E 3 Spark Plug Performance
Thread Starter
Heel & Toe
Joined: Jan 2018
Posts: 17
Likes: 0
From: C.G. Az.
E 3 Spark Plug Performance
Have a 2002 C5 Coupe that is due for Spark Plugs .Have always wanted to try the E3 Plugs , just wondering if any one has any feedback on these Plugs as far as performance and reliability . Car has O.B.X. Longtubes and Varam Cold Intake .
Last edited by 1luckyVette; Nov 12, 2018 at 10:48 PM.
Acct Suspended APR 2026 by request
Joined: Dec 2010
Posts: 10,367
Likes: 1,272
2020 Corvette of the Year Finalist (performance mods)
C5 of Year Winner (performance mods) 2019
probably a waste of money, especially if the car is stock or lightly modded... my $2 a piece ngk's do just fine
Le Mans Master
Joined: Aug 2005
Posts: 5,375
Likes: 328
From: CA.
St. Jude Donor '13-'14-'15
There is NO HP advantage by gloing to these new crazy designed plugs--
Typically when someone changes to these miracle plugs and sees an increase in performanceit simply means that their old plugs were worn out or old so any NEW plug would have shown better performance--even a new stock set
The only thing that needs to be considered with plug choice is the "heat range" Even an engine with hdrs and a cam can use the stock plug heat range (NGK TR55) the only time you would need a COLDER plug such a a TR6 if you go to a boosted engine OR a high compression engine beyond 10-1 CR ratio
Typically when someone changes to these miracle plugs and sees an increase in performanceit simply means that their old plugs were worn out or old so any NEW plug would have shown better performance--even a new stock set
The only thing that needs to be considered with plug choice is the "heat range" Even an engine with hdrs and a cam can use the stock plug heat range (NGK TR55) the only time you would need a COLDER plug such a a TR6 if you go to a boosted engine OR a high compression engine beyond 10-1 CR ratio
