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Bought and installed gt sparkplugs on my gt-s on accident #450545 Mar 31, 3:30am Mar 31, 3:30am
Joined: Mar 2015
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TallAssAsian OP
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Bought and installed gt sparkplugs on my gt-s on accident
Does it make a big difference? Should I be worried?

Re: Bought and installed gt sparkplugs on my gt-s on accident [Re: TallAssAsian] #450558 Apr 2, 6:20pm Apr 2, 6:20pm
Joined: May 2002
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CaffeineKid
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2008 Scion tC

Joined: May 2002
Posts: 470
California
The recommended GTS spark plugs are one heat-range colder than the recommended GT spark plugs.

Colder heat-range plugs help stop pre-ignition, and are generally used in highly tuned normally aspirated and forced induction engines. For a example, the GT plug heat-range is 16, whereas the GTS heat-range is 20, 1 heat-range colder.

For a standard internals road car there is probably not much advantage to go for a colder plug, unless you drive you car in the 7-8000RPM range for extended periods.

Though, for the Celica GTS, it is recommend to use a these colder plugs because of its VVTL-I tech. A downside of cold plugs is that they foul easier than hot plugs.

Since you've put GT recommended plugs in to your GTS, the plugs you are using are 1 heat range warmer. Its recommended to keep your Celica out of high-rev ranges for extended periods -- especially on your GTS.

Re: Bought and installed gt sparkplugs on my gt-s on accident [Re: TallAssAsian] #450560 Apr 3, 11:40pm Apr 3, 11:40pm
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Thanks so much man you really took a lot off my mind. Another thing though, do you think that that one heat range difference will make a noticeable mpg gain/loss?

Re: Bought and installed gt sparkplugs on my gt-s on accident [Re: TallAssAsian] #450581 Apr 17, 4:30pm Apr 17, 4:30pm
Joined: Dec 2013
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Texas
2000 Silver Toyota Celica GT
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2000 Toyota Celica GT
Tuantrang
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2000 Toyota Celica GT

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Texas
I'm not good with the spark plug topic, But use what it recommended, I suggest you just replace it again with the right spark plug for your model.

Using wrong spark plug or dirty can cause high fuel consemption and lack of power.

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