HELP!!4AGE small port/red top convert to silvertop quad....

[lolali]

hi all,

I got an AE86 with a small port 4age inside. The engine is stock except for a aftermarket 4-1 header.

and i've made a mod to the small port, as i got myself the adapter n the silvertop quad throttle, was so excited to bolt it on straight away.

After i'm done with the conversion, well, then engine start good, but then the engine is shaking like a dancing queen, when i try to rev the engine, the rev doesn't seem stable, n when i rev to higher RPM, the breathing of the quad doesn't sound good as well.

i've checked it over n over again, all the vacumn hose is all attached to where it should.

so i went to check other things, i've found that the 2nd combustion camber didnt work normally, when i shut the intake of 2nd camber, doesn't change on engine sound nor the rev, it happen to drop the rev n engine sound when i shut other 3 intakes.......

when i put on the original small port intake manifold, it's all good....

can someone identify this situation? what more should i do? where i did wrongly?

helps are appreciated regardless if it works or not, thanks.