lightweight pulley ?

hi mates does anybody with lightweight pulley has any problems with it ?
i had install 2 times in previus cars with no problems but as i have learn in japanese cars the crankshaft is balanced without pulley so a balanced pulley is no problem ...what about the renault engine ? also if the pulley is problem why the lightweight flywheel is not ?
greeting from greece
 
As long as it is installed correctly you won't have issues with it.

The designer of the pulley used it in his race car for 40000kms.

You will have to accelerate more if you are in stop start traffic, as it does make the car easier to stall.

Sent from my EVA-L09 using Tapatalk
 
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There’s loads of people using the one you can buy from Rene on here (myself included) with no issues. There is another design (copy) but I haven’t heard any reviews for that. Id suggest to buy the one off here.