Do more expensive spark plugs make a difference?

Do more expensive spark plugs give you better results than ordinary cheap spark plug. How do I know which ones to buy so I get the best performance. Which ones do you recommend?Do more expensive spark plugs make a difference?i own a repair shop,and yes if your talking about the difference in a plug like a Bosch,,or ngk,,yes they do as compared to a champion plug,,actually Bosch platinum plugs are the best you can buy for the money,and they will out last all the others also,,i use them in the shop,,because i don't want my customers to have problems out on the road,,and i have always had them give good service in my vehicles also,,but there is a difference in good and bad,,or cheap,,either way you look at it,,these days,you get what you pay for,,good luck,i hope this help,s.Do more expensive spark plugs make a difference?they will amplify any other mods u do only really effective if your after another tenth of a second in a lap time normal life not worth feck all. and it would want to be the batman superman love child of a spark plug on l.s.d t get u an extra tenthDo more expensive spark plugs make a difference?Yes it does make a difference, just like everything else the better quality the better you pay, Me I like the splitfires better, but thats just a personal opinion.Do more expensive spark plugs make a difference?As a general rule of them, we replace plugs on Customers car's with OEM spec plugs. If they request different plugs, that is not an issue. Bosch Platinum plugs are very good plugs as well, but I am a bit skeptical about the %26quot;100,000 mile tuneup.%26quot; A super expensive Iridium plug wont give you any performance gains in a regular car, but a cheap off brand plug could cost you some.



On another note, for performance engines, I find autolite's to be very good plugs. Denso has a HUGE selection of heat ranges, which is really nice in find tuning a modded engine. One thing I do not like about Denso plugs, however, is that the tips of the spark plugs screw on, so they can vibrate loose and create a miss. I have seen it happen and the first time I saw it it was difficult to find, because it is the last thing you would expect.



JimDo more expensive spark plugs make a difference?Yes thats why they cost more. depends on what kind of car you have. I have had good luck with Autolite platnium ,denso irridium plugs also with Bosch ust depends on vehicle mfg,Do more expensive spark plugs make a difference?Better results.... they last longer, as in Platinums, but they wont give you like 50 horsepower and drop you from 16 to 12 secs in the quarter mile. The only advantage is that you wont have to change them as often..... In my experience of 25 years working on cars Champion is the best IMO..... NGK is the worst...alot of rim firing. But everyone has their own preference.