Piper cross v K&N

Have K&N filter on my Trident with no problems, although it was a bit of a tight fit in the airbox as I remember it. At least once it's in it doesn't need much attention thereafter, which is A GOOD THING! He who designed the airbox on the Trident should be made to remove and replace it at least once per day!
How the Piper Cross version compares is anyone's guess! Can't help with that one.

 

Hi Chiari, can I ask why you are thinking about using replacement after-market air filters? If it's to get more air into the engine the best one to go for - as tested by Triumph Twin Power - is the DNA air filter. Similar style to the K and N one but flows more air.

 

Hi Chiari1 I have a K&N filter which you can remove and clean and re-oil the difference between the factory paper one makes a lot of difference in the way engine breaths and without having to remap ecu or cause engine check light issues, I have found because the UK does'nt have abrasive polluting conditions I do not oil my air filter and believe this extends cleaning times, I have also a straight through or baffle fitted road legal can to allow engine to vent better as well, you may need ear plugs for this type of can I am very happy with my K&N air filter that I bought a second one so when I clean the air filter I don't have to wait for it to dry out before refitting it.

 

Yup these filters shouldn't need cleaning for years unless you're living in a desert, sandy one not pavlova!

 

I have recently replaced a leaking seal on my engine on camshaft cover and due to the regular oil and filter changes in the past the inside of my engine is very clean that I was very happy to see and I will continue doing the same in the future

 

On the DNA website they do not seem to list filters for the older carburetted bikes.
If I was buying i would go the K and N way, pipercross are not so well known, maybe in the car world they are tho. Plenty of people, like Steve, have used K and N with no problems. I had one on a cb500 and all it did was make the induction noise louder but I do agree about the ease of cleaning opposed to renewing every time . My bike needed a complete airbox last time so is standard for now.

 

http://www.triumphtwinpower.com might be able to supply you with a DNA filter for a Thunderbird. If not, they may be able to point you in the right direction.

 

sorry if i got it wrong,i thought you had a thunderbird 900 triple

 

mmmmmm I thought so, you see some people seem to think a T /Bird is a twin, well some may well be but the best ones are a triple,lol. K and N best for you then if youre not going NOS route

 

Dooooo tell me you have wasted our very valuable time

 

What ever turns you on chiari1

 

lol can I watch??????

ok maybe it is me who should be thrashed.........yes please

 

OOOOHHHH .... make mine brambles!

 

Now THAT is kinky,lol

 

In his leathers of course

 

Hi, Not wishing to tread on anyone's toes but a high-flow filter will make the bike run leaner. If that same bike already has a performance can/s fitted that will lean it out even further (at least at the bottom of the rev range) perhaps to dangerous levels.

It would always be advisable to check the jetting/map when doing anything like this in my opinion. The last thing you want to be doing with the intention of pampering the bike is doing the exact opposite.

Lastly, for anyone doing filter and pipe you'd be well advised to re-jet or map as it is the increased, correct, fuelling that will deliver the performance from the increased flow in and out of the engine.

I'm not an expert by any degree but an simply regurgitating (as best I can) some of the advice I have been given including that from Bob Farnham when he has built race engines for me.

If in any doubt, ask an engine builder/tuner and have confidence in what you are doing - best of luck.

 

Completely agree with you Oscar.

 

This is correct any engine alteration should be checked by a engine tuning expert, fuel trim aided by exhaust sensors adjusts mixture if the engine management can not cope it will flag a engine warning/fail light as sensor would be running out of its tolerance but not all bikes have exhaust sensors or engine management but manufactures of these after market filters and cans do indicate retuning engine is required or not.

 

It may be different on the Triumph but my last bike a ZX9R engined ZX7R I installed a Pipercross and found I had to re-jet the carbs down from 182's to 175's compared to the OEM item because it didn't flow as much.