AFC neo tuning SR w/ z32 MAF

[Nizmo240sxcoupe]

i have a 1990 240sx coupe recently swapped in a red top sr20 ... stock injectors...Nismo FPR Walbro 255 LPH fuel pump .. can anyone help me setting up the AFC neo so that i can actually drive my car. im running a z32 MAF . it starts up and idles irregularly and doesnt rev past 2000 rpm.. thankyou for any future help.

[ELEMENT692121]

be very carefull starting it and reving it with that maf it thinks its gettin alot less air than it actually is so its running lean with the new maf .. lean is bad at any rpm .. id say that you should not drive it at all withour a pro setting up the neo for you .. if the engine is stock besides the fuel pump why run the bigger maf now ??? run an sr and call it a day the safest bet .. generaly people us the bigger maf once the stock one is maxxed out .. your no were neer close to max with a stock set up .. bigger mafs are nice with stand alones cause u can calibrate the maf before you even start the car .. with the neo all you can do is add fuel till it starts to smooth out .. but i wouldnt suggest just throwin fuel at it ..

[Nizmo240sxcoupe]

but the thing is i have motorwork done..better cams, titanium valve springs... better rocker arm stoppers,, steel head gaskets.. lighweight pulleys.. intake.. exhaust... and some other misc. stuff......and the stock MAF can only withstand 250 wheel.. and i KNOW i can get more out of that with my motorwork. thats why im goin with the z 32 MAF it can withstand soo much more.. know what im saying??

[Nizmo240sxcoupe]

also. i cant find a stock sr MAF ... all i have is the z 32 ... so if you know ANYONE who could sell one or give one up that would be awesome.... or i can do a straight up trade for the z32 MAF i have now... thanks...

[crashcourse]

I have never played with a neo but I do know in the safc2 there were settings that seemed weird 1 in 1 out a sr maf is im pretty sure 1 in and 5 out a z32 is 5 in and 5 out or the exact opposite and or check the wiring on your maf

[boett39]

alright maybe somone gere can help me i have a s13 red top z32maf and the AFC neo my car is running so rich that it hardly idles becasue it floods out it has 740cc injectors a 3071r turbo 44mm WG and 50mm BOV greddy intake.... but what do i do exactly is there anything i can do to give the car less fuel at low RPMs it backfires like mad when i let off the gas and to keep it running in nuetral i have to feather the gas or it will flood and die.. HELP!!!

[boett39]

somone please help!!!