Some times adding too much HP junk will do more harm than good.
best bet is to do a baseline Dyno run on your all stock Grom to get the HP baseline.
Adding parts such as airbox mod afterwards and see what kind of HP gain/loss you get, maybe resetting the ECU would help first before going for a WOT run and doing a couple of laps to get the ECU to setup the correct mixture A/F that it needs.
I find that exhaust changes do add or remove HP on a motorcycle engine, I find that more so on my Harleys when I use superTrapp with adjustable plates that are added or removed on the tip of the exhaust.
Any changes with airbox mod and exhaust you'll see maybe 1/2hp to 1hp gain depending on the RPM range to me, more so you'll see a better response on pickup if the comb of mods is done correctly.
I find that some of my motorcycles esp my Hayabusa runs better in the cold or rainy weather than the warmer weather due to the density of the air.
I find removing the battery connection for a few minutes seem to help out with resetting some ECU parameters.
All my mods will be done in stages after I get a baseline dyno run so at lease I know what is my starting point and if doing my mods increased or decreased HP.
Remember the correct AIR/FUEL mixture helps in HP gain/loss, increase in HP will be seen with a bigger cylinder but if your A/F is off and your restriction of intake and exhaust flow can cause HP LOSS.
best bet is to do a baseline Dyno run on your all stock Grom to get the HP baseline.
Adding parts such as airbox mod afterwards and see what kind of HP gain/loss you get, maybe resetting the ECU would help first before going for a WOT run and doing a couple of laps to get the ECU to setup the correct mixture A/F that it needs.
I find that exhaust changes do add or remove HP on a motorcycle engine, I find that more so on my Harleys when I use superTrapp with adjustable plates that are added or removed on the tip of the exhaust.
Any changes with airbox mod and exhaust you'll see maybe 1/2hp to 1hp gain depending on the RPM range to me, more so you'll see a better response on pickup if the comb of mods is done correctly.
I find that some of my motorcycles esp my Hayabusa runs better in the cold or rainy weather than the warmer weather due to the density of the air.
I find removing the battery connection for a few minutes seem to help out with resetting some ECU parameters.
All my mods will be done in stages after I get a baseline dyno run so at lease I know what is my starting point and if doing my mods increased or decreased HP.
Remember the correct AIR/FUEL mixture helps in HP gain/loss, increase in HP will be seen with a bigger cylinder but if your A/F is off and your restriction of intake and exhaust flow can cause HP LOSS.
