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· Whoa...
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one tank of 87 once in a while is no big deal , the knock sensor will retard timing to compensate, and you will get neither the performance nor gas milage you usually do... keep it at 91 or better if you can, but dont be scared if it is a tankful of lower ctane gas... just dont run 87 exclusively... you wont get your $$$ worth in terms of performance, and if your knock sensor evewr goes, you could have problems...
 

· Whoa...
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NickZac said:
Is your argument saying that you will get the same power on 87 as 91 or that 91+ will make more power. A 350Z will NOT make the same power on 87 as it will on 91, the ECM will retard the timing.
yea, just cxause you lose power by going down on octane rating(because of retardation by the knock sensor) isnt the same as saying you will gain power by going up...
 

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NickZac said:
This is true...I guess I worded that awkwardly. The car will not be making its full potential because of the knock sensor (I assume the Z has one) will retard timing. Dyno graphs will show this on Spec Vs which use 87 while dynoing. Their graphs look somewhat like a richtor scale.
not to mention what would happen if the knock sensor crapped put... major engine knock and leading to fuct pistons...
 

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Spongerider said:
Ok show me the fact, I'm waiting? But if your word is fact then you really need to go to the 300zxclub because that kind of baby talk belongs there.
ok idiot, run 87 in your car, but dont tell other peole to, because you are too ignorant to realize IF THE KNOCK SENSOR FAILS A 350Z WILL BECOME SERIOUSLY FUCKED UP WITH 87 OCTANE GAS! and like i said, you lose power with lower octane BECAUSE of the sensor, is that what you are disputing? or are you disputing my statement you WILL NOT gain power from higher octane?

its a high performance car, use high performance gas... god i went through with this shit in the qr section with spec V's, some dumb ass is gonna have 100 people fuck up thier cars to save 30 cents at the pump...

in the end, if your car says 91, run 91, 87 will hurt it, 100 wont help it, use what is recomended...
 
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