Induction kits do they improve perfomance
- Thread starter Ixon
- Start date
Just recently picked up a Focus 1.8 Zetec
I ran no air filtration whatsoever on the good old OcUK 1.8 Mondeo 
Sounded absolutely as good as it gets for a crappy low-revving 4pot, don't think it did the engine as much harm as the way I drove it! 
Whenever I have looked at my air filter elements they have never really been filthy, especially when you consider how dirty the rest of the car is after 10k miles or whatever. Lesser filtration doesn't particularly bother me as long as it stops particles that can do immediate, serious damage from getting in there.
Sounded absolutely as good as it gets for a crappy low-revving 4pot, don't think it did the engine as much harm as the way I drove it! Whenever I have looked at my air filter elements they have never really been filthy, especially when you consider how dirty the rest of the car is after 10k miles or whatever. Lesser filtration doesn't particularly bother me as long as it stops particles that can do immediate, serious damage from getting in there.
It's going to do sod all apart from noise and add to your insurance.
If performance of the 1.8 is lacking for your needs, could you not have got the 2.0 instead? There's no difference in price really,
With the e36 though (well 323i and 328i) it's more about how restrictive the design is in the first place. Hence why replacing the entire intake system (up to and including manifold) is the done thing.
No idea how restrictive the stock system is on a Focus though.
Most won't.
I'm sure mine is down on power vs a stock airbox (running an Injen short ra, that came with the car), but I don't care as the car is fast enough and the noise at 6000rpm+ more than makes up for it.
Might fabricate a heat shield and a cold air intake from the inner arch and see if that helps (if I can be bothered).
I'm sure mine is down on power vs a stock airbox (running an Injen short ra, that came with the car), but I don't care as the car is fast enough and the noise at 6000rpm+ more than makes up for it.
Might fabricate a heat shield and a cold air intake from the inner arch and see if that helps (if I can be bothered).
Just replace the panel filter for a performance one in the standard air box in that case.
no in that case
What age focus is it though ?
I'm sure theres a good mod to do to the MK1 focus whiich involves fitting the air intake from the ST170.
*edit* here we go
http://passionford.com/forum/ford-focus-and-focus-rs/308582-ford-focus-1-8-zetec-petrol.html
Fit the ST170 snorkel and airbox if you want better induction. OEM is quite often best
In some cases yes.
My stock airbox was mounted so high in the engine bay it can only have been sucking in warm air. Custom induction kit with piping means the cone is now way down at the bottom of the bay sucking in cool air.
Probably only given me a few bhp if that but really helps with remapping.
I wouldn't get one unless I was planning to remap a FI car personally.
My stock airbox was mounted so high in the engine bay it can only have been sucking in warm air. Custom induction kit with piping means the cone is now way down at the bottom of the bay sucking in cool air.
Probably only given me a few bhp if that but really helps with remapping.
I wouldn't get one unless I was planning to remap a FI car personally.
Soldato
- Joined
- 18 May 2010
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- 12,868
Depends on the cars and the induction kit. In your case no, it'll just make a noise and could have a negative effect on the cars performance
this. and it can be hard to improve over OE.
i geek off a lot about car stuff. all of mine have always kept modified oe boxes
My previous car came with a K&N 57i already on it so I can't comment on improving over stock. I did however purchase a universal cone (young and stupid 
) which did have an affect on the cars fuel economy and dropped it by around 3-4mpg. There was no noticeable difference in performance though which was odd. Gone with a Green replacement panel filter on the Megane.
) which did have an affect on the cars fuel economy and dropped it by around 3-4mpg. There was no noticeable difference in performance though which was odd. Gone with a Green replacement panel filter on the Megane.It's definitely the right way to go, but it can end up being expensive and time-consuming for what amounts to something of a placebo effect.I'm sure theres a good mod to do to the MK1 focus whiich involves fitting the air intake from the ST170.
Fit the ST170 snorkel and airbox if you want better induction. OEM is quite often best
Sourcing the snorkel, replacement panel filter and air deflector is the easy part; you can pick them up from eBay or various Ford parts specialists online. But the airbox is the one that will cause the most hassle - rocking horse excrement would seem easier to obtain.
However, if you don't want to go down that particular route there's a mod you can do to the standard Focus airbox which not only knackers the airbox but probably won't really work that well. But at least it's the cheap option - just make sure to get a spare standard Focus airbox and carve that up rather than the one fitted to the car.
But once you've paid through the nose to collect all the bits and pieces you need or worked long and hard to modify a standard airbox, fitting it is relatively simple, albeit fairly annoying. And once fitted, the difference is immediately unnoticeable.
You'll swear the car feels more responsive and has a throatier sound when under hard acceleration, but having spend the best part of £100 and grazed a few knuckles, of course you're going to persuade yourself that it was worth the effort. Frankly, I remain unconvinced.
Soldato
- Joined
- 1 Jul 2007
- Posts
- 5,392
no in that case
What age focus is it though ?
I'm sure theres a good mod to do to the MK1 focus whiich involves fitting the air intake from the ST170.
*edit* here we go
http://passionford.com/forum/ford-focus-and-focus-rs/308582-ford-focus-1-8-zetec-petrol.html
Fit the ST170 snorkel and airbox if you want better induction. OEM is quite often best
Was going to suggest standard ford 2.0. Something liek the 1.8 ait funnel doesnt use the entire grill, while the one for the larger enghine does.