act performance induction kit
Discussion
Yup! Well worth it i'd say... I put the induction system, superflare trumpets, and cherrybomb exhaust on all from ACT last month and you can feel it breathing better, it seems a lot more revvy and feels a lot happer at the upper end of the rev range. Plus Tim reckons you add around 10 ftlbs and 10bhp for the induction and another 10 for the trumpets so pretty well worth it! If you're coming to the bulls head meet next week you're welcome to have a look/ride if it would help sway your decision!
Nick
Nick
I can be sceptical about gains from induction products as a stand alone item but I fitted the ACT smooth bore piping and K&N and noticed a significant improvement in breathing, seemed a lot smoother and more free-revving.
I'm not sure about any bhp gains but the better running makes it a worthwhile addition.
Top product and Tim's a easy bloke to deal with.
Corin
I'm not sure about any bhp gains but the better running makes it a worthwhile addition.
Top product and Tim's a easy bloke to deal with.
Corin
Upgrading to a K&N Filter is always a good move, they are fantastic filters and are cleanable, but only need cleaning very rarely. In Dave Vizard's TBASE book, there is a flow comparrisson of a K&N and a K&N that had just completed the Paris Dakar, or similar. The flow was very similar. Whilst you are at it you may as well do the piping as the corrugated stuff is not great.
Breathing is much better with the K&N set up and the car feels much more lively. Personally, I would definately go with the K&N filter as the old foam one is crap from the start so I would guess there would be limited benefit from the smooth induction pipe alone. Once you've done it it's almost fit and forget and will reduce you labour charges at each and every service as the old filter is a bitch to get at (well it is on the Griff anyway).
FFG
FFG
Wildfire said:
Upgrading to a K&N Filter is always a good move, they are fantastic filters and are cleanable, but only need cleaning very rarely. In Dave Vizard's TBASE book, there is a flow comparrisson of a K&N and a K&N that had just completed the Paris Dakar, or similar. The flow was very similar. Whilst you are at it you may as well do the piping as the corrugated stuff is not great.
The original Pipercross filter is also cleanable, and i wouldn't have thought that there is any significant difference between the foam original, and the mesh K&N. I'd agree that changing from a paper element on a 'normal' car to a K&N would be a good upgrade, but are the Pipercross ones really that poor?
Paul
The Surveyor said:
Wildfire said:
Upgrading to a K&N Filter is always a good move, they are fantastic filters and are cleanable, but only need cleaning very rarely. In Dave Vizard's TBASE book, there is a flow comparrisson of a K&N and a K&N that had just completed the Paris Dakar, or similar. The flow was very similar. Whilst you are at it you may as well do the piping as the corrugated stuff is not great.
The original Pipercross filter is also cleanable, and i wouldn't have thought that there is any significant difference between the foam original, and the mesh K&N. I'd agree that changing from a paper element on a 'normal' car to a K&N would be a good upgrade, but are the Pipercross ones really that poor?
Paul
Good question. Although in very general terms a cotton filter may, like for like, give somewhat better flow at the expense of filtration versus a foam one, in reality one doesn't see a lot of difference in testing Pipercross vs. K&N across the board - depending on which magazine/test you beleive, on some applications one may score a bit better, on others it will be erm, the other.
Unless the aftermarket K&N the likes of ACT carry is significantly bigger than the other, I think I'd be hard pressed to se a K & N filter as an upgrade to a Pipercross (or vice versa), and if it is bigger, this will only come into play if the OE Pipercross is marginal at the kind of power your engine produces. And if this is the case, I reckon a bigger Pipercross (or whatever brand name performance air filter) would do the job just as well.
That's a whole lot of 'ifs' in one short paragraph. Should have drawn a flow chart.
That'll be the Pipercross ones, they are oiled from new and go sticky when they get covered in road grit (just like they all do), but as said before, Pipercross do sell a cleaning and re-oiling kit which refreshes the filter. I'm not sure they are that much cheaper than the K&N either!
I have had K&N for a few years.. TBH its easier to clean than the original, but I think any wild claims about improved performancs are down to fitting a clean new K&N compared to a Pipercross due a good clean.
Secondly, the early 'tubes' are a lot more squashy than the later versions, more like a fabric in the early ones & more rubber in the later ones. If you are going to invest in this area the smooth AFM to Throttle bend seems the best option along with a good clean of the filter, IMHO.
Dave
Secondly, the early 'tubes' are a lot more squashy than the later versions, more like a fabric in the early ones & more rubber in the later ones. If you are going to invest in this area the smooth AFM to Throttle bend seems the best option along with a good clean of the filter, IMHO.
Dave
The Surveyor said:
Wildfire said:
Upgrading to a K&N Filter is always a good move, they are fantastic filters and are cleanable, but only need cleaning very rarely. In Dave Vizard's TBASE book, there is a flow comparrisson of a K&N and a K&N that had just completed the Paris Dakar, or similar. The flow was very similar. Whilst you are at it you may as well do the piping as the corrugated stuff is not great.
The original Pipercross filter is also cleanable, and i wouldn't have thought that there is any significant difference between the foam original, and the mesh K&N. I'd agree that changing from a paper element on a 'normal' car to a K&N would be a good upgrade, but are the Pipercross ones really that poor?
Paul
Never said nowt about the Piper X being a bad filter, and I know they are clean able, I used them for some time on my mini, but as the Air Filter is visible the K&Ns do look nicer. I found the K&Ns got clogged up less quickly than the Piper X. But that could be to do with the type of oil used on them. BTW TBASE stands for Tuning the British Leyland A Series Engine.
Irregardless of TVR, K&N have always been the mutt's nuts in filters, you may have seen ITGs and Pipercross etc in trick engine bays but generally it's because they are the only foam filters that can be mounted under the baseplates of trumpets in tight spaces.
K&N are the choice of championis where space allows.
K&N are the choice of championis where space allows.
I always disliked them, stemming from use on piston ported two strokes. They spat back 2 stroke and saturated the filters, making the bike run rich. I have memories of washing them out then spraying them up again with that red filter oil every month or so; horrid job. Never bothered to try them since. 
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