Now i used to have a missfire problem, when i did have the problem i tryed many many plugs with gaps from .35 to .25! I like the ngk tr55 best for somereason. Recently i droped and changed my clutch and notice a broke ground wire. It was brown ground wires with a circle head so a bolt would hold it tight. The circle poped off and the wires was just hanging there. Now that its cold i am able to run up to 23 - 25 psi without missfire! I dont no if its because of the cold or that wire. Now my question is this. I just ordered bkr8eix ngk ird. What is the difference between the tr55 line of plugs vs the ngs bkr8 line of plugs?

Lol, If you have an ecotec you need an LTRxxxx plug.
A tr5 is for the ld9.
bkr is (i believe) a cobalt ss plug ( not the right plug)

Get plugs for a SRT4 and call it a day. Same size but they start out 1 step colder already

$1.15 for a copper plug FTMFW!



I used to race cars, now I race myself.
5K PB: 24:50
10K PB: 54:26

^^ I had the SRT4 plugs in my car. I pulled them to take a look at them and they had a heat range on 5 on them. Kinda scary with boost. What was the number on your plugs if you remember? I ordered the exact numberI got off of here a few years ago

ecotecpower wrote:^^ I had the SRT4 plugs in my car. I pulled them to take a look at them and they had a heat range on 5 on them. Kinda scary with boost. What was the number on your plugs if you remember? I ordered the exact numberI got off of here a few years ago

I ran the stock Champion copper plugs for over a year and never had an issue. They are right in the middle of the heat ranges but they are copper and 1 step colder than the factory plugs to start with. Any upgrade from those is really a double upgrade.



I used to race cars, now I race myself.
5K PB: 24:50
10K PB: 54:26