2jz-gte Experts.......

[dori dori]

... im going to Jambo!!

Cool.... I'll enter it in Sport RWD and go head to head with 1JZ747.

[2JZR31]

Gotta enter the the R31!

[Mos]

There's definitely power to be gained by taking some fuel out of the stock maps. Take a look at any dyno run with a stock 2JZ-GTE, as soon as it comes on boost the AFR's drop well below 11:1 and stay there. Nice and safe but by no means optimum for power.

Norbie, interestingly (ex) mine put down 222rwkw on 13 psi and 12:1 AFR (at the top). Started off with 11.6:1 at 120km/h (180rwkw), and leaned out to 12:1 at 145km/h. This was with 3" exhaust, hybrid style cooler, and everything else basically factory. I've gotta dig out the dyno graph before the cooler.. 185rwkw and insanely rich.

By the way, this apparently was the last series of the JZS147 Aristo, with twin front airbags. The turbos had no marking on them. The MAP sensor tops out at 17.5 PSI (measured) - no idea on boost cut value.

Mos.

[Norbie]

Norbie, interestingly (ex) mine put down 222rwkw on 13 psi and 12:1 AFR (at the top). Started off with 11.6:1 at 120km/h (180rwkw), and leaned out to 12:1 at 145km/h.

That certainly is interesting. Perhaps the very rich AFR's happen when you crank the boost right up, and the ECU goes into panic mode and dumps in as much fuel as possible?

[chris davey]

Cool.... I'll enter it in Sport RWD and go head to head with 1JZ747.

Think it will be called Street RWD and I will be entering in it

[1JZ.747]

you think the editor of the national sport compact magazine would be on top of that type of thing chris, but hey hes "changed"


also you'll need it to haul a 11.7 to qualify big boy, so you better get that 1000hp jet Nos system into it i lent you.

[chris davey]

I have a sneaking suspicion that this years bump spot will be a lot slower than last years

[2JZR31]

That certainly is interesting. Perhaps the very rich AFR's happen when you crank the boost right up, and the ECU goes into panic mode and dumps in as much fuel as possible?

Thats what I reckon.

[2JZR31]

Do you need any licenses to enter the Jambo?

[Adam_Cressi]

Can details on jambo be found anywhere?

[chris davey]

You need a car licence (although I think it can be suspended)

They aren't up yet but will be as soon as the rules are finalised.

[Mos]

That certainly is interesting. Perhaps the very rich AFR's happen when you crank the boost right up, and the ECU goes into panic mode and dumps in as much fuel as possible?

Yeah, it must be something like that. With no cooler it was richer than 10:1 (limit of graph). So there'd be a few things that would determine panic mode.

BTW guys, please try to limit the responses to things relating to 2JZ-GTEs.

Mos.