I just swapped in a u12 bluebird, and after it was in I found out the motor had internal problems, so I got another motor out of warranty, and it has a silver valve cover, so I am guessing its a avenier, the fuel rail is damaged, and has purple injectors i think, and the oil filter adapter is different, also its out of a auto, so I am going to swap the intake manifold and fuel rail, the oil filter adapter, is there anything else I need to do? Thanks
ok, I just got the motor in and fired it up and it doesnt idle, and when I give it some gas it misses quite a bit and runs super rich, the plugs foul after a few minutes, now it wont start, I looked over everything and it all looks plugged in and good, its a u12 bluebird ecu, u12 fuel rail, tps, distributor, coil, oem o2 sensor, and a maf from a s13, the motor itself checks out fine with compression and good cams, so i am thinking it might be the maf, does the oem maf for a usdm sr20de work with a u12 sr20det? I also found around 20 ohms resistance on the maf and found the main motor to chassis ground was loose, so I fixed that and then it had 5 ohms resistance, so I hooked up a jumper for the ground and it still ran bad, any help?
what car, what ecu..... if its running rich it could be ur tps and maf most likley the later, how did u run a bluebird ecu... what wiring harness did u use?
ive never heard of running a jdm ecu with the oem harness... unless u cut 92 wires or so... the plug shouldn't plug and play.. i cannot belive that, and someone plz correct me if im wrong because i have a avnier ecu sittin in my closet and im sendin my oem out to be reflashed id love to save the money, let me know what u hata do for ur bluebird ecu into the oem harness, but id check again, the maf works with a usdm ecu, but as u know tehre are no sentras in the states with stock turbos and usualy are not ready to accept the higher air flow. another thing is many jdm cars coming stock with turbos use MAP based programs and ecu's while the american versions use MAF programs and ecus.... the diff being the ecu reads manifold pressure rather than the volume of air entering through the filter and maf....
ive never heard of running a jdm ecu with the oem harness... unless u cut 92 wires or so... the plug shouldn't plug and play.. i cannot belive that, and someone plz correct me if im wrong because i have a avnier ecu sittin in my closet and im sendin my oem out to be reflashed id love to save the money, let me know what u hata do for ur bluebird ecu into the oem harness, but id check again, the maf works with a usdm ecu, but as u know tehre are no sentras in the states with stock turbos and usualy are not ready to accept the higher air flow. another thing is many jdm cars coming stock with turbos use MAP based programs and ecu's while the american versions use MAF programs and ecus.... the diff being the ecu reads manifold pressure rather than the volume of air entering through the filter and maf....
SO how about this, i use my sr20de ecu, with sr20de maf and get e manage, would that be a good idea?
Umm...no, none of the nissan jdm turbo swaps have map over in japan. Bluebird, avenier, and gtir all use maf's...and on a side note so do all of the rwd motors! Silvia Sr20det, ca18det. skyline rb20det,rb25det, rb26dett. Some of the other manufacturers use map sensors...but nissan does not. Also...no you do not have to cut 92 wires to swap the jdm ecu in. A b14 sr20 ecu only has like 58 pins used on the ecu(b13's, and jdm bluebird/avenier/gtir's have like 54 iirc), most of which are the same as the equivalent jdm harness. The differences in harnesses are usually because of the differences in emission systems... for example egr isn't used on the jdm cars. The only way you are going to get map onto a nissan for any of the common swaps will be standalone fuel/engine management. The reason most people don't use the jdm ecu's is simple...In order for it to work you would have to use ALL of the sensors from the jdm engine, and any of the extra engine compartment sensors from the factory turbo set-up. Also, on some of the wiring the sensor connections are reversed from usdm. The most cost effective way to get a swap running good is a tuned ecu loaded with a turbo program(JWT), z32 maf, and 550cc injectors, with stock se-r harness, and engine temp sensors. The maf upgrade and injector upgrade are obviously optional, but I would recommend them as it allows you the ability to run a little more boost safely - to get the most from your swap.
well i dont have the money for injectors would I be able to get e manage to work with my factory sr20de ecu and maf? I have also been told to use a u13 ecu, gti-r maf and usdm sensors, would that work okay or would I still run into probs?
Last edited by PDX_SER : May 4th, 2006 at 09:27 AM.
Yes, you could get e-manage to work...but whats the point? JWT can tune your sr20de ecu for anything you want...such as stock sr20det injectors(which are still larger than sr20de injectors - det has 370cc IIRC), stock maf(z32 highly recomended though)for only $500-$600, and it will run perfectly without having to screw around with it. E-manage with all harnesses required will run you right around the same price range(plus tuning time/expense...to get it running right you need to get it tuned on a dyno with wideband o2) . As for the second combo - u13 ecu, gtir maf, and usdm sensors? Im not too sure about that working out right...but even if it did - once again the cost is an issue...thats probably around $300(or more) worth of parts...just to make your car run "ok".
This isn't a debate...you asked and I gave my opinion. If you want to use an e-manage then go for it. But I don't know how you think wiring in, and setting up/tuning an e-manage would be faster than removing your old ecu, and plugging the new one into the factory plug. the e-manage is only like $70 cheaper than a jwt ecu...and even with the jwt you don't need to "buy a new ecu when you upgrade"...you just send it back and they will re-tune it to your new set-up for $100. the one big thing here that I don't think you understand...is that with an e-manage, you will NEED dyno tuning to get the most out of it. If you are an experienced tuner (which it doesn't sound like...) you could probably tune it pretty good without a dyno. There is a reason almost everyone uses a jwt ecu when they do swaps - it isa simple solution, runs great, and is the most cost effective way. The decision is yours...
well the main reason im going with e manage is cause jwt takes 3 weeks, around $500, e manage costs $500 for ultimate with everything i need, or e-manage blue with all i need for $300, and I know of a few people with experience in tuning it that will help me out and I want to learn about using anyways, and I might be changing a few things later on that I dont have money for right now like a better maf, higher fuel pressure etc
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