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Re: Getting new '83 900T tomorrow - what can I do
Posted by MS (more from MS) on Wed, 4 Aug 2004 23:56:40
In Reply to: Getting new '83 900T tomorrow - what can I do, Saabpilot
[Profile/Gallery]
, Wed, 4 Aug 2004 19:04:23
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If you're thinking an 8V engine will ever equal the 16V even with performance modifications, you would be incorrect. But if you're doing it as a fun project, then you can do quite a few things. Adding an intercooler is one of the easier performance mods you can do with that 8V engine. Lots of folks have done that, including yours truly. Head porting and exhaust upgrading is always possible. Turbo, APC and ignition control upgrading are doable, as well as flywheel, clutch, suspension and drive train improvements. Tweaking the CIS fuel system I don't know about. Problem with the CIS is that the fuel line pressure is determined mechanically, with a narrow control pressure setting which regulates the line pressure (and fuel air mix) from idle to full throttle. Depending on how much added HP you're looking for, at some point the stock CIS system will not be able to pump as much fuel as needed to avoid engine knock, what to speak of still being able to idle normally and pass emissions testing. Adding at least one fuel injector on the intake manifold and triggered with a boost pressure switch or throttle position sensor is one way to increase fuel and bypass the limits of the CIS system.
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