Few weeks ago, I changed my Focus air filter with Pipercross air
filter, especially designed for Focus 1.8.
Performace wise, very2 satisfy. 1st & 2nd gear can really fell the
different when I use the original air filter. At 5th gear.. the car
still "kick" (even though I've already > 100 km/h) when I
accelerate & can easily over-take with 5th gear.
The only problem (I think it is not really a problem?).... I notice
the RPM is slightly unstable when I am on free gear. My concern
is...
1) will it cause problem in the long term?
2) I understood that for Escape, Zetec engine will "self" adapted
to driver's driving style... is it the same case for Focus?
Fordies... your comment is very much appreciated.
