COLD AIR INTAKE question (pics)

[QG]

^^ i now talk to a tuner who told me that i need a fuel pressure regulator b4 i detonate my engine... was reading about it on the net and some people use the regulator when they do intakes and exhaust.... ny one has intakes and exhaust and stock fuel pump? how is it working for u?


Got some info.. is dis it?
If the tip of the Spark plug is light tan colour - good burn
If the tip of the Spark plug is gray or looks like ash is on it - lean burn
If the tip of the Spark plug is black - rich burn

oh and... which is d better plug for an almera in terms of better gas usage and more accel. from your experience. already checked it out on d net n wanna know someone experience with them.. thanks
NGK Platinum
NGK Irridium
Denso Irridium

Yes i have stock fuel pump.

[QG]

driving with intake and headers for almost two years now and meh engine wuking gud still.