c18det maf and injectors??

[240freak90]

hey guys,

ive been researching on this forum for about for months now and i have to say this is by far the best 240 site out there!

i havent ever posted before cause i only have internet on my phone. i have an 89 sohc ka with fresh rebuild .020 over pistons, balanced, p&p head and intake, and im going to be putting on a T3 ball bearing turbo off an 88 daytona shelby z on it in the near future. my question is can i use c18det maf and injectors without a tune? i know u have to tune for each individually but if the maf is calibrated for the injectors then it shouldnt matter should it? i was going to do an fmu till i can afford bigger injectors and an safc but if this will work then ill just do it. what do ya think? will it work?

[Razi]

You will need a tune to properly use a different mafs and injectors.

[Chris28]

Razi's right, you are going to need a tune.

They are 370cc so you will have to tune for that size. The MAFS has nothing to do with the injector size, it's just a sensor that tells the ECU what's up. Without the proper fuel maps on the ECU, you won't be getting the right amount of fuel to the injectors.

[DevilMB3017]

Just so the rest of KA-T knows, on a lot of domestics you just need a different MAF and then bigger injectors will work. Reading the Summit catalog in my, err, office, helps out sometimes, :P.

Unfortunately 240freak90, the Nissan 240SX isn't like those cars. You will need to tune the ECU or use a piggy-back device to use a different MAF or injectors. It is much better idea to tune the ECU or use a standalone computer rather then a piggyback in most situations.

[WDRacing]

I'd love to drop in a set of 42lb injectors with a new MAF like all my 5.0 buddies

[Chris28]

Yeah, a friend of mine is thinking of building up a 5.0 as a drift/auto x car. Yesterday he was like "Dude...can't you just get a MAFS calibrated to a bigger injector size? That's what everyone with 5.0's does and it seems really easy!"

Haha i wish.

[DevilMB3017]

There's a FOAF around here that runs a 5.0, with injectors/MAF and a progressive NO2 setup. I think he's in the low 11s pretty regularly.