Egg1456

iTrader: (2)

Time to change the old spark plugs, thinking of going with either a denso iridium or the new e3 spark plugs. Who has any experience using either?

608kZ28

i just went with NGK tr6

firstinlastout86

iTrader: (4)

i got the TR-55 if your n/a there is no reason to go with the tr-6's
tr-55=NA
tr-6=spray

BaddBird

iTrader: (6)

Just to give you a heads up I have seen nothing but problems out of the E3s as in fouling with in a 1k miles. The Denson Iridiums will soon be replacing all of the AC Delco platinum plugs. So far they
seem to be decent plugs.They are pre gapped but do not re gap Iridium plugs the Iridium in the tip will crack and cause misfires or break apart and end up in the cat.

nitrousjunky

NGK TR-55 all the way.

608kZ28

yeah maybe. but at the time i needed new plugs and i had 8 brand new tr-6's laying there.

Egg1456

iTrader: (2)

yea the e3s seemed a little too good to be true

dhutch

iTrader: (1)

FWIW, I'm on my second WS6 6 speed and have run nothing but E3's in them both. 40k on the first car, 10 k on this one. My fuel mileage did increase slightly. I saw an episode on horsepower on spike tv where the E3 was compared to several other brands. It supposedly made 8 hp more due to the design being able to more efficiently burn the fuel mix.

cabotgsxr

iTrader: (2)

ac delco 41-1110 Iridium excellent plugs!!!

Wildside

iTrader: (21)

why run the high $ pulg when they all make around the some power i have run them all motor on my tr6 made the some power on motor as my tr55 but if i run motor i do go head and but tr55 in and i dont see spending the 50 to 60 when i can get ngk for 18

Egg1456

iTrader: (2)

I know that the denso's are proven to make more hp than other standard type plugs because of the u grove and the electrode is smaller burning at a higher temp.

HWI

iTrader: (2)

I run TR-55s and have no complaints.

teke184

iTrader: (5)

you won't see any difference with a fancy plug.

$2 ngk's here and they've worked great.



as for HPtv getting power from the plugs....were the plugs they pulled out brand new? comparing 75K mile plugs to ANY new plug could yield 8hp.

if they put brand new plugs gapped properly in...dynoed...swapped to the E3s...dynoed...and saw 8hp that would be different.

but they don't do that...otherwise the sponsors would be mad

T-56SLPSS

Go with the company thatspent the most money designing the plugs. Acdelco is the only way to go with an ls1. I blew my motor due to spark plug experimentation. Stick with stock

T-56SLPSS

I blew my motor experimenting with bosch plugs. Use the company that spent the most money disigning a plug for that motor "aka" stock plugs. Ac delco for gm, motorcraft for ford. They are going to be your best bet. Just my .02