turbo timers good if used properly allows the turbo to cool down when the cars stopped gauges are also good again if used allows the user to set boost up properly and keep an eye on over boosting, do you know how much boost the cars running? With the J performance mani they are the cheaper ones, many people have had them years and never had a problem with them, but also many have had them cracking and breaking so just be prepared for that you say it has a fse adjustable fuel regulator? thats used mainly with a fuel cut defender to stop fuel cut when modyfying and raising boost. any ideas if it has a FCD as youve not mentioned one? if not you may find it will hit fuel cut when putting your foot down, especially on cold mornings etc apart from that all seems ok. depending on what boost the cars running the only thing id reccomend to improve things with that set up is maybe an uprated fuel pump. tuning developments/ walbro etc