91 LS Tune up?

Its time to get a tune-up on my car. I was thinking about replacing the spark plug wires with Ngk wires and the plugs with Ngk iridium ones. But my mechanic says that i shouldn't just get the iridium plugs that the stock platinum ones are good enough and that i wouldn't see that much of a performance gain and to save money.  What do you guys think?

im running NGK Iridium IX on mine...with NGK plug wires.

id stick with stock spec imo, im more interested in them lasting forever like my stock ones (190k) than a small performance increase

It sucks that there isn't much performance upgrades for the 1st gen LS, so you gotta squeeze out as much performance as possible.

[QUOTE=Brandicus;271805]id stick with stock spec imo, im more interested in them lasting forever like my stock ones (190k) than a small performance increase[/QUOTE]
+1.

Come on i don't think it could really be that bad.

I agree with your mechanic, I have seen performance plugs where they have such low resistance, i have seen spark jump from a wire that was suspose to spark and give partial feed to a different run = rough motor.

But this is NGK plugs and wires im talking about, how could they suck that bad?

they dont suck. hes just saying that there is a CHANCE it could. i <3 mine.