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1jz mpg


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#1 Cassez

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Posted 30 December 2016 - 02:44 AM

So I want to know how much miles per gallon a 1jz (vvti and not vvti) Making 440 horsepower with 550cc injectors

Please help !

Edited by Cassez, 30 December 2016 - 02:45 AM.


#2 Greeko

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Posted 30 December 2016 - 09:04 AM

LOL, ...HORRIBLE!.. You don't put in a JZ for fuel economy. I make around 400 hp with 440cc injectors and burn 18-20 MPG



#3 Cassez

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Posted 30 December 2016 - 01:57 PM

How much mpg do you think one with 550cc injectors would get?

#4 Greeko

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Posted 30 December 2016 - 03:10 PM

Similar



#5 seattlejester

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Posted 30 December 2016 - 05:57 PM

Depends on your gearing. If you got like a 3.1 rear end and used an R154 you would most likely be able to run highway speeds without being in boost, I think with a 3.7 rear end I sit around 2300rpm.

 

At that point you would be getting comparable mileage to an NA supra or IS300/sc300, but better since there is quite a bit less weight, but still probably low 20mpg figures. 

 

With PWM control, injector size really isn't a factor as it used to be where 1000cc injectors would get absolute dog turd mileage. 

 

Once you get into boost though you could empty your tank pretty quick. When I was shopping fuel pumps I was told to figure fuel usage at about 1 gallon/10hp. At 440hp you would need 44gph. That would drain a 16 gallon fuel cell in about 20 minutes, granted I don't know anywhere in the world you can be hard on the throttle for 20 minutes at a time.






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