The car seems to hesitate after 5000 rpm does this in 2nd and 3rd gear.

She has done 45000 miles now, is this time to change the plugs and will this sort the above out ?

 

There are some flat spots in a WRX01 & if you move towards a PPP much can be ironed out though with an Ecutek (or similar) all flats can be ironed out (though this may come at a premium of mpg's).

Though the hesistation is more likely to be down to plugs......

 

Cheers xtreme ,should I stick with standard subaru plugs or use something else ?

 

If you got mods then PFR7B's by NGK are good.......

 

Which of the following plugs would suit her best .


1. Standard subaru plugs .
2. Ngk pfr6b .
3. Ngk pfr7b .



Car is standard apart from magnex mid and rear section exhaust .