I suspect a pre-LPT 9000 without a boost gauge is naturally aspirated, and there ain't much that you can do inexpensively to get more power out of it. There was a guy who reportedly got 270 hp out of a 2.3 NA NG900 (google "meatball saab"), but it must have been a ton of work and expense. They were 146 stock. A chip could get you to 160. An exhaust to 170. Cold air intake/filter on an NA, 5 hp more. Then it gets expensive. A header, downpipe and sport cat, maybe to 190. Cams, another 10. Port and polish, maybe 10 more. Big bore throttle body, maybe another 10. I've run out of ideas where you could get the other 50. But I figure I've already spent at least $4,000 on parts/specialty labor, plus there's a good $1,500 worth if you don't do any of it yourself.
posted by 38.223.231...
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