The plug they sent me (Bosch #4417 FGR7DQP Platinum +4) runs absolutely fine on my engine, actually it feels better then before, but I just worried if it is indeed not the correct plug, will it do harm to my engine?
The Bosch side fires are an AAN plug that has a removable top. I will probably use those, they worked great with my B5 S4.
I've been using bosch FD5POR aka rs2 plugs. I'm quite pleased with them.
Bosch F5DP0R on a T3/T4 50 trim at 25psi daily. Love it.
I've been running BOSH+ and it feels great!!
Bosch FR8DC+ perform well and you won't have to worry about seized plugs. You might have to change them sooner.
I didn't know any better and used ****ty autolite spark plugs, and everything was fine and the misfires went away... A few days ago I noticed on quick acceleration and around 4-5k RPM's, the engine loses power, accelerates slower than...well, slower than a 2.0 normally is.
The autolite is a cheap plug, not what is recommended to be used.
If you use anything but OEM plugs in a stock white block, well just don't do that. Also Bosch Platinum, great for having to pull your head and find out what the center of the plug did to your engine
For the OEM Bosch plugs, I would check them every 10k-15k miles at a minimum, based on what my stock plugs looked like @ 19k miles (sh!t).
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