Sr20det

[fairladysx_s13]

Ok so i was wondering if i can use the ka24de maf if im running stock boost? And also is it necasary to change the fuel pump if im only runnin 7psi? Just ordered my swap so im jus getting the final things together.

[sliddinsil8o]

ka maf wont work with stock sr ecu...

[unicoladron]

get rid of your crusty old fuel pump. get either a walbro or 300zx tt fuel pump (walbro is cheaper, and imo, works just fine). i've lurked around here for fuel problems and bogging. half the time it's a shitty fuel pump or some BS like that.

[fairladysx_s13]

so im ganna need either a z32 maf or a q45?

and itd be on the safer side for a better fuel pump. got it

[ecuastyle84]

use a sohc maf or sr maf if you wanna run stock

even if you are running 7psi stock you should still upgrade the fuel pump...without it you'll start bogging and puttering.

[fliprayzin240sx]

so im ganna need either a z32 maf or a q45?

and itd be on the safer side for a better fuel pump. got it

You dont need them, but it would be an upgrade once you start pushing for more power pass the 280whp mark. If you upgrade to a bigger maf, you will need something for the ECU to make up for it. A piggy back like a SAFC or get your ECU retuned for it.

[fairladysx_s13]

Ok so if i wanted to be on the cheap sidde just to have everything running i can use a sohc maf, stock fuel pump (actually tested a month ago and its very strong still), and a z32 fuel filter?

[ecuastyle84]

Ok so if i wanted to be on the cheap sidde just to have everything running i can use a sohc maf, stock fuel pump (actually tested a month ago and its very strong still), and a z32 fuel filter?

even if your stock fuel pump is still strong i would upgrade to a walbro or any other upgraded fuel pump just to be on the safe side....and yes upgrade the fuel filter to a z32 as well...heres something that might help you on your process:
http://www.zilvia.net/f/showthread.php?t=62607

happy swapping:D

[thedecapitator]

has anyone unplugged their iacv sensor plug and knock sensor plug while the car was running?? and did it affect the idle or performance of the car??

i unplugg mine and nothing happens..

just wwanted to know dont want to bump my old thread..

also the shiftknob shakes a bit like a retarded shake and sounds like misfiring

i replaced my sparkplugs with ngk like 2 months ago

so what can be the problem??

anybody nplugged those to plugs though?? let me know please..

[nissanguy13]

If you put a Q45 or Z32 MAFS on you'll have to tune your ecu. If you are not upgrading the turbo, fuel system etc it's a waste of money just to tune the ecu for the z32 mafs. Wait till you get everything, tune ecuand put on then. No you don't need a walboro unless you're running a different fuel system. Unless yours is bad or gone I wouldn't replace it. They come with stock fuel pumps on a Silvia in japan, so why would a 240sx with an sr be any different?

I love how everyone thinks that when they do a swap they need all these upgraded parts. If you go to japan these cars don't come with all these upgraded parts from the factory.

[nicku]

so here is my question...sorry for jacking the thread. but its related
my set up right now is stock 370cc injectors, stock maf, stock boost, and orignal fuel pump, i have after market exhaust and t28 turbo on my redtop. the wideband reading is a little rich. the idle is about 12-13. when cruising is about 14.3-15.3 when i floor the throttle its about 12-13.
im just wondering do i HAVE TO change the walbro? or i can be just fine for the current setup? what's the symtoms when the fuel pump is not powerful enough?

[nissanguy13]

so here is my question...sorry for jacking the thread. but its related
my set up right now is stock 370cc injectors, stock maf, stock boost, and orignal fuel pump, i have after market exhaust and t28 turbo on my redtop. the wideband reading is a little rich. the idle is about 12-13. when cruising is about 14.3-15.3 when i floor the throttle its about 12-13.
im just wondering do i HAVE TO change the walbro? or i can be just fine for the current setup? what's the symtoms when the fuel pump is not powerful enough?

Your car doesn't get enough fuel so it cuts out, drives choppy etc

[nicku]

my car right now starts shaking from 2200 rpm. and sometimes its like not so smooth...especially in low rpm range. sometimes when i maintain the throttle, in low rpm, it feels like the car decrease the throttle a little bit by itself. and when i make a turn, for example, before the turn in shift to second gear, and brake, and when i step on the gas again, the car is like bogging and puttering

[180sx_Drifter]

yup you need to upgrade your fuel pump for shure. its like you are depriving your motor of fuel it wants. change that and you should be fine*for now*

[nicku]

but if the fuel pump is not powerful enough, why the car is still rich? i mean if the fuel pump is not powerful to provide the fuel that the engine needs, how can the car still be rich? im not suspecting you, but i just want to know the reason :)

[rlpinoy]

its always like that for every sr20det that i know but its better to run rich than lean.

[nicku]

i know that...but my question is if the fuel pump is not enough to provide the amount of fuel that engine needs, how can my car still be rich?

[fairladysx_s13]

i totally love how my tread isnt about my swap anymore haha. But thanks guys. I got the stock sr maf and if see how the fuel pump runs at first. Ill prob upgrade it in a week or so. Im going to be all stock for now basically. Stock intercooler, stock t25 turbo, stock injectors, and yea im basically ganna have a stock 180sx with a bigger downpipe and exhaust, and a cone filter. Thanks again.

[DynastyJAM]

i like cheese

[DynastyJAM]

o sry jay, just thought that statement was more important than you lol. jk, jus get an RB...n if you got a bigger MAF and had to retune anyway...jus drop a t70 on that B. HA, who the hell would do that!

[mnmax]

i know that...but my question is if the fuel pump is not enough to provide the amount of fuel that engine needs, how can my car still be rich?
that's just how your stock ecu is setup. it's setup like that in all factory vehicles so as to not have any premature knocking. the sr ecu is set to run more fuel than the ka ecu and that is why they have a lower flow pump. you want to switch to a higher flow pump so that you get the right amount of fuel in there that way your o2 sensors won't be reading as being too lean and make you bog out.