YlwGTO4m3

Well my TR6 (gap .040) have only been on for a few miles and been through one ten pound bottle spraying a 75 dry shot. Now the car is running very rough and i'm thinking its the plugs. The car has not run strong since i put them in. I have tr55s coming in today. So i guess i have 2 questions. Anyone have problems with the TR6 and running rough, and second, if it's not the plugs, some guesses on why the car is running rough and throwing the low cat efficiency code. Thanks guys, you're the best.

Hocky

iTrader: (5)

My TR6s die out quickly on me.

daryl2cb@yahoo.com

iTrader: (2)

check the gap, I change my plugs like oil. Do not spray on those tr55's

brad8266

iTrader: (23)

my tr6's never foul, gapped at .038

227Hawk

iTrader: (1)

You're 'gapped' pretty tight for a 75 shot. ( Tighter then required) How many miles on the short block? Tighter plug gaps require a pretty good 'ring-seal'.
If you're rings are tired or high mileage the tight gap will foul.
Hawk

oange ss

iTrader: (50)

or if you lug the motor around town alot, i see no reason to run tr6 for a 75 shot on a basically stock car

YlwGTO4m3

Hey guys thank for the replies. I went ahead and switched them out for copper tr55s since I had already ordered them. They are gapped at .040 and the car is running like it should. I'm taking the car to the track this saturday weather permitting. The car is back to its normal power and the gas mileage is also back to normal thank God it was killing me. My good friend has HP tuners so we will log the nitrous to make sure everything there seems ok and clear the cat code and see if it comes back. I need to get a bung put in the exhaust. I don't think I will be running TR6 anytime soon. they only lasted one 10lb bottle and maybe 2000 miles of daily driving so F that. One of the plugs looked like it had oil on it? Any guesses as to how that happened? Thanks again.

Oh ya i'm at 24k miles.

BriancWS6

iTrader: (18)

Well I have ran TR6s gapped@.038 in both of my LS1 vehicles, previous and current with no problems at all with idle, drivibility, mileage, or power output..see sig

And you said that you just installed the fresh TR55s gapped@.040? That is too tight for your needs. Open them on up a bit. When I was running them I liked them at .055.....but I didn't spray with them.

227Hawk

iTrader: (1)

Those 55s aren't going to like being sprayed ( to hot) The TR6s gapped correctly would be a better choice.
Hawk

YlwGTO4m3

I agree with you but i think they will have to do for a bottle or 2 and I will just have to tune for safety. I will get some more tr6's but my first experience with them was completely negative. I think I will order some tr55 with the tr6 just in case i run into the same problem. any ideas on the oil on the old tr6?

Ryan_Z28

TR55's are a bad idea I have TR6s with a wet 100 shot gaped at .033 works great together

TA455

I am running a 100 dry shot on my LS2. I have TR6s gapped at .036". My car is a daily driver with over 30 passes at the track on the same plugs...no problems. BTW, some of those passes were with 50 and 75 shots before I moved up to the 100 shot.

I doubt that your problem lies in the TR6 plugs...too many folks are using them without problems.

BadAssFast

iTrader: (2)

On 150 wet: TR6 plugs gapped at .035 for 10-12,000 miles always look pretty clean.

Red Heartbeat

iTrader: (9)

The oil on the plug wouldn't happen to be on cylinder 7 would it? That seems to be a common problem on most LSx engines.