doesn't the driver notice any difference on the road in terms of performance, which you'd surely do if there was an increase?
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Hammer
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Registered: 11th Feb 04
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What car are they testing it on?
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deano87
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Registered: 21st Oct 06
Location: Bedfordshire Drives: Ford Fiesta
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1.6 16v Astra G. SXi me thinks.
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FruitBooTeR
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Registered: 18th Jan 07
Location: Wolverhampton Drives: S15
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Yeh i read this, the viper seemed the best i just wish they had used a BMC CDA aswell
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deano87
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Registered: 21st Oct 06
Location: Bedfordshire Drives: Ford Fiesta
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quote:
Originally posted by FruitBooTeR
Yeh i read this, the viper seemed the best i just wish they had used a BMC CDA aswell
Probably made in the same factory tbh.
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John
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Registered: 30th Jun 03
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Hammer your car must have about an extra 20+ bhp.
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Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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did they do a run before and after?
many things can affect output by 9bhp, air temp changes tyres pressures, all sorts
if there were no runs beforehand that instantly throws this out anyway
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deano87
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Registered: 21st Oct 06
Location: Bedfordshire Drives: Ford Fiesta
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It was 101bhp with standard air box.
And 111bhp or something WITHOUT any kind of air filter.
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Hammer
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Registered: 11th Feb 04
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quote:
Originally posted by John
Hammer your car must have about an extra 20+ bhp.
Yip, highly modified engine's will see a far greater percentage increase....much like mine 
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Dean_W
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Registered: 13th Dec 05
Location: Downham Market, Norfolk
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quote:
Originally posted by deano87
And 111bhp or something WITHOUT any kind of air filter.
Didn't Dave do a test with no filter and it gave 6BHP or something?
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Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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i dont even know what car you drive hammer
WHAT IS IT?
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gianluigi
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Registered: 9th Mar 05
Location: Ipswich, Suffolk
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Steve, don't be so ignorant, and stop ignoring my emails.
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Hammer
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Registered: 11th Feb 04
User status: Offline
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quote:
Originally posted by Steve
i dont even know what car you drive hammer
WHAT IS IT?
It's a highly modified N/A 16v offering from Vauxhall, that's all i shall say.
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Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
User status: Offline
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WHAT IS IT
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deano87
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Registered: 21st Oct 06
Location: Bedfordshire Drives: Ford Fiesta
User status: Offline
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quote:
Originally posted by Dean_W
quote:
Originally posted by deano87
And 111bhp or something WITHOUT any kind of air filter.
Didn't Dave do a test with no filter and it gave 6BHP or something?
That engine had a sock filter or something.
This was basically taking out the airbox and having nothing to stop water & dirt getting into the engine. This was only on the rolling road. Obviously, you wouldn't do it on the road 
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ed
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Registered: 10th Sep 03
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A gain in BHP isn't going to be that noticable. You'd notice it if the torque increased though.
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deano87
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Registered: 21st Oct 06
Location: Bedfordshire Drives: Ford Fiesta
User status: Offline
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quote:
Originally posted by ed
A gain in BHP isn't going to be that noticable. You'd notice it if the torque increased though.
Ok, going back to my other question then. Why did they see BHP gains of quite a fair bit, when people on here say induction kits don't give you much gain 
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Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
User status: Offline
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they dont generally, but it all depends on the design of the original airbox etc
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deano87
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Registered: 21st Oct 06
Location: Bedfordshire Drives: Ford Fiesta
User status: Offline
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ok.
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JM_16v
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Registered: 17th Oct 05
Location: Essex Drives: GLC63S
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green cotton biatch
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N3CRO
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Registered: 12th Apr 07
Location: Sandy, Bedfordshire
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Like it was said in that article. The results ain't really that accurate. You'll get more accurate results from driving down an A road at 60mph on a cool day coz you've got lotsa cool air going thru whereas on a dyno, the car isn't actually moving.
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deano87
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Registered: 21st Oct 06
Location: Bedfordshire Drives: Ford Fiesta
User status: Offline
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quote:
Originally posted by Necromancer
Like it was said in that article. The results ain't really that accurate. You'll get more accurate results from driving down an A road at 60mph on a cool day coz you've got lotsa cool air going thru whereas on a dyno, the car isn't actually moving.
Yeah, and because one of the filters was stationary, it didn't give such good results.
So therefore, it's like saying those that gave good results because they weren't moving, will give worse results when they are moving. . .
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John
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Registered: 30th Jun 03
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No its not, it saying that because it wasn't moving they don't know.
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Dave A
USER UNDER INVESTIGATION - DO NOT TRADE
Registered: 10th Dec 03
Location: County Durham
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as long as the dyno they used had a colling fan with a minimum of 14,000 cfm then it would create the effect of the car moving at over 40 mph. depending on the area the cooling fan covers that is.
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