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Re: Viggen question
Posted by AlaskanViggen (more from AlaskanViggen) on Sat, 30 Apr 2011 12:55:59
In Reply to: Re: Viggen question, eric, Sat, 30 Apr 2011 10:47:24
All Viggens have the torque limited in first and second. I believe the reasons are two-fold. First, it helps protect the drive train from destruction, as having that much power in a low gear would cause a lot of extra wheelspin/hop and forces bouncing back and forth throughout the system. Second, it protects the engine from over-revs because the RPMs rise really fast in first gear and would easily take you by surprise. The rev limiter would not be able to help much as the engine is revving too fast at that point. So with the torque limited in first and second, odds are good that you won't be able to exceed the rev limiter by very much.

One thing I've always wondered is how it knows you are in first or second. I don't remember seeing any sensors in the shifter. It is possible that it is simply a software solution where it doesn't let the boost rise beyond a certain point unless the RPMs are rising below a certain percentage.

You can get these limits removed with custom software, but you would want upgraded: suspension components, subframe brace, motor mounts, clutch, short-shifter... And maybe a couple driving classes...

posted by 66.230.11...
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