wise decision gents, my brother's EK4 SiR 4dr sedan with B16A2 comes stock with a "6" plug & when i inspected my EK9's plug it had a "7" so off the NGK plugs & in the Denso IK22 plugs.
this is so untrue unless you're experiencing major detonation. we have been using Denso Iridium plugs for years now & we haven't encountered such a problem.
get rid of the 18" wheels, it makes your final gear ratio taller making the engine work harder to roll it, stick to the 15" wheels. replace your plugs if they are still the original ones, what intake you have on?
what you may be referring to is the RATE OF IGNITION.
btw if our engines are running with exploding mixtures we would have melted or holed pistons in the first few minutes of operation, detonation is the sudden explosion of combustible mixture inside the combustion chamber. for an engine to...
even with iridium plugs they need to be re-gapped foryour intended purpose, i use IK27 plugs on my race tuned scooters & the manufacturer who makes my digital ignition says to gap the plug to 0.45mm.
btw gapping the plugs will not change the ignition timing of the engine.
yeah it's bad but not as bad as that orange EK9, a Civic coupe is very common in your place but an EK9? the only place you could buy that is Japan & to ruin such a perfect car (rare to boot) is sacrilege & an insult to us EK9 enthusiasts.
EK4's were never released in the US (EK is JDM), only the Civic EM1 coupe 99-00 came with the B16A2 engine.
btw we do have a PhDM EK4 SiR 4dr sedan with a B16A2 engine.
i haven't got a dyno but the principle of removing the padding is to increase the volume of the airbox & to let the resonant frequency inside the airbox to go undamped which can help increase power. this is why motorcycle manufacturers spend millions in R&D to develop airboxes in their high...
B16B 185hp (crank), B18C 205hp (crank), add those aftermarket exhaust, intake, ECU & close ratio gears & you'll be exceeding your goal easily. even with B16B you'll have a hard time getting real 200hp at the wheels let alone 210.
get the '98 spec B18C if you can.