Tuning Midrange Power or High

[macoman69]

I understand the pro's of having midrange power tuned but wouldnt you want to tune your higher end as well.

I ask this becuase i see so many ppl raving about how there midrange power has greatly increased. But then i say to myself "well what would happen if you had tuned your powerband to have a little more power up at the higher end say example from 5000rpm all the way to 8600rpm?

Also what are the different tuning methods that ppl take.
For example (tune low end or tune high end?)

[Muzz]

I understand the pro's of having midrange power tuned but wouldnt you want to tune your higher end as well.

I ask this becuase i see so many ppl raving about how there midrange power has greatly increased. But then i say to myself "well what would happen if you had tuned your powerband to have a little more power up at the higher end say example from 5000rpm all the way to 8600rpm?

Also what are the different tuning methods that ppl take.
For example (tune low end or tune high end?)

I think your slightly confused here. When somone gets there car tuned, the tuner works to get the best power all through the power band, he dosnt tune the computer to have more power in one section compared to the other, he works to get the best power all through the rpm range.

Its the parts/modifications that effect how much power is in different areas of the power band. For example, a manifold might be designed to get optimum results at high rpm, where another might be designed to work at its optimum around the middle of the power band.

Its hard to design power adding components that work at there optimum through the hole rev range, for example, in that intake manifold i mentioned above, the air passing through it will be changing in speed, volume and also densitly as the rpms increase. therefore it is impossible to design it to work equally all the way through the rpm range.

Another example is camshafts, lumpy cams, will be wild and flow great at high rpms, but at low rpms, there far from working in the optimal manner. This is the exact theory behind vtec - two different cam profiles in the one cam. One works well at low rpms, and switches to the other profile which works well at high rpms.

Some things can be adjusted which alter where the power lies, such as cam gears. They can be tuned to get more power where you want it across the range, but just like the manifold above, where ever you decide to set the timing on the gears, it is going to work at its optimum at one stage across the power band, and at all other stages it wont be fully working at its optimum. Eg. you can adjust it to get good high rpm power, or adjust it to get the mids, or even the lows. but u gotta chose where u want that power, you cant get it to work at its optimum from the mids all the way up to redline for example.

hope this helps:thumbsup:
muzz