Because it's a tool for tuning and to monitor changes in your combination. Yes horsepower and torque numbers do play a role. Running your car has just as many variables that are in constant change. Are you telling me you wouldn't care if your car dynoed 25% less than a similiar combination? You wouldn't want to know why? Dyno numbers are part of a equation, dyno numbers, track times/mph and air/fuel quanity.

If your car is running good numbers and your tune shows that your moving fuel and air to support the horsepower than dyno numbers aren't important.

Dyno numbers are important because that is the standard used for measuring engine changes. If you put together a combination that consistantly dyno's 420 rwhp and you dyno 380rwhp wouldn't you want to know why? Loose convertor, bad tune, valve float.

 

No dynos are an important tuning tool but who cares about the end all number unless its your air/fuel. Also you last statement what if that was the case and then I picked up a tenth at the track. Would you say the dyno is wrong or the track was wrong?

 

I don't know depends on your 60ft, track conditions, weather, 1/8 mile time and mph and also your 1/4mph

 

Unless you built your car to be a (chassis) dyno queen, as said above it is a tool; It's extremely valuable to 1) Tune for the most power as a last step before going to the track, 2) Mimimize the # of runs tuning at the track. You can go out for weeks to the track for tuning, that might otherwise take an hour on the dyno. 3) Making sure your car is safe (AFR, leaks, etc) and fixing issues that could be dangerous to you, others or your car before you run it at the track.

 

I guess i'm just not as much as an internet racer.

 

[QUOTE=pddye;11602519]I guess i'm just not as much as an internet racer.[/QUOT
This thread is about how convertors affect dyno numbers if you don't think dyno numbers are important that's fine. If you notice most of the posts on here are about convertors, dyno numbers and 1/4 times. The whole point is how do convertors affect dyno numbers. That's it.

 

That's exactly my point and what affect a convertor has on that tool. When it's the middle of winter the dyno is all you have sometimes. Also taking your car to the track has a huge amount of variables. The purpose of this thread was to better understand how convertors work with all these different tools.

 

Alright never mind then. The looser converter will dyno lower. This doesn't mean you will be in your cars powerband when you mash the gas with the tighter converter but you will dyno higher. So there again the car actually might be slower since it takes a while to get into the powerband of the engine but the dyno numbers will be higher. The correct converter should be matched to your powerband. And the converter sponsors on this site are some of the best that know how to match them up correctly and have answered all my questions.

 

I just use the dyno as a tuning tool. My car only made 360 rwhp through this converter. But once all the tuning was done I had a pull made with the converter locked and it was over 390 rwhp (the more accurate number).

As long as the trap speed is right for my mods then I don't really care what the dyno numbers are.