ckmeee

the high compression ratio, the more power u get. Since 350z has high compression ratio, i think, it needs octane 91? Is this why 350z needs premium gas?
What can you do to 350z so that the car can take both low octane and high ocatane without knocking the sensor?

thx

davidv

iTrader: (2)

Yes. Compression ratio is a major factor. The number of other factors is extensive: http://www.faqs.org/faqs/autos/gasol...section-1.html

ckmeee

So lowering compression ratio will be ok for the engine to take octane lower than 91?
NOthing else should be changed?

Lee R

iTrader: (10)

Why would you want to lower efficiency?

ckmeee

so that i dun have to put premium gas ALL THE TIME.
WHen gas price spikes up, it gets really nasty lol

eltness350

iTrader: (58)

wow.....dont buy the car if u cant afford the gas retard
end thread/

1GR8350Z

iTrader: (1)

Do you think that there is just some **** that you turn to lower compression?

Do some searching and find out how much lower compression pistons cost alone.. That doesn't even include the labor, which if I was a betting man my money would be on that you will have to get someone to do it for you.

Wow, if the Z is taking so much of your paycheck that you are worried about the difference that premium cost, then do yourself and the Z a favor and sell it. You should have never bought a sports car.

NISMO_558

iTrader: (1)

Then buy a damn prius.

This has got to be one of the stupidest questions I have ever seen.

RAYZ33

iTrader: (3)

I think i read somewhere that the ECU can de-tune itself once you start filling low octane gas on a regular basis. But as said above, it just ruins the point of having a sports car and i hope you don't start a "why does my car feel sluggish" thread when that happens.

ckmeee

well. subaru WRX or STI doesn't have to be filled up with premium gas ALL THE TIME although it's recommended. the engine doesn't just mass up b/c of octane87. And they have turbos and pretty fast.
I don't see Y 350z need premium gas only.

0jiggy0

iTrader: (13)

wow your a ****ing tard. You could probly tune the car and retard the timing and probly be fine. Why didn't u buy a sentra?

Lee R

iTrader: (10)

Wow...that is really stupid. C'mon now, you cannot be serious.


Lock this thread to prevent future retardedness.

ckmeee

can you tell me why 350z stock needs premium gas all the time although it's not any faster than STi?
i just wanna know cause i dun wanna be ****ing tard anymore lol

1GR8350Z

iTrader: (1)

Thats why most people educate themselves and don't ask stupid questions expecting to be spoonfed the answers.

RMichael

spoon and fed are two words

1GR8350Z

iTrader: (1)

Spoon fed. Thank you

ckmeee

i don't think my question is something that everyone knows. All i could find on internet was b/c of compreesion ratio. And also i saw in an article that compression ratio could be lowered by doing something to the head gasket or w/e

1GR8350Z

iTrader: (1)

Yes, a thicker head gasket will lower compression. Again, weigh the cost of labor as it is a pain in the a$$ to do.

halfass872

iTrader: (35)

Wow, just wow!!!

0jiggy0

iTrader: (13)

IP check mods?