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View Full Version : Worthless to dyno test an ignition system?



Dave562
09-04-2004, 11:25 PM
I've never dynoed a car, but I have read a lot of internet text about dynos. One of the things that I've read has lead me to believe that there is some varience with regards to power figures, in between different sessions. For example, tests performed on a car that has just been started, versus a car that has been running for about 45 minutes, will produce different figures.

Also, dynos aren't always correctly calibrated?

I just bought a Crane HI-6DI2 ignition system, because a friend of mine needed some cash and eventually I'll be dumping a lot more fuel into the cylinders. Now, will there be enough of a noticable horsepower increase to warrant doing a before and after comparisson? Or would such a comparisson be worthless because the gains will be so small, that they could be dismissed as dyno querkiness?

Hugh
09-05-2004, 10:02 AM
If you were making over 400hp and wanted to do the comparo, you'd probably see the change. However, since your ignition system is way more than sufficient for only 8psi on an SR, then you won't see a change right now.

I'm not saying its a bad investment, though. It will come in handy later. http://forums.freshalloy.com/images/graemlins/smile.gif

Dave562
09-05-2004, 05:32 PM
I'm not saying its a bad investment, though. It will come in handy later. http://forums.freshalloy.com/images/graemlins/smile.gif



Thanks for the reassurance. My thoughts were along the exact same line. The only reason I picked it up now, is because I got it for ridiculously cheap because of my friend's unfortunate misfortune.

Hugh
09-05-2004, 05:37 PM
I've been there. It's not the most convenient time for you, but the price makes it all worthwhile, right? Heh heh