VTS, filter or worth going induction kit

That looks horrendous mate! The pipe ducting won't be doing a single, solitary thing to help with feeding cold air to the intake - there isn't any "ram-air" effect forcing any cold air in the intake and down the pipe at road speeds. All you're doing is sucking in hot air from the engine, which is going to hurt your engine's power.
 
It is a little faster though :)
Hmm, maybe more bodge-jobbing is required:
*Routing the filter where theres more space behind the headlight
*Have a larger air intake from the grill area & channel this to the filter

I'm no expert as you can probably tell :D
What ya guys recon
 
It's probably not faster. The throttle responce may be slightly quicker, but you're sucking hot air into the engine. Hot air is less dense = smaller expolsion = less power. You probably think it's faster cos it's louder, and you get a placebo effect.

What you want is a cold air feed. The large air intake things *don't* force any extra air into the intake. Contrary to what you think, a small intake nozzle, which opens out inside gets the most air in (just like the original!) The only thing that the large air intake things actually do is isolate the air intake from the heat of the engine, which actually will give you more power - as the cold air is denser. A cold air feed from behind the headlight will have a similar effect.
 
placebo effect yeah probably so lol
Gonna keep tinkering, maybe put some spare pc frans to use hmm
..got induction kit on insurance anyway for £17 more.
 
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juno_first said:
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Judging by the air filter, it's probably in need of a major service :)

Personally, I would've gone for a K&N/ Green drop-in filter and given the std airbox a thorough clean. If it's definitely an induction kit you're after, one of these would be your best bet.
 
Well it only cost £40, I like the noise it makes & its definitely faster.
I've only had the car 10 days & don't think its been looked after very well the past few years so I'll be taking it for a service soon.
The filter I've put on is a 57i type K&N meant for a carb mounted saxo I think
 
No saxos were carb, just some of the early 1.1s were SPI thats all. That air filter isn't really suitiable for a VTS at all not enough surface area. Also your cold air feed won't do much you need an enclosed section really like my CAI.

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Okay you may laugh at this hair-brained idea I concocted up in my break, as I didn't even know what an induction kit was last week, so from what I've learned so far:

FACT: the more oxygen that reaches the plenum air intake then the better the engine 'breathes' & better the performance

STANDARD INDUCTION KIT ATTRIBUTES: a high grade/high air intake filter replaces the standard filter/air intake assembly, typically positioned away from engine behind a headlight as cooler air is better; as this is more dense/has more oxygen which gives better performance, downside is cooler air reduces mpg

IDEA: air at slightly higher pressure will be more dense & contain more
oxygen: using multiple fans to increase the air pressure (not airflow) of the air reaching the current induction kit filter then performance will be better + non cold air will give better mpg

TESTING:
* fan speed adjustment / >2 fans
* filter between 2nd fan & induction filter if air-flow too much
* holes for hot air displacement escape: to test with different size holes / number of holes, will also affect engine noise under full throttle

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juno_first said:
I've had a Saxo VTS for a short while now & am thinking about some performance mods.

Its still got the stock air-intake system (everything is stock) & recon the filter may be dirty or something as its not as fast I thought it would be (it really is a VTS).

I looked around my local Hal. store & can get a cone shaped filter for £38 or Induction kit for £91. Is it worth going the extra hog & getting an induction kit? & how much will it cost to fit/can you do it yourself?

thanks
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kk When i had mine (VTS) and was an avid member of the saxo sports club, I splashed out and bought a K&N panel filter, a CDA enclosed kit and a Pipercross Viper kit all with an abundance of nice samco hosing to get them installed correctly.

After several days of trying all three on the road, I concluded the K&N replacement drop in panel filter was as good as the other 2.

I had no other mods at the time. So I simply sold the other 2 on. The other kit that deffinately works well is the K&N gen 2 enclosed kit £200+ iirc and was developed on one of the guys saxos back in the day. The RR results were very good.
 
Does anyone have any rolling road figures to support these claims for extra power, or is everyone getting their evidence from the usual Mark1 **** dyno?

Out of interest...


M
 
A little electrically driven fan isn't going to make any difference whatsoever to the air intake. You've basically thought up the "electric supercharger", which is a famous ebay "add 20bhp instantly" con.

I'd keep it simple, stick with the original induction pipework and put a K&N drop in panel filter in there. If you *really* want to junk the original pipework, you can either buy an enclosed kit, or rig up a simple cold air duct to behind the headlight.
 
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timbob said:
A little electrically driven fan is going to make any difference whatsoever to the air intake. You've basically thought up the "electric supercharger", which is a famous ebay "add 20bhp instantly" con.

I'd keep it simple, stick with the original induction pipework and put a K&N drop in panel filter in there. If you *really* want to junk the original pipework, you can either buy an enclosed kit, or rig up a simple cold air duct to behind the headlight.
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Never heard of an electric supercharger, I'm always overclocking computers so guess I just transferred the knowledge lol.

Yeah people are recomending the k&n panel filter, I might just do that If I get probs with the current setup.
 
i really recommend against K&N. the reason they get higher flow figures is because they simply filter less. look up some independant reviews, cotton gauze filters just do not filter anywhere nearly as good as paper.

dual layer foam (ITG, Pipercross) filter as good if not better than paper and can hold more dirt

its called an air filter for a reason. i took the 5 year old K&N panel filter out of my car when i held it up to the light and could see holes in it... clearly not filtering a lot

put a K&N on if you hate your car IMO

offroad racing/motor cross seem to favour dual layer foam... cos it keeps dirt out
 
Meridian said:
Does anyone have any rolling road figures to support these claims for extra power, or is everyone getting their evidence from the usual Mark1 **** dyno?

Out of interest...


M
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When the K&N gen 2 kit was developed for the Saxo VTS it was done on one of the club members own cars, I remember him posting the RRs etc and it was a 10bhp increase, there were several tests done. This is 4 years ago though so the chance of finding a link etc is impossible.
 
YAY

:) Job done now :)

Had a look in Hal. & proper piping was £7.98 for 50cm WTF & would have needed at least 2 pieces.
So went B+queue & got some domestic cooker air ducting (£7.98 for 1m) which has nice thick aluminium & bends very well :cool:

Used some spare PC water-cooling pipe to extend the crank-case pipe :p

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