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Tuning Styles

General Tuning Discussion

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hello, I'm new to the forums. i have taken a few courses from here and wanted to get more of differences in the usage of tuning cars (EX:drag racing, mile racing, circuit racing) I understand and tune very well for power tuning but have no experience tuning for any event tuning. would you think a course or webinar would be added for this?

I'm not sure I understand what you mean sorry?

Can you elaborate a little on what you want to learn about?

Like is there a difference from tuning for power or tuning for a drag event etc... Or is it the same.

There is some differences. Im sure Andre will elaborate abit more but there is differences between a drag car and a endurance circuit racer...

A circuit racer spends long periods at high rpm continuously so you may want to be a little more conservative with your tune. You may also need to tune with fuel economy in mind if pit stop and making the tank last are a issue.

Also a dedicated race car vs a street car you may not want to spend as much time in the low load and cruise areas...

Yea that's the kinda stuff i know little about as i usually tune street cars but i am trying to adopt other racing types. but want to make sure i approach them right.

A lot comes down to thermal management - Managing the heat in the combustion chamber. The amount of heat will depend on the specific power level of the engine but also on the way the engine is being used. For example a drag engine will make very high specific power levels but only for a brief amount of time. We can therefore be a little closer to the edge with the tuning. On the other hand a circuit car will see lap after lap of full throttle use and hence the average load on the engine will be higher. In this case we would generally need to use a richer mixture to control combustion temps and prevent damage to the engine.

The other consideration is endurance racing where fuel economy is critical. In this type of event we may well be prepared to give up a little power in return for better fuel economy. A leaner mixture, perhaps coupled with retarded timing to prevent the chance of detonation might be beneficial here.

The key is understanding how the engine will react and what you need to do to manage the thermal load on the engine.