ZONES89RS

iTrader: (25)

Is there much loss using a TR6 or BR7 N/A when you dont want to run the nitrous? Just trying to get a idea if i would expect to see less at the track on motor, if i should run a TR5/6 in the 5.3, then swap to a BR7 when the gas is on or just buy a BR7 and call it good?

JUISSD

iTrader: (3)

You're going to lose a little bit running a colder plug. If you don't mind swapping plugs then run a hotter plug and just switch when you're going to spray. I hit my power goal n/a for now with the br7ef's so I just run them all the time.

ZONES89RS

iTrader: (25)

Well, i guess i will test them in my 6.0, see if it helps or hurts, i installed a super victor and i was hoping to knock off a tenth to get a 7.0 all motor, would suck if a set of plugs held me back by leaving me at 7.1s.

ATVracr

iTrader: (5)

TR6 to BR7 wont cost you any power.

This isnt 1980 .... The LS1 chambers are very efficent, what do you think a little colder tip plug will cause the thing to not fire off or something?

JMO.

jmm98LS1

iTrader: (28)

^^^Agreed. I tested this on my car. I made two back to back n/a runs, the first with TR6 plugs and the second with ngk -8's and the runs were within .05 ET and .2 mph of each other.

kidcamaro98

iTrader: (8)

you wont lose any power at all. I DD my car when its nice out on br7ef's gapped at .032 and it never ran any different from the tr-55's

StormesRacing001

iTrader: (5)

I was also gonna ask this question. Thanks Guys!

ZONES89RS

iTrader: (25)

I had TR5s that were gapped to .050, i dont remember setting them that much, but now they are BR7s at .035.

87silverbullet

iTrader: (11)

That was a track comparison which is good for the OP to see and I have a dyno comparison in that i ran the tr6 on the dyno and then put in the br7ef's and only lost 4hp on the dyno but that 4hp could be anything.

Oldass

I lost 8 hp on the dyno going from a TR6 to a BR7EFS

ZONES89RS

iTrader: (25)

Yea, i have seen back to back dynos lose that much power with no change other than operating temperature, ect.

kidcamaro98

iTrader: (8)

bingo.

the power lose could have been simply from motor temp, outside temps etc.

CTSprojectR

good to know )

Carter01

iTrader: (11)

FWIW my best motor passes ever was on a day I was running nitrous and some guys wanted to know what my car ran on motor so I made a few passes. I was running br8efs gapped at .33 So I would have to agree that the colder plug will not hurt and if you really want my honest opinion I think tr55s are too hot for a bolt-on car and #7s are probably the best plug to drive around on for a DD plug setup.

Squirts11

iTrader: (14)

You don't constantly foul plugs when DD'ing the BR7EF's? I'm considering running them 24/7 since I'm about to start spraying.

If they don't constantly foul during city driving, that would be a much more convenient alternative than running the TR55's for daily use, then needing to swap to BR7EF's if I planned on spraying that night.

kidcamaro98

iTrader: (8)

I DD my car on the br7ef's and I have never fouled them. I change them about twice a year.

Carter01

iTrader: (11)

If you were tuned on 55s then switch to 7s you might see an overly rich condition. Your tuner should be able to clean it up fairly easy.

ASkipper

iTrader: (1)

I have gotten my best times NA while running the BR7 plugs.

karpetcm

iTrader: (2)

Ive been running colder plugs since my install on the LT's which has been a few months and i would seriously doubt you would lose any power at all. Just run the colder plugs if your using nitrous and leave them in.

ShiznityZ28

iTrader: (11)

FYI. on the colder plugs you will more than likely get a little more timming in it. We have found little to o loss in colder pluss. the thing that scares people is if you idle tune is mediocre to start the cold plug on start up will make it worse. if your fix your **** tune it will idle and run good and run about the same.