The bosch plugs can be found at autozone or O'Reilly's for about 18 bucks each. Cant recall the exact spec, but vw uses the Bosch plugs stock, so its a direct oe swap.
Replace the spark plug with a Bosch. See if it will start and run.
I've ran these for a few years stage 2 e85, with absolutely no issue at all. The last year and a half I've been running a bigger turbo, powermax 2260 and have had zero issues
Been running them for the last year on EQT stg 1 91 and e30 with no issue.
I have a shelf of new parts for a bunch of my VW’s. All the cap and rotor parts I can find are the same for either car. They’re brand new. The plugs are brand new as well. Gapped by the Bentley. The plugs were “black” from trying to fire but not.
I have used NKG FOR THE PAST 6 years on the car , no issues at all. Recently replaced them with Bosch OEM spark plugs , it’s same shit , no difference.
I was running stage 2 apr with rs7 brisk plugs, had misfires on cold start. Did carbon cleaning myself, misfire kept happening. Spark plugs kept getting lose even after torquing. Switched to Oem spark plugs and no more misfires.
Champion is OEM and what we suggest at work, but NGK has never failed us with any application. Bosch is generally terrible and we only use them if it’s a very specific application.
Although I prefer Bosch sensors over other brands in certain parts of my Mk 5 2.5, I will not buy Bosch spark plugs. Many professional mechanics over the last 3 decades have told me horror stories about them.
I wouldn't do the Brisk plugs if you're not tracking it hard. They susceptible to fouling up unless you drive it like you stole it every time.
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