Why isn't meth inj. more popular in SR20 world?

[Seraphim38]

It seems that on pump gas the SR20DET hits it's limits at between 400-450rwhp at 20psi +/-, and yet a GTX3071R or larger can do a lot more than that if turned up to 30psi.

In the subaru and mustang worlds, methanol injection is pretty common. I had it installed on a supercharged mustang cobra I had a couple years back. As long as you monitor the water/meth level and maintain the system it seems like the benefits would be there for the SR world, no?

I know that some people don't believe that meth systems are reliable and if you tune for it and then it doesn't flow, you can destroy valuable engine components.

Another option is to use unleaded race gas / pump gas mix. I used to mix race&pump with my motorcycles in the past, and didn't care as much about the race gas because I didn't have O2 sensors and a cat to destroy with leaded fuel. Has anyone had success with regularly driving with an unleaded / pump mix?

I can guess that first there are few people who build SRs to 450+rwhp levels, and of those who do it's possible that many are drifters who don't daily drive their cars.

I have a GTX3076R in transit to bolt on a full race/sleeved/solid lifter no holds barred SR. I don't really think it will be able to stick much more than 400rwhp anyway even with the 275/40/17 Nitto NT05s that are on the car, but I can't help but be curious about turning up the boost to let the GTX turbo do it's thing.

Thoughts?