Yeah, Jeff is right in that the engines mentioned are completely undrivable on the street. For n/a motors, HP comes at the cost of drivability. You don't notice it as much as you start modding an n/a motor, but every thing you do makes it less drivable. Hell, some people would regard even my engine as a pain in the ass to drive, if given the chance. High HP n/a engines are VERY twitchy. However, the only thing I think Jeff might be wrong on is that his HP gain estimates might be on the high side. The bottom line is this; if you want some real power, staying n/a is NOT a viable option.
About CARB legal. No way. you have to have a CARB number for EVERYTHING that is not OEM in an engine bay. Air filter, header etc... and it doesn't matter if you still have a catalytic converter somewhere, it HAS to be OEM, and in the OEM position. Also, test-only stations are not smog stations that do only the sniffer. By law every smog test in California has to pass a visual inspection to pass the test. If you're going to modify your engine, you're going to have to be willing to pay the prices, in Cali at least...
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