Tomina

Hy guys, I'm from Croatia.

I'm driveing Prelude BB9, 1998. year, 2.0, 98kW (F20A4).

Ok, my plan is little tune this engine.
At home I have a full H22A2 engine, with broken cranskhaft (no oil in engine), but I don't want to repair this engine. Here in Croatia to repair that engine is a very expensive problem. Used parts are very expensive.

At home I have and H22A7 block
That engine was also a broken, oil pump was broken. Only block I have.

But my plan is to sold that H22 parts, and port and polish F20 intake or buy H23 intake. (very hard to find H23 intake).
Buy 4-2-1 exhaust manifold, little work with gearbox, better clutch, and remap this engine (full remap or just H23 ECU). Turbo is not in planing.

Which diameter of exhaust is best to this 2.0 engine? After tune, It will have cca 150-160 hp.

I will rewrite the 4-2-1 exhaust manifold from H22A2 or A7 engine to F20 engine. Plan is 2 full flowed mufflers, and 1 half flowed mufflers.