Underdrive Pulleys

[u33db]

Just seen some yank site banging on about these thing - basically just an alloy, lightened item to turn the alternator belts etc slower....

Would there be any real gains in this? Surely if these belts are turned lower then the engine has more ooomph.....??

Opinions!

 

[Bagus]

Surelly there gonna be gains(and if you have other mods the gains will be more)but the problem is that I couldnt find anything for Renaults......Have you found something???

ps-For Mazda Mx5 those pulleys say that give an additional 5-10hp!!!!!

 

[u33db]

No, not found anything for renaults but it was the mazda details that caught my eye! I would assume that maybe some of them might fit but dunno!