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911st 911st is offline
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Join Date: Jan 2004
Location: Sacramento
Posts: 7,269
Sounds like you have a one bar boost spring which is good for about 30hp. If you keep it you will need an upgrade intercooler and the Koklen has been concidered a good choice. Otherwise run great fuel and do not get carried away on hot days. To be safe, put a stock .8 bar boost spring back in untill you get an better IC.

With a euro 84 you have the better heat exchangers. Freeing up back pressure after the turbo is one of the best things you can do.

If you do a lot of cruseing and freeway work set you CO (Air Fuel Ratio) to stock settings. If you want better off idle acceleration and are running 1 bar set CO to 3.0 to 3.5%.

Next up is a more effecent turbo. If you are not getting carried away as to mods or HP get a turbo from a 91-94 Turbo knows as a K27-7200. They come in much faster and run more effecently so it will make more HP. This is a 15 year newer turbo design.

Free flowing exhaust, K27-7200, one bar, and intercooler make for a great running 930 and can make up to 80-100 more HP than a stock US 930.

Old 12-12-2009, 05:18 PM
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