New toy!!!

[Zippy69]

I think I'm going FMU and a t25 on the sohc in the hatch. After I get my first KA-T going of course. I'm looking into an RB25 for the hatch. Who knows?

[quick_blaze]

nice cars man. RB=SEX

[spooled240]

O, I know.. what i'd do for a 300 whp rb26 in my kouki my heart hurts when I hear a beautiful sounding inline six

I don't know if you've seen the rb25's in TX on ebay for like 2,000 dollars with FREE SHIPPING, compression tested and everything..sounds to good to be true right, kinda suspicious

Zippy, how much boost are you planning on running on the FMU? I have no clue as to how reliable these fmu's are by themselves, as far as lean spots and what not..BTW, did you get that t25 yet?
Modified by spooled240 at 11:24 PM 1/14/2008

[Zippy69]

No, I haven't seen those RB's in Tx, but I'll definately check them out.From everything I can find, an FMU will let you safely run 7-8psi most of the time without havind to do anything but retard timing IF you have a spark knock issue.The sohc in my hatch is in fantastic condition, the oil is actually oil colored.It runs strong and smooth without even the slightest hiccup or glitch. And I mean nothing.I plan on doing a swap in this thing, but it will probably be a while before I have all my ducks in a row. This way I'll get to have a little fun while I get my swap in order. Then I can sell someone a tried and true FMU set up for a decent price to help them get into the wonderful world of KA-T.

[dodge turbo diesel]

you are all lost , try switching the 2 outer wiress on the mafs. if there has been an afc installed in the car make sure the mafs wire is connected also but a little more stupid, is the mafs running the right direction. take a cigar and smoke test the mani and piping for leaks. thats the sum of the diagnostic process.

[Zippy69]

It is a stock maf, kinda hard to get it backwards. Already checked the maf wires.Oh and I don't smoke.lolThanks for the input, maybe I'll get it figured out.What I don't get is that it won't idle with the current ecu, but will run. I swapped in my 93 dohc ecu and it idles great, but bogs when you give it gas.It is an s14 ka with an s13 dizzy so it should work fine with an s13 ecu(which I know is good), right? I need to get it running and sell it so I can buy stuff for the hatch.I haven't messed with it much lately, it just makes my head hurt.

[Zippy69]

Is there any way to test a mafs?I got 2 but both act the same. What is the difference between a sohc and a dohc mafs? And how do you tell?

[spooled240]

check the stickers, are they the same number.ie: 300zx mafs is a n62, maxima mafs is a n60..

[deviousKA]

Check to make sure the ecu you are trying to use with that dohc has only a single diagnostic LED (red).

If it has both red and green, its a sohc ecu. Sohc ecu will plug into dohc harness and run it, but not very well (unless you do some modifications).

[deviousKA]

Forgot to mention. Swapped out ecu with one from my 93 and would only idle, when you gave it gas it would stall. What up wit dat?

Nevermind then......

You need to run a code check after you give it a chance to run a while with a dohc ecu.

With the dohc ecu what you do is turn the knob fully clockwise to diag. mode with the key on, engine off. After a second, turn it back fully counter clockwise. The ecu should then start blinking the LED with the code. Long pulses are the 10's, short pulses are the 1's. If you get 5 long blinks and then 5 short, that is a code 55, which means all is good. If you get any other codes, take note.

[neverlift]

If it has both red and green, its a sohc ecu. Sohc ecu will plug into dohc harness and run it, but not very well (unless you do some modifications).

like me but I'm a violent jerk and made it work

hey zippy zip down bro, I've been dealing with my own demons Looking like a real nice stable of ka love you have my freind! love teh wheels on that seafoam, picking up some oldskewl 5stars like -10offset 15x7 IIRC gonna look sweet if I get coil overs and pull my fenders some...

wtfs up with all the 4x4's?

[Zippy69]

I haven't had time to do anything on them yet. I promise I'll lower at least one them by next week. to me

[neverlift]

man cut them springs

[Zippy69]

I'm going to have to cut them, as I'm po as hell right now.

[480sx]

You'll be more poor when your shocks blow because you cut you springs.

Lol just lookin out for you man, cutting springs isnt a good idea. Nothing wrong with stock ride height..

[spooled240]

it depends how short you cut them I think, he can probably get away with an inch or two.

[Zippy69]

You'll be more poor when your shocks blow because you cut you springs.

Lol just lookin out for you man, cutting springs isnt a good idea. Nothing wrong with stock ride height..

Thanks. I have a friend with cut springs on her 240 and all is good. She got about a 2 1/2" drop while still getting a pretty decent ride. I've cut springs plenty of times, just never on such a light car, only Detroit Iron.

[Zippy69]

I put my 93 dohc ecu in the 89 with the swap. It idles fine, but bogs when you giv it even the slightest amount of gas.I starte playing with things, looking for a loose connection or something unplugged or broken. As I kept messing around with the harness, the idle would change. The rpm's would go up a bit. I kept jiggling the harness in places and when I got to the injector section, I could actually rev the engine a bit, but some times it would pop and buck, but still idled fine when you let off. A few times it reved up good. OK< so I realize that there is a wiring issue, but what might it be?Anybody done a sohc to dohc swap?This harness is supposed to be a dohc that has been modified. I don't know what would need to be modified on a dohc harness to work in a sohc car.

[neverlift]

maybe for the dash harness, but that has NOTHING to do with your injector wires. I'd unwrap the harness and take a look for skinned wires.

springs was a joke, my sisters exhusband slammed his sentra with cutting them, he went to far. It was a good drop but the **** slammed bump stops all day. go with a stiffer strut and you might be alright. I cut some as a joke today lol, I might put em on and rock the low look till I get coil overs in feb. and do it right, and try to get a little back from my current setup.gr2's and teins

[Zippy69]

It was srange, everytime I lifted and pulled the injector harness, it allowed me to rev a little higher until I could rev it up without any problem. I had to shut it down because the engine was getting hot, no fan shroud and probably no thermostat either. I'm going to try again and see if I can find the problem. I checked codesand only got knock sensor, and coolant temp sensor, which I had unplugged a few times while it was running.Could it be just that the ecu was learning and that I just happend to be messing with the harness at the same time?