1) A free air filter.
I can recomend the JR Filter (65mm intake diameter series). This needs to have the filter box removed and you must use a V adapter from the intake to the filter. (Recomended adapter is from the Thema Turbo LX models, if you can find at a used parts store).
Although there are many good factory made exsausts, I recommend you to order a handmade one to a specialized technician. If you speak Greek, or English, you can call Michael Loukakis in Athens, Greece to order -maybe- the best handmade exsaust available. Make sure to specify if your car has a silencer attached to its catalyst, because the type is completely different. Tel.: +30 937776275. If you prefer a branded one, go to WWW.Supersprint.com (Delta Force guarantees performance!)
Try fitting 3 or 4 point (splitfire type) plugs to your car, making sure that your alternator can handle the increased amount of power produced. Not only you will see a great improvement in torque and horsepower, but the cunsumption (oh what a pain in the hood) will decline too. Fitting cables with greater voltage tolerance is suggested too. Try finding something on www.bosch.com
Delta HF`s turbo pressure normally operates no more than 1.0 bar (in overboost). The worst thing to do is try to alter the normal presure of the turbo, since it stabilizes around 0.7 bar. You can use, though, the overboost valve from the latest Integrale EVO series, that increases the overboost pressure to 0,3 bar (reaching 1,3) but forces the turbocharger to stabilze its normal pressure to 0.7, since this is electronically requlated. Get (if your finacial status bares it) a reprogrammable ECU...
