2jz mpg?

[alanjoseph]

beside the turbo kit.. whats the difference btw 2jz-ge and 2jz-gtte?

whats the mpg of a stock 2jz-ge and a 2jz-gtte?, both in good conditions.

as the turbo kicks in like at.. above 4k rpm or something... will it consume same amount of gasoline as an GE, in low revs?

[Jeeves]

1st off, There was no GTTE. Two T's is used by Nissan to signify twin-turbo. Toyota doesn't change the name to differentiate between one turbo and two. So, It was just the 2JZ-GTE.

Now, Based on FuelEconomy.gov, they've got the same mpg ratings.

-> Turbo Mk4
-> N/A Mk4

It all really depends. The turbo doesn't just kick in, they fade in and give smooth power, they don't both hit at the same time. So, really, it probably will use more fuel.

Differences:
- Injectors
- Turbos
- Tune
- Compression Ratio
- Oil Squirters


There's enough different that you can't really just say what they each use, fuel wise.

[alanjoseph]

what engine do you have, and how many mpg does it give? just curiosity...

[willtotheumm]

Sir Jeeves there is running a 7m-gte as well as am I (Only Jeeves is a lot nicer and has some mod's done to it). I believe my 7m is supposed to get... 16/20? I think? I'm not completely sure on this as i'm just going on memory since my engine is in a bahzillion pieces. haha.

[alanjoseph]

i saw a video of a 2jz with single turbo T88h installed, but it did'nt had the pipes that goes from the turbo to the throttle, so its still n/a.

i suppose the reason was to run the car in economic mode :P

will this harm anything?

[Jeeves]

Originally Posted by alanjoseph

what engine do you have, and how many mpg does it give? just curiosity...

Let's see...
- JE 0.020" overbored pistons + rings
- ARP Connecting rod bolts
- HKS MHG
- Clevite 77 bearings
- ARP head studs
- standard 3-angle valve job/stem seals/etc...

I can't honestly give you a good mpg right now. I put my foot in it wayyyy too much to be considered 'daily driving' of any sort. Suffice to say at ~1 bar + heavy foot, my mpg isn't good. My Fun Per Mile (FPM) however is off the damn charts.


I'm assuming that 2JZ is runing another sort of air metering as the Karman (I think they're stock karman vortex) would make that car run like ass in that setup. A speed density air metering system like the one I run will make take readings from the manifold and calculate fuel needs from that point. So, with an SD setup, it'll think it's NA and drive fine, except that it'll lack any sembelance of cajones.

[willtotheumm]

Originally Posted by Jeeves

...My Fun Per Mile (FPM) however is off the damn charts.

hahaha. Mine isn't even on the charts!!! My MPG's are great though. It's driven 12 miles since I got it and hasnt used a drop of gas! *coughbeingtowedcough*

[alanjoseph]

how i make a 2jz to make these popping sound :P .... http://youtube.com/watch?v=13DD-hKxIYw

they said its "two step" something like that....

[Jeeves]

A "two step" is a device that create's a rev-limiter so that you can build boost before launching.

[alanjoseph]

where can i get this "2 step" thingy? :P

[Jeeves]

It's either part of a standalone (e.g. Haltech) or a full MSD ignition system. Mk4's have a few options other than that.

[alanjoseph]

i was reading about the MSD ignition system, but does that make any damage to the engine? can i install this system on a stock engine or i need to have some mods?

and, for example ...if i set the rev limiter to 4500 rpm for a good launch, whats going to happen when i need to change gear? does it shut off itself or it will keep hittin the rev limiter?

[Jeeves]

It's on launch only. You can install it on a stock system, but your gains will be minimal it doesn't create any power it just allows you to get a jump off of the line.

[alanjoseph]

Originally Posted by Jeeves

A "two step" is a device that create's a rev-limiter so that you can build boost before launching.

before launching? but i still hear the popping sound on first and second gear.



-stock 2jz-gte

.both turbos run the same psi? can one turbo run more psi than the other?
.whats the max lbs i can set it to with a boost controller on a stock 2jzgte?
.with one boost controller, can i control both turbos?
.whats the weight of a 2jzgte?
.whats better, normal 2jz or the vvti?

[Jeeves]

First off, Google probably holds some information for you. I don't know it all, and I'm also not a good 'index', so, Try searching first.

Now.
On what video? If you run into the rev-limiter you'll hear a similar popping.

- Stock, the turbo's kick in at different points. Ideally you should match boost.
- Most boost controllers can control two turbos. Check th labeling.
- Search.
- Normal 2JZ is easier to mod/tune. vvti just makes it more of a pain.

Originally Posted by alanjoseph

before launching? but i still hear the popping sound on first and second gear.



-stock 2jz-gte

.both turbos run the same psi? can one turbo run more psi than the other?
.whats the max lbs i can set it to with a boost controller on a stock 2jzgte?
.with one boost controller, can i control both turbos?
.whats the weight of a 2jzgte?
.whats better, normal 2jz or the vvti?