Hai there..pls help me with this question, i've bought a 2nd hand R34, and yes the mileage is more than 120,000km, do you suggest for me to do port polish to the engine? and one more thing, i've bought a 2nd HKS...
hope someone can help me out here...i had a blow off valve(BOV) installed recently, but then i started to loose power...not a lot but noticable!..
i did some troubleshooting ie. disconnected the BOV and...