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Re: 300 HP is a good goal :-)
Posted by Gregg C [Email] (more from Gregg C) on Sat, 21 May 2005 21:52:07
In Reply to: Re: 300 HP is a good goal :-), Eric van Spelde, Fri, 20 May 2005 06:10:09
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"real world performance comes from optimising the area under the torque/power cuves over as wide an rpm band as possible, not just chasing after a randomly chosen peak hp #. (Note that the graph indicates over 200 hp from just over 3,000 rpm up to the redline)."
Very nice dyno result. One of the better dyno sheets I have seen on the site. I totally agree with Eric on this. There seems to be an over importance developing on ultimate horsepower. I don't think that that is what we should be concentrating on with our four cyl. turbos. My first project car was a b motor into an '80 99 notchback. With the big turbo on the first gen '78 and a fifth injector system I was able to get quite a rush when it wound up passed 3,200 rpm. I am sure that the horsepower was up there but it was still not very useful for much of the driving I did. It required being on the cusp of the power to utilize. (It is kind of interesting to remember that the first 99 turbo rally cars were actually detuned to make them more drivable under race conditions.)
If your planned tuning will lead to a better torque curve UNDER you peak horsepower then you will be on so some real world improvements. Improving the exhaust, head work, a well matched turbo and control over fuel and spark are tried and tested methods that work.
posted by 24.41.3...
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