I have not maxed the thing out yet. I am still debugging and tuning so I don't know the answer to the question actually.
I have not run up against it yet, I'll put it like that. I have an
86 turbo to replace it if I want. Jay at TM tells me he designed the kit for at least an 87 turbo or bigger, like a TA49.
Yes, I am running a 86 ECM. Right now I don't have a good
oil fill tube seal and the check valve that Jay supplied in the kit is not hooked up right, so it is blowing oil alll over the headers and
under the hood. A real mess, so once I get past this, I'll do some more test and tune. But the power is definitely there!
Power brake and it breaks loose on dry pavement with 236/60 tires at about 2.5 # boost!