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Only have access to 91oct. NOS octane booster question?

jrsimon27

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Hey friends the owners manual says not to use octane boosters containing MMT. The NOS octane booster has this. What happens to the car using this? Why would ford metion it on the manual?
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ScottsGT

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Mine runs fine on 87. Are you stock?

To answer your question, or to try to, maybe it has an effect on the O2 sensors or the cats?
 

2015 Silver GT

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Octane boosters are best left to the guys running boost. If your car is stock you shouldn't be using the stuff. It leaves a yellow/orange residue all over your valves and plugs.
 

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Civic2stang

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Octane boosters are snake oil. If you want an additive that actually boosts octane try torco.
Snake Oil makes up Octane Boosters.

Cobras are snakes.

Shelby uses a cobra as a logo.

The fastest factory mustang is the Shelby.

Therefore:

Octane boosters will make a GT as fast as a Shelby.
 

Dolsvt00

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Snake Oil makes up Octane Boosters.

Cobras are snakes.

Shelby uses a cobra as a logo.

The fastest factory mustang is the Shelby.

Therefore:

Octane boosters will make a GT as fast as a Shelby.
Forgot I was on a mustang forum, exhaust is the new rice fart can, throttle body spacers add horsepressures, spark plugs pick up 20hp and air intakes are worth discussion if they add .001 hp over the other or come with some cheap piece of clear plastic to cover the filter and intake manifolds that loose 40 ft lbs of tq where you need it but gain 20 hp where you dont need it and cost thousands are considered quality mods.
 

Civic2stang

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Forgot I was on a mustang forum, exhaust is the new rice fart can, throttle body spacers add horsepressures, spark plugs pick up 20hp and air intakes are worth discussion if they add .001 hp over the other or come with some cheap piece of clear plastic to cover the filter and intake manifolds that loose 40 ft lbs of tq where you need it but gain 20 hp where you dont need it and cost thousands are considered quality mods.
I didn't think anyone would take that seriously.

I know civic to mustang is my user name, but it's more "here's my soulless steel cage that efficiently gets me from point A to point B, than "civic, vroom-vroom." In fact the only non stock things on my civic are the floormats (weather tech), cabin air filter (Fram is cheaper than OEM), and engine air filter (Fram is cheaper than stock). Oh and one of my batteries died so I popped in whatever Sears sells (die hard maybe?).
 

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craigsix

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Forgot I was on a mustang forum, exhaust is the new rice fart can, throttle body spacers add horsepressures, spark plugs pick up 20hp and air intakes are worth discussion if they add .001 hp over the other or come with some cheap piece of clear plastic to cover the filter and intake manifolds that loose 40 ft lbs of tq where you need it but gain 20 hp where you dont need it and cost thousands are considered quality mods.
learned my lesson on the intake manifold!
 

RogerS550

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VP octanium from Auto Zone actually works, too, without MMT.
 

Roki187

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Johnb-5.0

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Johnb-5.0

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