I have a L20B w/single 45 dcoe.if i switch to dual carbs will i gain horsepower/toruqe or it does not make a difference.its a weber carb.is there any carbs better??

if you a truly looking foe performance, and consatntly adjusting carbs at least once a month then I wouls stick with a single carbs, however twin SU carbs are known to stay at there setting but they are hard to calibrate so it all boils down to waht you are looking to sacrafice for performance. or ease of use so if you have the patience and the know how go for it

If you are after outright performance and the manifold is redily available where you are get the twin webers.

I am surprised to hear twin SUs are hard to calibrate, whenever I have put them on a datto it has just been a matter of balancing them by ear with a length of garden hose, and bobs your uncle.

I just bought a ute with L20B and twin SU's, the guy i bought it off said a single 45mm weber would be better: perform better, easier to tune and sound better