Plugs - W5 or W4

Shailan · November 26, 2009, 10:26:59 AM

Anyone have experience of running a W4 plug instead of the W5 plug?

As most of the G's are modified is it better to run a colder plug?

I need a new set of plugs and would like to try the W4 unless someone tells me otherwise.

I read the post about the rotor arms with W4 - but take it was due to the Resistor not the heat range of the plug.

Cheers

polo classic · November 26, 2009, 12:28:55 PM

Whats your spec again Shailan?

Doubt it really is needed unless you run higher CR and/or very high boost (Eaton/KKK). That said I have W4CS in at the moment

SteG40 · November 26, 2009, 12:41:49 PM

I use W4's too but it's on a turbo'd setup.

Yoof · November 26, 2009, 02:45:42 PM

Quote from: polo classic on November 26, 2009, 12:28:55 PM
Whats your spec again Shailan?

Doubt it really is needed unless you run higher CR and/or very high boost (Eaton/KKK). That said I have W4CS in at the moment

Take them out- I've melted a set of these (without nitrous)

lance · November 26, 2009, 04:12:07 PM

what you running now then yoof?

The Duck · November 30, 2009, 10:48:28 PM

Running W4's on an fully sorted eaton setup. 9.3:1 compression.
Runs poor when cold but I suspect that is map related. Soon find out when I remap.
Drives nice when warm and pulls plenty hard. Plugs are in good nick.
Again I am running big power and did not need the W4's with 180BHP and the G-lader.

jez1272gt · December 01, 2009, 10:58:02 AM

I've got a set of W4's waiting patiently to go in to my final build!! So they are no good for a big turbo spec then yoofy?

Yoof · December 01, 2009, 03:01:22 PM

I ran nitrous too, that's what killed the Bosch plugs to be honest. Rest of you who aren't running gas should be fine with them.

Interestingly look how many OEMs now use Bosch electronics throughout the car, and NGK plugs

jez1272gt · December 01, 2009, 04:05:56 PM

I have no plans to get near nitros so i should be ok on the w4's then with any luck..

polo classic · December 02, 2009, 02:30:03 PM

Quote from: Yoof on November 26, 2009, 02:45:42 PM
Quote from: polo classic on November 26, 2009, 12:28:55 PM
Whats your spec again Shailan?

Doubt it really is needed unless you run higher CR and/or very high boost (Eaton/KKK). That said I have W4CS in at the moment

Take them out- I've melted a set of these (without nitrous)

Well I have been "running" these since 2003 without any problems

Yoof · December 02, 2009, 02:58:03 PM

How many miles have you covered in 6 years though Frode

We all know you love Gucci suits more than driving Polos