sr bogoy, ur speedometer looks slow but actually u cant depend on that already for accuracy because the rim and tire is different na eventhough u hav the same diameter sa stock, it is still afecting ur speed.. maybe a 3+% more kung ano ang speed mo, ex: 100kms/hr sa speedometer, add another 3% to that and thats ur average speed...kung sa chip naman, i dont kjnow the effect of it sa long run.. but be careful lang sa EFI mo, thats the possible part na maworn out or ma affected first... not unles you have your EFI clibrated/modified to match the speed or output ng chip...