Been thinking, maybe overthinking, but I've noticed the shape of the Beta1 and Beta2 inlet manifolds are completely different, one has short fat plenum with short runners (Beta2), other has longer, much thinner plenum with longer runners (Beta1). Would there be any performance gains in putting a bet2 intake on a Beta1?

I know the idle air is external, and I'd need to connect MAP up somehow, but I have plenty of pipe fittings at work, so drilling, tapping and putting an NPT pipe fitting won't be a problem.

 

yeah the beta 2 has 20mm longer runners and an 8% smaller tank it would give you some gains on a n/a motor.

 

Unless UK specs are different, it's the Beta2 has the shorter runners.

 

its possible have you taken them off to look at them 20mm isnt alot

 

unless it is because you are not from the US, get a beta 2.5 manifold with the maf based setup. 2004 to 2006 elantras. If you have a map setup in your tib I dont have any advice. Consider the manifold from the HD elantra as well. some have speculated that it has a higher flow capacity

 

Im from uk. Our gen3 tibs are hd not gk. Will get pics of the 2 i have and post them, best way to avoid confusion.

 

so is your coupe a maf or a map based system. and by beta 2.5 i meant the cvvt version. i know there was never really a 2.5 but sometimes it is refered to as that

 

Its a cvvt manifold i have spare. I know its a MAF engine, and my current tib has an older MAP, but i can sort that, and idle control. What i want to know is whether its worth trying?

 

These are the 2 I've got, the one on the left being from a Beta2, the right one a Beta1.







Also, whats this extra hole for? It's on 2nd runner from the right.

 

20mm is allot.