Gav,
Plugs fouling could be due to either the tune OR spark plug type.
Do you have colder plugs?
Are they 7's / 8's / 9's???
With 25-30psi you should use something around the 8 heat range. Trial and error really.
6's are standard
Tune wise, are Haltech. Can you select your injector?
Does it have an idle map?
Is the o2 changing when you play with the tune?
As for box. It's really how long is a piece of string type thing.
From both what I've experienced and have been told, the evo3 box should be fine for what you have if it is in good nick BUT in saying that, it won't last forever. It will eventually break.
There are things you can do to prevent it from breaking but even once you do that, it will eventually break.
As for turbo. What do you have at the moment? A T51 isn't very efficient on a 2.0L.
Yer they are a heat range 6 coppers atm, i might bump the rating up a bit, but will confirm wiht my tuner first. But form talking to him its rich as hell at idle becasue of the cams (just have to look at the exhaust and you can tell anyway lol).
It has an idle map using the TPS not vac... As found the vac way was giving a worse tune for the idle.
Yer i realise it not going to last for ever, specially once i start taking it down the track.
ATm the trubo is a gt35R with a 1.06 Housing ( i still getting used to saying this is a big turbo hahah)
The T51r might be a little on the bigger size but the Kia is only rated 100hp more then the 35r and i plan to redo the manifold plus reduce the housing size.
Edited by What-Lag, 27 June 2010 - 10:21 AM.