custom intake manifold

[quattro-nick]

for the moment i have adapted a AAN manifold for my engine(sie picture). i have 520 hp and full boost
on +- 4000 rpm (gt3076r with A/R 0.82)
i wonder if i make a new custom intake manifold with the correct dimensions and a bigger throttlebody that something would change on my dyno graph like spool.hp or torque?
the head and cams or still origional AAN

[gnutz2]

longer runners would give better cylinder ramming at low rpm so better spool and shorter runners would allow better breathing so higher top end power. The throttle body will have little effect by going bigger, apart from ruining the drivability at low speed.



Sorry about that 😊

[quattro-nick]

longer runners would give better cylinder ramming at low rpm so better spool and shorter runners would allow better breathing so higher top end power. The thro

the thro???