Dyno with 3rd or 4th or 5th gear effect whp reading?How about FD gear ratio.

sarutobi84

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Hi All,

Anyone here have experience different reading when dynoing with different gear(example 3rd or 4th or 5th) on a Dynojet?

Knowing that dynojet utilizing fix mass and how fast(time) to accelerate the dyno roller,so I was thinking if we were to use lower gear,examples 3rd gear ,we may have better acceleration/shorter timer compare to dyno with 4th or 5th due to shorter gear ratio which may lead to higher whp reading?
I heard some tuner will use gear with gear ratio near to 1,but does the final gear ratio also effects such as changing from 4.3 to 4.7,this will further increase the acceleration time...

I'm afraid if we combine engine mod with gear ratio mod,we may be confussed by which one is impacting the whp increases most.

All the above question only applicable for dynojet only,due to the dyno concept,as far as mustang dyno and dynopacks/ dynamics which have variable load.I believe the whp reading should be consistent
 

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