AFR and FCD mods
Discussion
An AFR? Not sure what one of these is. Do you mean an AFR gauge? (which gives no performance benefit - just a means of seeing if you're running lean)
An FCD similarly won't give you any extra power either - it is simply a means of stopping the car switching off the injectors if you turn the boost up too much - so is simply a safety system bypass. Personally I don't like them as they aren't actually fixing the problem.
What are you trying to achieve? I've had a hand in tuning quite a number of Imprezas now so may be able to give you a few hints. (See my profile for some details of the two I've owned) You should be able to get to something like 260 bhp from your car (I assume it's MY98) with an ECU remap (or PowerFC) and no engine mods.
Impreza engines are also pretty robust as long as you don't let any detonation happen - eg by letting them run lean on boost!
An FCD similarly won't give you any extra power either - it is simply a means of stopping the car switching off the injectors if you turn the boost up too much - so is simply a safety system bypass. Personally I don't like them as they aren't actually fixing the problem.
What are you trying to achieve? I've had a hand in tuning quite a number of Imprezas now so may be able to give you a few hints. (See my profile for some details of the two I've owned) You should be able to get to something like 260 bhp from your car (I assume it's MY98) with an ECU remap (or PowerFC) and no engine mods.
Impreza engines are also pretty robust as long as you don't let any detonation happen - eg by letting them run lean on boost!
dnb
Thanks for your words of wisdom. I'm very happy with the current standardish set-up even with the boost 'off'. It is such a joy to drive, so balanced. I've only considered modifications since a friend has been offering me bits and bobs. Perhaps further down the line when I have settled a little more with the car (and the bank balance has settled!), I will think about mods. Re-map, de-cat pipe and tightening the handling up would rank high on my list. Nothing too stressful on the car. I will definately seek advice from yourself nearer the time.
Cheers, Glenno
Thanks for your words of wisdom. I'm very happy with the current standardish set-up even with the boost 'off'. It is such a joy to drive, so balanced. I've only considered modifications since a friend has been offering me bits and bobs. Perhaps further down the line when I have settled a little more with the car (and the bank balance has settled!), I will think about mods. Re-map, de-cat pipe and tightening the handling up would rank high on my list. Nothing too stressful on the car. I will definately seek advice from yourself nearer the time.
Cheers, Glenno
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