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WERK I WERK I is offline
Forced Induction Junkie
 
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Join Date: Jan 2003
Location: Wisconsin
Posts: 3,291
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The return line on fuel injected engines allows the fuel to cool. This is necessary because the pressures in these types of engines create unwanted heat.
When fuel pumps wear, the rated fuel pressure may drop off when the highest demands (Max. HP) are placed on the engine. If the injector output is within factory specs at maximum demand, then you may be ok. If you plan on elevating fuel pressures to get higher injector output, a different pump may be in order.
If you have the type of Bosch pump in use, check the specs to make sure it is capable of delivering the fuel requirements for a 300HP engine.
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Dave
'85 930 Factory Special Wishes Flachbau
Werk I Zuffenhausen 3.3l/330BHP Engine with Sonderwunsch Cams, FabSpeed Headers, Kokeln IC, Twin Plugged Electromotive Crankfire, Tial Wastegate(0.8 Bar), K27 Hybrid Turbo, Ruf Twin-tip Muffler, Fikse FM-5's 8&10x17, 8:41 R&P
Old 01-18-2010, 12:29 PM
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