My ’98 is quite a dog, doesn’t seem to pull very strongly, although it
runs well and smoothly. Looking for chips/mods to liven it up some.
I also have a cel--knock sensor. Is this normally sensor failure or
wiring corrosion? My exhaust pipe is black inside indicating rich f/a
ratio, how can I check for closed loop fuel system operation? Thanks
for any and all help. Russ

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On Sep 15, 12:22*pm, rusty43 <n...@000.com> wrote:
> My ’98 is quite a dog, doesn’t seem to pull very strongly, although it
> runs well and smoothly. *Looking for chips/mods to liven it up some.
> I also have a cel--knock sensor. *Is this normally sensor failure or
> wiring corrosion? *My exhaust pipe is black inside indicating rich f/a
> ratio, how can I check for closed loop fuel system operation? *Thanks
> for any and all help. *Russ

The most popular mod for these cars is to replace the 2.2 with the
2.5.... ;-) As far as the knock sensor is concerned, it's very simple
to replace. Costs about $100 at the dealer.

Dan D
'99 Impreza 2.5 RS (son's)
Central NJ USA

>
> The most popular mod for these cars is to replace the 2.2 with the
> 2.5.... ;-) As far as the knock sensor is concerned, it's very simple
> to replace. Costs about $100 at the dealer.
>

An the most popular repair for a 2.5 that has overheated because of head
gasket failure is replace it with a 2.2......