Do not look at just the final power figure.
the is only one instant at a particular rpm point and load.
There are many more aspects to the tune than just that.
even 2 chips dyno'd on the same car may have same peak power,
but the graphs overlaid each other shows a very different story.
Also the way the car drives every day and normal driving is also not shown on a dyno.
some chips may have little more changed in them other than one parameter, some on contain a "map overwrite" over original code, some chips is basically a full re-code of the whole tune.
One easy way to see some of this, is whose tune can only be loaded with "original" code in ecu only.
How ever having said that, some tuners may have not coded something properly, when another vendor tries to re-flash ecu, encounters problems.
I have seen many strange products out in market place ranging from being worse than stock, to no much change, to gain with occasional issues, and to running well with no issues.
the is only one instant at a particular rpm point and load.
There are many more aspects to the tune than just that.
even 2 chips dyno'd on the same car may have same peak power,
but the graphs overlaid each other shows a very different story.
Also the way the car drives every day and normal driving is also not shown on a dyno.
some chips may have little more changed in them other than one parameter, some on contain a "map overwrite" over original code, some chips is basically a full re-code of the whole tune.
One easy way to see some of this, is whose tune can only be loaded with "original" code in ecu only.
How ever having said that, some tuners may have not coded something properly, when another vendor tries to re-flash ecu, encounters problems.
I have seen many strange products out in market place ranging from being worse than stock, to no much change, to gain with occasional issues, and to running well with no issues.




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