98whitemax

iTrader: (15)

ok here it goes.

i have a 98 maxima with a vq30de-k and a v2 charger.
i recently installed a 13psi pulley and got some 510cc fuel injectors.
i also installed a z32 maf.
im using a vafc2 to tune

now i need helpon the base tunning before i go out and actually get it dyno tuned.

i know that for the z32 maf the in and out is set to in-2 and out-4.

i need to know what else i need to change for the fuel difference with my setup.

thanks for all the help

streetzlegend

iTrader: (8)

Doubt anyone is going to be able to give you any useful information, you need a wideband o2 sensor to be able to know what setting and corrections you need. In other words, you cant have someone elses tune/corrections on your car, because every car is different. If you dont have a wideband o2 sensor or anyway to monitor it, go to a dyno, and tune your part throttle and then little by little go into WOT, and check the a/f.

mtrai760

iTrader: (19)

Quote:

Originally Posted by streetzlegend

you need a wideband o2 sensor to be able to know what setting and corrections you need.

QFT

98whitemax

iTrader: (15)

thanks for the reply i figured i couldnt get an exact answer of use someone elses tune. i do have a wideband in the car. what i really should of said was can i get some pointers on getting it to run so i can drive it to the dyno without having any problem with lean misses or any detonation.

DAVE Sz

iTrader: (2)

?
You have a wideband so why can't you just monitor your afr while driving around? I'm having a hard time understanding what you're asking. They told you that you can't ask someone else for what tune settings to use. You said you understood that. Then you went ahead and asked for it again, just worded differently?
Use the wideband to see what areas you need to adjust. That is the whole point of a wideband. Go drive around and keep the afr under 12.4 when WOT IIRC...

98whitemax

iTrader: (15)

^^^^^ yea that is right i wasnt thinking when i did that last post
thanks to all that responded

mods you can close this thread

DAVE Sz

iTrader: (2)

sorry for being douchy about it....

Flava_24/7

iTrader: (46)

If you just need to tune it to get to a dyno and you have a WB then just tune it for 14.7 at idle and keep the AFRs at around 11-11.5
Anything below is rich but better to be rich then too lean.

DAVE Sz

iTrader: (2)

you can't tune idle...

96sleeper

iTrader: (4)

Not true. If the A/F is far enough out of spec that the computer can not compensate, then you can tune with the SAFC to get it close so the computer can tune itself. I tuned the idle on my car, it will not idle without it.

96sleeper

iTrader: (4)

Not sure if my car is unique, but it runs best with the safc set for the a32 maf. When I used the settings for the z32 maf it didn't run as well. (yes I have a z32 maf)

DAVE Sz

iTrader: (2)

yes.............

maxima92se

iTrader: (7)

Are you running bigger injectors? If so how much bigger?

96sleeper

iTrader: (4)

I have 550cc injectors, but I also have a JWT ecu programmed for the 550cc injectors, z32 maf, 50 psi fuel pressure, etc.

vinco

iTrader: (3)

The reason it wouldn't run well with the SAFC set for the Z32 MAFS is that it's already done in the JWT tune. If you want to fine tune with the safc, then definitely set it for the N60 MAFS. Not too bad an idea to fine tune, since JWT tunes are traditionally pig-rich anyway.