So i got bored today and decided to put my brain and gadgets to work.
I looked at the car and said,"ok time to change the spark plugs"
Since i work on my own car i stock pile parts because its a ford
i have 4 sets of plugs ngk iridiums,denso iridiums, Brisk 2 point iridiums, and oem autolites copper.
i ran the SCT Xcal (my piggyack tuner) on HP mode and came near the dyno #'s i had last time i tuned it (off by 3 hp)
after changing my plugs to the ngk's i lost another 6HP ....interesting so i changed to the DENSO ones next this time i only lost 1 HP went back to the BRisk 2 points and lost 3hp....
At this point i thought well its just depends on who makes the plugs(quality??) but then i had the idea to stick the factory copper ones back in.....
I GAINED 7HP!!!!!!!
now im lost...ran back inside to look through some porn(it clears my mind) and look through my old college books..circa 2007.lol
this is what i learned or rediscovered so my parents dont feel bad for putting me through school
platinum or iridium- wont give the strongest spark. Platinum family metals (iridium has the same properties) are good for not fouling over 100k miles and were originally developed for airplane engines. The conductivity of plat and irid is around 15% as compared to iron which is around 40%, copper is 98%.
my cheap plugs worked better and provided a stronger PUNCH the only issue is having to changed them every 5k-7k miles but @ only 1.29 a plug i'll be doing this instead of my $63 BRisk plugs.
Do research before you drop money on what you don't need
I also figure if i get a hotter plug for winter ie...autolites 105's i'll gain an extra 2-3 hp all from cheap plugs...
hope this helps...to save some money