The chip is called "SuperChips" and which I think is from an UK company. However, I can't find anything specific for 996TT (but for 944 only) on its Web site. And again, the tuner still claims that the peak boost could be something like the 1.5bar and maintain around 1.1 - 1.2bar most of the time after the mod. Well, I agree with you RC, and I also don't feel comfortable by doing this kind of mod. which leaves uncertainties...So, RC., any advise for making the chip level mod.? What about either the Gemballa, or TechArt? And what is the boost ratio for both? BTW, mine is '01 model w/Tip. Thank you and good day!!