I'm currently running a 2 bar SD tune on my turbo lsx. I'm maxing the MAP out now and think it's time to step up to a 3 bar map. I have a couple of the rectangle 3 bar old style GM sensors, are there better/more accurate ones out there or are these okay?

As far as moving my tune to 3 bar, from what I've read, it looks like the 2 & 3 bar maps operate on the same OS with the only changes being the scaling of the map sensor and that it will now pull data from the rest of the boost VE table and boost timing table? Is this correct? If so it looks like this will be a very simple swap....

Thanks