singlecamcammed240

i am looking for a clean uncut upper and lower engine harness for an rb20det. i can make do with just the upper main harness section. both are preffered for the swap wiring, let me know what you have and how much, also it will have to be shipped to the states, as thats where i am from. thanks

okay i checked the resistance today of the injector harness plugs and the plugs on the injectors. the harness side was reading 7.2 ohlms and the injectors were reading 14 ohlms. so does this mean i need a resistor box, or is this normal?

the car runs the same with the stock fuel pressure regulator and the aftermarket adj. fpr. i have which is set to 43psi.

okay i wil check the ohms as stated, and i have a wideband a/f guage it stays maxed out a 10

your link did not work for me when i clicked it. also the place that wired it is called http://wiringspecialties.com/ they seem pretty professional to me, i still think its my injectors, they think that also. on the US forums people speak highly of them for swap wiring.

i have not tried changing out the cas, i dont know of anyone aound here with extra rb parts let alone rb's. the spark plugs are new , i checked and it looks like i'm getting a strong hearty spark. everyone that comes over here tells me its the injectors, i think the pulse of fuel coming out of each injector is just too long, meaning way too much fuel, is there any way to check the impedence of the injectors?

yes, i forgot to add i have a safc neo, but with -50 at high and low thottle across the map it does not even make a difference. my injectors are from jps trading on ebay, they were supposed to be high impedence just like stock rb20 injectors, could they maybe be low impedence and be screwing everything up? is there a way to check if they are low or high?

I swapped a rb20det into my single cam 240sx, i had the wiring done professionally. the car would not run right when i got the wiring back, so it got sent back out to be checked over, and the place said everything was fine. they could not find any problems. now something else has to be the problem, i cant figure it out. the mods are hks2535 turbo, used sard 550cc injectors, 255lph fuel pump, z32 afm and carl h. tuned ecu. i also have a random ecu from ebay that is supposed to be tuned for my setup, car runs the same with both ecu's so is cant be the tune. i was getting codes 23 and 45, i checked for leaky injectors they dont appear to leak when the key is on and the rail is pulled. code 23 went away after i did this check on the injectors. the car runs so horribly rich that in order to start the car i have to pull the fuel pump fuse and then install it when the motor starts to fire. in neutral the car will rev to about 4500-5000 rpm and then the car definatly had a fuel cut at 3000rpm when i took it for a short drive. its like it is in limp mode. its not the afm because it is a new reproduction one. the fuel pump relay and the other relay near it (close to the ecu on the harness), (i forgot the exact name of the relays) both stay on now, they did shut off untill the car ran for a while when we were trying to figure things out. they stay on and wont reset untill i unhook the battery, so now when i take the key out of the ignition the safc stays on the windows still go up and down and my dashboard indicator lights still stay lit. does anybody here know what the problems could be? or what to look for? thanks let me know

the way i set mine with out actually driving the car was to use a vaccum/pressure pump with a pressure gauge. i just kept adjusting the linkage out untill it had the amount of preload needed to open at the amount of boost i wanted to run. this way is much easier than driving and adjusting repeatedly untill you get what you want.

i have a rb20det swapped s13. the setup i am needing a tune for is: hks2535 turbo z32 afm sard 550cc injectors walbro 255lph fuel pump i will also be running 93 octane the car starts and runs terribly rich i also have a apexi safc neo for minor corrections. here in the states (buffalo, New york) i am having a hard time finding someone who can tune an ecu by mailorder. there is one tuning shop by me that specializes in dsm and subaru, but i would like them to be my last resort as they will have to do some costly dyno tuning in a car they dont really know. i would like to get a good first time tune that will not require me to be sending the ecu back and forth to austrailia more than one round trip. let me know thanks, ken

try using a rubbing compound, that usually works for me

welcome to the forum

here in the u.s. those cars are called nissan altima's. the ka24de is also very easy to come by here and those cars are pretty common to find in junkyards by me. if you search nissan altima replacement motors it might be easier to find a ka. the fwd version of the sr20 i would imagine should bolt in. I have never heard of that swap. the best way to look and see if it would swap would be to look at the motormount setup of a fwd sr20 and see if your ka ones look the same and look to be in the same places. the wiring should be the same as a sr20 going into a 240sx or s chassis car here, check on nicoclub.com to see if it has been done before

i too was also wondering the same thing, as i just got my rb20 running in my s13

the local tuner around here used it for the first time and got that e30 gtr to run good within a half hour, apparently the tuner could not get a good tune, or the car to even run right with aem ems. i went to a drift event today and talked to other rb owners and i was talking about full standalone ems and i guess this guy can remap ecu's and get them to run really close to perfect, he also specializes with rb20 tunes. im gonna try and find him on a few forums, i guess he is carl h. if you've ever heard of him

is there any reputable places that do remaps i can send my ecu to, if not i'll just have to save for a stand alone. i will look more into nistune, has anyone ever heard of vipec, a guy locally recomended that to me, im sure you all have heard of his car its the rb26 gtr powered bmw e30.

i just swapped an rb20det into my s13 chassis and got it running today, it runs super rich as is. i have an apexi safc neo hooked up and yes i know that is not enough for tuning. my set up is a z32 maf/afm, walbro 255lph fuel pump, hks 2535 turbo, and sard 550cc injectors. stand alone would be nice but i would prefer to do something more affordable. what options and advice can i have for tuning?

no this does not remove the speed limiter. the safc does not splice into your speed signal wire. theres other ways to remove the speed limiter, just search.

well the other day i was on ebay and found a deal on a tuned ecu by JUNKY PANIC TUNE its set up for the 2535 turbo gtr fuel pump 550cc injectors and z32 maf so i hope this will work good. has anyone ever heard of this tune, they are out of japan, its the same seller i got the turbo kit from. i know i mentions i have the 450cc injectors but the safc should be able to correct that, but i will be keeping my eyes peeled for som 550's

oh yea i forgot to add i have an infiniti q45 maf, will that work? in know its close in size to thez32 maf b/c people always compare the two. i would like to tune it myself because of where i live. there is a tuning shop around, but i hear they are only good with subaru's and dsm's. i'll have to look more into what you guys have mentioned. i would probably send my ecu to austrailia because from the other RB guys around home, you austrailian's seem to have the sickest skylines. also how many bar of boost is recomended to run with this turbo. thanks for your input so far, keep the info coming!

I am getting everything ready for my rb20. it will be going into my 1990 240sx, i got a good deal on a new hks2535 kit, it seems like some people are just running them with stock ecu's and a fuel controller, which is what i planned on doing. After some research i am finding that some people are running tuned ecu's im just wondering what i should be doing to be making the numbers i want. i have 450 cc injectors, an apexi safc neo,and walbro255 lph fuel pump for tunning so far. i will be running a fmic and 3inch exhaust. i would like to be making between 300 hp and 350hp (220kw-265kw) to the wheels if thats possible. i just want to know what i should do to tune this and have a healthy running engine. if i need bigger injectors thats not a big deal, but they came with the engine, so i planned on using them