Re: 2001 Viggen ECU stage 1 upgrade? - Saab Performance Bulletin Board - Saabnet.com
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Re: 2001 Viggen ECU stage 1 upgrade?
Posted by kurt [Email] (more from kurt) on Sat, 29 Nov 2008 13:13:52
In Reply to: 2001 Viggen ECU stage 1 upgrade?, Brett, Fri, 28 Nov 2008 21:00:05
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I think you are going to have a difficult time getting 270-290 without improving the exhaust. A different downpipe, one that flows better with less restrictions is the key.
Going to a larger diameter exhaust will not give you any (noticable) hp gains, but you do gain way better spool up, which makes the car more driveable, and lets the tuner tweak the ecu to give you the gains you want.
WIthout changing your exhaust you are trying to push more air through the system built for lower hp, and that becomes the limiter. You also run the risk of higher egt. My .02
Kurt
97 aero maptun/3
00 viggen
posted by 97.116.53...
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