if it's a 987.1 that's port fuel injected without bigger injectors and upgraded fuel pumps, I would totally agree. If it's a 987.2 and is direct injection, I would disagree. DI is much better for fuel atomization and designed to be capable of running leaner afr's at higher power levels. It's what makes all the upcoming turbocharged factory engines from all the different manufacturers sable to keep power levels up while reducing emissions. Plus, it all depends on the strength of the factory bottom end components.Realistically with over 11:1 compression, **** gas and a less than optimum rotating assembly pushing for a lot more power than the TPC kit delivers in a 987 is a recipe for disaster.
Can you roll your own and do better on power and price? The components aren't hugely expensive but programming and dyno time are. And if you want big numbers new rods and pistons are necessary.
As for dyno tuning...do you plan on driving your car on the dyno or the street? Dyno tuning is really only good for max power runs.
are you using a boost controller? If not, you probably are just running off wastegate spring pressure, in which case you wouldn't build boost past that point. Either way, you'd be perfectly fine. As far as how long the car will last at your power levels, you'd really have to know what the bottom end is made of and be running egt sensors and monitoring your afr's and timing to see if the ecu starts pulling timing on you as egt's go up. Something like that would actually be good to do on a dyno, but imo your final tune should be done on the street/a roadcourse for proper drivability.The 10 psi of boost is the peak boost, not sustained boost. My boost/vac gauge is in bars. Peak boost is about 0.7 bars (about 10.3 psi)...perhaps the waste gate prevents higher boost. However, the amount of boost in *normal* or usual driving is usually about 0.3 bars (about 4.4 psi). I seldom push it to get 0.7 bars. In the 3-1/2 years I've had the set up, I've not experienced any problems...of course I'm keeping my fingers crossed.