It might help if Saabs use a split housing turbo, do - Saab Performance Bulletin Board - Saabnet.com
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It might help if Saabs use a split housing turbo, do
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Posted by Winder (more from Winder) on Mon, 1 Mar 2004 16:37:48 Share Post by Email
In Reply to: davenew-viggenTO4-18 /w @6nozzel, ed smith, Fri, 27 Feb 2004 18:12:50
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they? this strategy is heavily used on diesel engines where all you need to do is turn up the fuel pump. The larger volume of fuel causes the exhaust pulse to be larger and in turn spins the turbine faster. It does add substantial heat and egt's go up. The exhaust turbine has to be small enough to spool up fast (or you have major lag) but it also has to be big enough to expell the increased volume or there will be pump loss. The compressor side requires an even more precise balance or you could have lean & rich spots in your curve. Do Saabs utilize split housing turbo's? If so, that will help your cause, if not the exhaust pulses will equalize which will minimize your plan of bigger injectors. Good Luck

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