KA-t SAFC2 Settings wanted! (t25) - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Prok0 · 11-05-2009, 10:56 PM

Simple math.
370 x .73 = 270

So your new injectors are 27% (1-.73=.27 or 27%) larger then your stockers, take out 27% fuel on low throttle map to get it to idle.

-27 across the board on low throttle pretty much

Then just get a wideband or get on a dyno and tune the high throttle map, set decel air function, etc. etc.

Everybodies settings are going to be different.

I also forget the MAF correction but you can probably find that in a second.

s14unimog · 11-06-2009, 09:43 AM

Quote:

Originally Posted by Prok0

Simple math.
370 x .73 = 270

So your new injectors are 27% (1-.73=.27 or 27%) larger then your stockers, take out 27% fuel on low throttle map to get it to idle.

-27 across the board on low throttle pretty much

Then just get a wideband or get on a dyno and tune the high throttle map, set decel air function, etc. etc.

Everybodies settings are going to be different.

I also forget the MAF correction but you can probably find that in a second.

This is great advice, and coming from a previous T25 KA-T owner I would follow what he's said here. The Stock S14 MAFS can handle 7psi btw... Once you hit 10, you'll max it out and go to full rich.

2chuki4u · 11-06-2009, 05:56 PM

i can see what hes saying by subtracting 27% out of my low throttle IF i had a stock mafs. but im running a n60 so shouldnt i set it at 0?... see thats whats got me right now. but otherwise, yea i do appreciate the help. +1.

byt the way im s13 not s14

Prok0 · 11-07-2009, 12:18 AM

I think the whole deal with the n60 maf and 370s was if you were running a stock ecu without the AFC.

I remember reading some shit about different maf housing sizes, etc. to get it to run properly.

But you have the ability to change your MAF input type in the afc to in essence 'trick' your ecu into reading the n60 properly...

Also, maxing out the stock maf really isnt that big of an issue, mine was maxed out pretty much once I got into boost on my KA-T, but it made it kind of nice since maf voltage stayed constant it made tuning with my wideband really simple.

So yeah, -27 and then just do the MAF correction deal, under the MAF table it should say like __ In __ Out, and you just have to put like 2 in 5 out or w/e corresponds to the MAF you have, I cant recall off the top of my head what the settings are for n60...

11-05-2009, 10:56 PM	#1
Prok0 Zilvia Junkie Join Date: Apr 2003 Location: FL Age: 38 Posts: 376 Trader Rating: (0) Feedback Score: 0 reviews	Simple math. 370 x .73 = 270 So your new injectors are 27% (1-.73=.27 or 27%) larger then your stockers, take out 27% fuel on low throttle map to get it to idle. -27 across the board on low throttle pretty much Then just get a wideband or get on a dyno and tune the high throttle map, set decel air function, etc. etc. Everybodies settings are going to be different. I also forget the MAF correction but you can probably find that in a second.

11-06-2009, 05:56 PM	#3
2chuki4u Join Date: Sep 2009 Location: Gurnee, Ill Posts: 5 Trader Rating: (0) Feedback Score: 0 reviews	i can see what hes saying by subtracting 27% out of my low throttle IF i had a stock mafs. but im running a n60 so shouldnt i set it at 0?... see thats whats got me right now. but otherwise, yea i do appreciate the help. +1. byt the way im s13 not s14

11-07-2009, 12:18 AM	#4
Prok0 Zilvia Junkie Join Date: Apr 2003 Location: FL Age: 38 Posts: 376 Trader Rating: (0) Feedback Score: 0 reviews	I think the whole deal with the n60 maf and 370s was if you were running a stock ecu without the AFC. I remember reading some shit about different maf housing sizes, etc. to get it to run properly. But you have the ability to change your MAF input type in the afc to in essence 'trick' your ecu into reading the n60 properly... Also, maxing out the stock maf really isnt that big of an issue, mine was maxed out pretty much once I got into boost on my KA-T, but it made it kind of nice since maf voltage stayed constant it made tuning with my wideband really simple. So yeah, -27 and then just do the MAF correction deal, under the MAF table it should say like __ In __ Out, and you just have to put like 2 in 5 out or w/e corresponds to the MAF you have, I cant recall off the top of my head what the settings are for n60...