LS1TECH - Camaro and Firebird Forum Discussion

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- - ngk TR-6's and fuel economy (https://ls1tech.com/forums/nitrous-oxide/698711-ngk-tr-6s-fuel-economy.html)

2002z28

Apr 18, 2007 11:54 AM

ngk TR-6's and fuel economy

I checked my fuel economy last weekend. I was driving about 77mph with the cruise control on. Six Speed with stock 3:42 gears.
I managed a terrible 23.5mpg.
Is it the cold plugs? They are gapped @ .035"
thanks,

Todd157k

Apr 18, 2007 12:51 PM

I didn't have any mpg difference with them. Not more, not less.

Danger731

Apr 18, 2007 01:24 PM

Wonder If It Drops Power N/a

Z284U2TRY

Apr 18, 2007 02:10 PM

26mpg highway m6 342's

2002z28

Apr 18, 2007 03:35 PM

i was getting around 28mpg a couple of years ago. this is the first time i have checked it with the colder plugs.

LS1RedZ

Apr 19, 2007 12:32 AM

Quote:

Originally Posted by Danger731

Wonder If It Drops Power N/a

I have been told that with colder plugs there will be a drop of about 10hp.

oange ss

Apr 19, 2007 09:18 AM

Quote:

Originally Posted by LS1RedZ

I have been told that with colder plugs there will be a drop of about 10hp.

might be a small loss on a bone stock motor, but it wont be 10 hp

Screamin_Z

Apr 19, 2007 12:18 PM

not much if any hp loss but some motors will lose MPG with colder plugs, it's not as efficient as a hotter plug

Hennytime

Apr 19, 2007 01:45 PM

maybe 3-5 flywheels horsepower

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