Re: Differences between SD and SPG9 FPR? - Saab Performance Bulletin Board - Saabnet.com
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Re: Differences between SD and SPG9 FPR?
Posted by MattR (more from MattR) on Sun, 28 Jan 2001 14:57:05
In Reply to: Re: Differences between SD and SPG9 FPR?, BobJ, Sun, 28 Jan 2001 12:21:13
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Agree and use the piggyback SD system. Now able to run the factory 2.5bar fpr with a much larger injector without running rich at idle because of an increase of fuel pressures.I had trouble getting through emmisions with a 30lb injector and a 3.0 or 3.3 bar fuel pressure regulator. I get through easily when using the 2.5 bar and the piggyback. The piggyback unit only provides additional fuel pressures when under boost and won't simply increase fuel pressures under all conditions.
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