Judasentinel666

Hi mate, Will you ship to Canada? pm me for details and we can make a deal. I need it rightaway, so if we agree on a price, I will paypal you the money.

As the title says, I am looking for a USED Apexi Power FC or an AEM FIC for Series 1 RB25DET. I am using the RB20DET loom and chipped ECU from the RB20DET to run my RB25DET. I live in Canada, and will pay for shipping. Please let me know what you have. I know the new unuits go for anywhere between $1200-1500, but I'm looking for something used, as long as its working. A little desperate now, mates, as my build is being affected by not having a proper tuning system. PLEASE HELP!! Thanks, Judas

Hey...... I have already checked and there is spark on all the plugs and the plugs are also fine. I replaced the plugs in 2 & 5 as well, but no change. If there is spark on all coils, and the injectors are firing, and assuming that the cylinders are all ok (I am pretty confident on that, since the CR was around 180+ on all of them), then the only issue could be a bad ignitor OR the wrong firing order. I cannot think of any other reason. The ignitor is also fine (its the RB25 one, with 7 pins on the wiring loom side and 6 on the coil side). Is that how its supposed to be? And assuming again that the ignitor is also fine, its a weird situation. That's why I need to know how to check the order of things. Thanks for the wiring diagram too . I have the R33 manual as well as the R32 one. I have tried to compare the two diagrams (20 and 25) and have an idea of the differences, but those differences are already taken care of. The thing that baffles me is that the ECU is showing code 21, which seems to suggest that everything is ok. Now if thats the case, where could be the problem? Hence my desire to know the firing order and wiring issues. Judas

Thanks, guys for all your replies. The issue is that the wiring loom from my RB20DET was already modified to work with an RB25DE. And since that motor was chucked out and an RB25DET was put in, something got messed up in the motor. Cylinders 4 and 6 are working just fine. And as regards the compression in 2 and 5, even if the cylinders were low on compression, there would still be SOME power in them, and when one would remove the coil on either one of them, the revs would drop. Right now, even if I disconnected coils #2 and 5 together, the engine continues to run unaffected and the revs dont drop. And thanks, drf76 for the interesting GIF on the differneces b/w 20 an d 25. I am aware of the differences in the pinouts, but my ECU has already been rewired to run an RB25 (DE, not DET). The issue is not the cylinders 4 & 6. Its 2 and 5. And I need to know if all of my ignition and injection wires are properly sequenced and connected. The circuit diagram does not tell me much except which pinouts feeds what sensor. What I really need is to know HOW to redo these wires (injection and ignition). I want to do it right this time, from scratch. So my query would be: 1. HOW to make an injector loom to be connected to the main wiring loom. 2. Same as above for ignition. I already have the coils and the harnesses with plugs. What I dont know is which pin on thne ignitor goes to what cylinder and how dpo I draw power to the ignitor 3. How can I check if the injectors are ALL firing or not? I tried listening to each one of them by rotating the CAS, and I would hear a tick every half revolution of the CAS shaft. Does it mean that they are all firing or is it possible that the firing order is stuffed? 4. How can I ascertain the firing order for the ignition coils? BTW, how much voltage should each coil have and how does one check that? For now, this is what I need. I will post my progress when you mates give me suggestions and I will try them all out. Thanks, mates. Judas

When I swapped coil #2 with #1, nothing changed, in that it was still no. 2 that did not result in revs dropping when I would remove it, and same with no. 5 when swapped with another one. Shows that the coils themselves are not faulty. And they are S1 coils that came off my RB25DE. I checked the ignitor, and the thing is that all coils have power in them when the ignition is on. I am beginning to think that there is something wrong with the firing order. All coils have power, all injectors are firing, yet there is a lot of smell of gas and cylinders 2 and 5 do not seem to be combusting (producing power). I read somewhere on here that no. 2 and 5 coils are connected. What if their firing sequence is altered/reversed? I wish someone could help me with HOW to redo the ignition and injector wiring for an RB25DET to run with RB20DET ECU. I think that if I can do that, things will be alright. Thats where I believe I need the real help. Judas

Alrighty mates, I have been up and down the hill looking for the solution to my gremlins, but to no avail. So I have decided to write my story here and see if someone on here can help me. I had an RB25DE (N/A) in my R32 Skyline, running with Greddy Emanage and an RB20DET ECU, and RB20DET wiring loom. Recently, I put in an RB25DET (Series 1). And since then, my car has been running on 4 cylinders. I found this out by removing the coils one at a time, to see which ones were faulty. As it turned out, the revs dropped every time except when I removed no. 2 and no. 5, which makes me think that perhaps there is something wrong with the coils at 2 and 5. I tried testing them for power and they have a spark when I turn the key on. I thought it was the injectors, but couldn't figure that one out, since they seem to be all firing. Somebody said that maybe my coil firing order OR the injection order OR both were out. What is it supposed to be and how do I confirm what order I am running? Now I am using the RB20DET wiring harness, which was working fine with the RB25DE, but ever since the RB25DET was dropped in, the car is on 4 cylinders and not 6. Cylinder 2 and 5 seem to be not doing anything at all (they are not dead cylinders).....There is a LOT of smell of petrol from the exhaust, which makes me think that perhaps the injectors are all firing, BUT the coil firing order is messed up. I am using an RB25DE/DET ignitor (series 1). I tried doing the continuity test on the injectors and this is what I found: Injector 4 and 6 seem to be connected, and so do injectors 1 and 3. Nos. 2 and 5 are alone on their own. Is it all supposed to be that way? I cannot for the life of me get it to run on 6 cylinders. What do you guys think could be the problem(s), and how can I resolve them? Mind you, I have removed the Emanage and now will be trying to run the RB25DET with just the RB20DET ECU and stock RB20DET wiring harness. Realizing that the injectors size is different, I will be getting the ECU chipped soon, but first I want to make sure that the motor is running on all 6 cylinders. I have tried to search on the forum for pertinent info but couldnt find details. ANY help would be greatly appreciated, mates. Cheers, Judas

Hi there. I am curious to know what differences, if any, exist between the internals of RB25DET and the RB25DE (N/A). I am currently running an RB25DE with a turbo on it, but due to higher compression, cannot run more than 10psi of boost. I have been informed that the internals of the RB25DE are WEAKER, not made of the same material as the RB25DET, and since the compression of the motor is higher, I cannot run more boost, which also means that I am limited in my options for upgrades to get more power out of that motor. My RB25DE also does not have oil squirters in the pistons. I didnt know that there were oil squirters in the BR25DET pistons. So, my issue is as follows: I can EITHER buy an RB25DET (full motor), OR change the internals on my RB25DE to make it the same as, or better than, an RB25DET. All I want to know is that if I want to run more boost (like 15-20 psi or 1.4 bar) on my car with the N/A motor, what all do I have to change inside of it? And how do I go about doing it? What pistons, crankshaft, camshaft, etc., is recommended? Do I keep the same head and valves or d they need to change as well? Please help me, I desperately need someone to guide me here.

Hi Shawny, Nice numbers. What mods do you have on your car? I am a new member here, from Canada, and have been having all sorts of troubles. If you can help me with stuff here, I would be grateful. I have an RB25DE with an R33 turbo on it, Trust FMIC, 370cc injectors, Turbosmart BOV and boost controller, with stock RB20DET ECU and Gredy E-Manage). Everything else is stock from my RB20DET days. Since they are new to Canada (how pathetic this is, lol), not many people know how to fix a Skyline, at least not as much as Australia or UK or Japan. I am having troubles with idling (The TPS I am using is for the RB25DE, but my ECU is RB20DET, and the AAC valve is not working)....the cars sputters and backfires a lot, it hesitates under load and when I give gas. The power just doesnt seem to be there. Right now, after being dynoed once (260 rwhp), it has started sputtering between 2000-4000 rpm range, and the sudden bog/hesitation is still there. I dont know what is going on. What do you suggest? Also, please do share what youve done to your motor to get such impressive numbers. My motor also has the VCT on the intake side, but I dont know how to activate it with a switch. Thanks, Judas