[s-cars] RE: Bosch Platimum+4 Plugs

[HoosierMP at aol.com]

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In a message dated 11/12/02 6:30:44 PM US Eastern Standard Time,
t44tq at mindspring.com writes:


>
> BTW,
> Some of the crazier A4 guys running APR StageIII/III+
> or have 2L conversions and the like have reported bad
> results w/ the Denso Iridiums and (!) they went to the
> Bosch FD5POR with greatly improved results.
>
> I'm not sure if fellow lister Rich Sierra can chime in,
> I thought he had some experience with them.
>
>

Although I have no direct experience with them, in 1.8T land, the guys have
reported GOOD results with the Denso Iridium plugs. The Denso's used are one
heat range colder then stock.

I run NGK platinums in the A4 that are also one heat range colder with good
results as well. The 1.8T has a 9.5 to 1 compression ratio.

My RS2 S4 has Bosch platinums (installed by the PO) and the car runs well
IMO. I am not aware if they are colder than the OE plugs. I have not tried
the Bosch FD5P0R.

My experience has been that turbo cars running a lot of boost benefit from a
colder plug in order to resist pre-ignition.

Richard