I cant believe this is even a debate. Its a 300 pesos manifold ffs. Nobody in their right mind is going to say its as good as the high end stuff.
What it is though is great value for money for the builder on a budget,I used it simply because it was convenient at the time. Pluses outweigh the negatives as far as I'm concerned.
A. price
B. performance
C. durability
As the dyno showed all these twats saying angle this and angle that are just that...twats. the manifold flows without restriction, If exhaust gas flowed in the opposite dierection the merge collector would be far more relevant, as it is 6 pipes feed in to the exhaust housing regardless of the shape of the merge.
I've run up 5 k on it so far. Its rock solid, no warping cracking leaking or shifting whatsoever.
Would I use one on my big engine...No. Plain and simple. Not because I m afraid it wouldnt work, merely because I cant get my head around a cheap job for a high end engine.
Bang for buck this is one of the best mods I have done to date.