Aaron nobody is implying that your crazy or you don't know what you are talking about. I reacted to two things, first off the question was is tuning to 16 psi crazy on his mods. People jumped right in and said no. You showed a bunch of pictures of blown headgaskets and pointed out issues with coolant passages which are very viable concerns and will, if let go, blow at any boost level, but again this goes back to poor maintainance on a engines cooling system by maintaining correct ph levels by servicing your cooling system like your supposed too rather than running higher than stock boost levels.
7m's in Supras from the factory run to hot, average temps on the stock system are 200 to 220 degrees and this is without the a/c running. As you mention when you crank the boost up you make more heat, sometimes more than the stock system can deal with. This can lead to headgasket failure as well as the stock bolts being torqued to factory specs. In the mid 90's Toyota reengineered or upgraded the 7m headgasket and they aren't a bad design, but if you abuse or overlook all the other systems something is going to give. If a person didn't know the condition of their engine I'd agree with you 100% that blowing a stock headgasket is a more than likely consequence of raising boost levels, but a properly maintained engine/car with the proper tune and supporting mods should in my opinion be fine. Is he going to make that much more power by going out of the turbo's efficency range, I don't know but he does list an intercooler nitrous kit which should make things interesting to say the least.
Second was what seemed to be a personal attack on Dave, who is a very good friend of mine and one of the better 7m tuners most people will run across. Dave was one of the only people to point out him lacking an upgraded fuel pump and to be careful because of that. He was actually addressing issues with running safe at the boost levels in question instead of just saying no, can't be done.
Like I stated above I get tired of people putting limits on what these engines can or can't do, and no I'm not saying your doing that. These engines are very tuff and can take alot of abuse but you have to address everything and make sure that all of your supporting systems are up to spec.
Finally your are right about me being a smartass in my earlier comment and I apologize for getting childish, but if you read your comments on page 1 at the bottom maybe you'll see where I'm coming from. I do have two websites/businesses listed in my signature and one of them is Dave H. and Dave B's. site for selling Supra and turbo parts for the community, but like the website in your signature they are only there to help the community.
Bottomline running anything over 6-8 psi on a 7m-gte is pushing this engine past what Toyota said it would do or should do, so there is always a risk of hurting something. Make sure you are comfortable tuning cars at higher boost levels, make sure you have the correct supporting mods, and make sure you know the maintainance and history of the car your tuning. Any shortcuts in any of these steps with bite you in the ass.
Sean
