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Sorry to jump in late in the conversation. I just wanted to put my two cents worth in on the 22ret. I rebuild a factory turbo engine for my toyota 4x4. In the conversion for my truck I got the turbo AFM, turbo ECM. I tried to put the truck stock and I had the same problem of hitting fuel cut before the turbo would really begin to create boost. I changed fuel injectors to 450cc. I was also running a T3/T4 hybrid turbo with a blow-off valve and on intercooler. The bigger injectors helped a lot. I could boost to a steady 20psi boost before hitting fuel cut, and sometimes I could even get to 25psi. I did encounter a problem though. The head bolts would stretch under high boost and it would cause my head gasket to fail. I went through 3 head gaskets in 500 miles. My two cents worth are: if you want high boost it would be a good idea to run ARP head studs or something equivalent to keep the head down. I should have done what I just mentioned, but after 3 head gaskets I was so sick of the turbo setup that i went to a V8. Good luck with the turbo setup.
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