The first thing I'd say here is the opinion of people who have driven all these different variants is worth significantly more than the opinion of those who haven't. Turbos vs. Superchargers is an old argument on the internet, but theory vs. reality is another. What charts show and what theories say is pretty useless when it comes to the rubber meeting the road. I'd also note that goals can make detailed analysis more important or less important depending on your definition of the term. If your goal is "have a huge torque hit at 2k rpm" or "go 230 mph in a standing mph", you'll want to adhere to a specific plan. If your goal is just "have fun in my car" I wouldn't put nearly as much stock in all the theorizing and mathematical analysis. Just drive or ride the two types and you'll be able to come to a decision a lot easier.
Here's my thoughts on the lag situation: My car when it had the pulley and tune made about 530 lb/ft of torque at 4k rpm, and if you stabbed the throttle, it would spin the tires and slide you sideways. My car with the TT setup (and I don't have the graph in front of me, so this is an approximation) made at least 150 rwtq more than that at 4k rpm. If you are at 2k rpm and you stab the throttle in third gear, you will not get the instant hit of torque that you do from a blower car, but to me, it's really all relative. The turbo setup is so $$*%&( fast that by the time you've contemplated any lag it has, you'll be going fast enough to kill yourself and anyone else around. Just think, in the first C&D 0-200-0 shootout years ago, Peak's TT car went 0-100 mph in 6.1 seconds and 10.6@152 mph on street tires. It's a car that will go 60-150 mph in 5-6 seconds, so you really don't have to worry much about waiting around for the fun. Ultimately, when I'm in the GT, I'm going fast, and therefore what the car does between 2-4k rpm is significantly less important to me.
I also agree with Kendall and Skyrex. I didn't have much to say about turbocharged GTs until someone let me drive one. And that was all she wrote.
Here's my thoughts on the lag situation: My car when it had the pulley and tune made about 530 lb/ft of torque at 4k rpm, and if you stabbed the throttle, it would spin the tires and slide you sideways. My car with the TT setup (and I don't have the graph in front of me, so this is an approximation) made at least 150 rwtq more than that at 4k rpm. If you are at 2k rpm and you stab the throttle in third gear, you will not get the instant hit of torque that you do from a blower car, but to me, it's really all relative. The turbo setup is so $$*%&( fast that by the time you've contemplated any lag it has, you'll be going fast enough to kill yourself and anyone else around. Just think, in the first C&D 0-200-0 shootout years ago, Peak's TT car went 0-100 mph in 6.1 seconds and 10.6@152 mph on street tires. It's a car that will go 60-150 mph in 5-6 seconds, so you really don't have to worry much about waiting around for the fun. Ultimately, when I'm in the GT, I'm going fast, and therefore what the car does between 2-4k rpm is significantly less important to me.
I also agree with Kendall and Skyrex. I didn't have much to say about turbocharged GTs until someone let me drive one. And that was all she wrote.
