I have a MY01 sourced from Holland, and on occasion it hesitates when accelerating, especially when using half to three quarter throttle. My importer says there is nothing that can be done as Subaru would need to re-map the ECU and they haven't issued a re-map. Is this inherent across all MY01's or is it just mine, it is really frustrating and I end up flooring it, which helps a little, to eliminate the problem. I am also running it on Optimax and it makes no difference. Any ideas?

Similar probs here.Have a belgian MY01 import and must admit I've improved it by taking the centre and downpipe cats out of mine. Spool up is much better and no hesitation anymore. :D

Good luck

Nick

I have a UK MY01 WRX, and have the same hesitation problem. Dealer has tried, but they are pretty clueless. It also appears to have at least a 1 1/2 second breather after I hit the throttle, before anything happens. Combine the two problems and the result:

You accelarate along a short straight in say 3 rd gear, take the foot off throttle (it keeps accelarating for up to about two seconds after I take the foot off), so you are going faster than you want to be going into a corner. So you nail the brakes, change down to 2nd gear - turn in and accelarate - nothing happens until you are out of the corner. It's not good, in fact I think it's dangerous.

The dealer has reset my original ECU once, replaced it once, and reset the new one once. It's still the same.

I hate it. I'm losing faith.

Clubby,
I haven't had your problem of it continuing to accelerate, but it does on occasion seem to run out of puff. Example floor it in first and second, switch to third and at about 4,500 revs it just seems to cut the turbo and I have to shift up to forth. I know what you mean about losing the faith I sometimes wish I had kept my MY97 turbo, never had problems like this!

Have a look here

http://www.geocities.com/hobiegary/hesitation.htm

Why not trying a better grounding ?

Search for 'grounding mod' on the i-club Factory Forced Induction.

Mine is a Dutch MY01 and only exhibited that problem when running on the standard exhaust and boost. Removing the cats and changing the boost control has got around the problem (and it is a lot faster :D).

Duncan ;)

Edited to add - I suspected that the problem is due to the mapping being aimed at passing the EU emmissions laws and dropping boost at part throttle, hence being cured when you boot it.

[Edited by BugEyed - 6/10/2002 2:23:10 PM]