2faS4u2pass

his 0-60 and 1/4 mile runs will be .008's slower than normal........

Good job on the <i>insta-pics</i> (install pics), I keep missing all these fun stuff you guys are doing lately

S4er

Please let me know where and what to get, TIA

The R

Hmm.........Something to consider.

Ferris TMK

<ul><li><a href="http://www.machvw.com">MachVW</a></li></ul>

DrSmile

Speaking from experience, although the S4 may be an exception... If you run 1+ bar I would definitely go with plain ol plugs.

MingS4

New Iridium vs. old oem. Who knows, new oem may have given same results? IMHO.

Ferris TMK

I actually thought the same thing about Platinum and was surprised to see them installed.

Copper's melting point is 1981 degrees F.
Iridium's melting point is 4449 degrees F.
Platinum's melting point is 3224 degrees F.

Copper's Tensile strength is 20,000 PSI.
Iridium's Tensile Strength is 160,000 PSI.
Platinum's Tensile Strength is 20,000 PSI.

I think the issue people were having lie with the Bosch Platinum's and I think that's why Audi went NGK..

Ferris TMK

I didn't claim it to be better, like I said we had no hard data. Science proves it takes less power produce a good enough arc w/ iridium so you could theoretically run larger gaps. However with out the data on the coil pack it's all theory. Do what you want I'm just presenting another option

DrSmile

I have run NGK platinums in my DSM and without fail the car will start to miss past 18psi (1.2 bar). And yes I realize stock is platinum but I think that's more of a service issue for Audi than anything else seeing how much of a pita it is to get at the plugs.

///Mike@Boston Audi

optimum for both on our cars? would there be any benefit to changing the gap or the heat range for stock vehicles? What about chipped cars?