15 replies to this topic

[tomtaylor1994]

Hi all,
I have a '98 Rover MPI 1275 and would like to stick a new air filter on it...
Does anyone have experience with either the K&N or piper cross Multiple point injection filters and which one would you recommend?
Thanks in advance :)

[Mini_Magic]

They'll probably be almost exactly the same, except for the way they look.

You will get no noticeable difference in performance, but they may sound a little different depending on the design.

The K&N on a MPi does give it a very nice sound on acceleration and overrun.

[nev_payne]

I'd recommend the K+N as an insert to the original filter housing instead of the cone n' pipes. After a whle the pipes just cheese you off when you want to do anything in the engine bay.

[tomtaylor1994]

They'll probably be almost exactly the same, except for the way they look.

You will get no noticeable difference in performance, but they may sound a little different depending on the design.

The K&N on a MPi does give it a very nice sound on acceleration and overrun.

No difference in performance? I thought that was what air filters are all about :/

[tomtaylor1994]

I'd recommend the K+N as an insert to the original filter housing instead of the cone n' pipes. After a whle the pipes just cheese you off when you want to do anything in the engine bay.

Hmmm, so they're noisy?

[nev_payne]

Definitely noisier than having the air filter housing. I'd take an easy to maintain engine bay over noise - get enough coming out the exhaust nowadays.

[tomtaylor1994]

Definitely noisier than having the air filter housing. I'd take an easy to maintain engine bay over noise - get enough coming out the exhaust nowadays.

Thanks for the advice :) and is it true I won't see an improvement in performance?

[Mini_Magic]

You don't have to have those extra pipes though, they do little to get cold air to the filter.

I had a cone filter, same as the above but without the pipes, and had no problems.

[mini-luke]

Pretty much, yup.

[JakeJakeJake]

Definitely noisier than having the air filter housing. I'd take an easy to maintain engine bay over noise - get enough coming out the exhaust nowadays.

Thanks for the advice :) and is it true I won't see an improvement in performance?

I believe he means between the two. Will be better performance than standard

[Mini_Magic]

I believe he means between the two. Will be better performance than standard

I actually meant between a "performance" air filter and a standard one. The power increase is very little really.

You'll only really notice a slight power increase if you put the car on a rolling road.

Still worth getting one thought, just for the sound it makes!

[JakeJakeJake]

Can't really rolling road a MPI ;)

[ANON]

Can't really rolling road a MPI ;)

it's got wheels and an engine so you can ;)

[mini-luke]

Yes, but you won't be able to change the fuelling at all as the ECU cannot be altered.

[ANON]

no one was talking about fuelling, only power gains with a different filter.