GankTank Posted November 10, 2010 Share Posted November 10, 2010 Hey guys, recently stumbled across this site so thawt id pick your brains, i have a c35 laurel which use to be rb20de, now gen 2 rb25det, realised that it boosting only a low 5psi so researched y so low, came to think that maybe it still had non turbo computer but cant find computer numbers anywer?!?! 23740 0v300 PCMNR 030 C1 6Y05, Anyway..... thawt id try another ecu from a friend which is a rb25det gen 2 but az i went to plug loom into det ecu noticed that connection points are way different, gona b a pain if i havto change loom.... Any suggestions? and info on ecu numbers? Cheers Link to comment https://www.sau.com.au/forums/topic/343807-problem-after-problem/ Share on other sites More sharing options...
GTScotT Posted November 10, 2010 Share Posted November 10, 2010 5PSI is stock boost without the solenoid plugged in. Link to comment https://www.sau.com.au/forums/topic/343807-problem-after-problem/#findComment-5542755 Share on other sites More sharing options...
bluey33 Posted November 10, 2010 Share Posted November 10, 2010 As above boost is 5psi-7psi running through factory boost solenoid. Boost gauge could also be faulty. But as you said, the loom does not seem to be matching up to ECU... Best to take pics of loom plugs and ECU and post them up. In your case though, if i were in your shoes I would be taking it to a reputable workshop. Link to comment https://www.sau.com.au/forums/topic/343807-problem-after-problem/#findComment-5542781 Share on other sites More sharing options...
GankTank Posted November 10, 2010 Author Share Posted November 10, 2010 As above boost is 5psi-7psi running through factory boost solenoid. Boost gauge could also be faulty. But as you said, the loom does not seem to be matching up to ECU... Best to take pics of loom plugs and ECU and post them up. In your case though, if i were in your shoes I would be taking it to a reputable workshop. Ok will upload photos tomorrow, btw this is my first turbo vehicle so i am totaly in new grounds thanks for your time guys Link to comment https://www.sau.com.au/forums/topic/343807-problem-after-problem/#findComment-5542805 Share on other sites More sharing options...
Harey Posted November 10, 2010 Share Posted November 10, 2010 As others have already said. Geeze your game doing an engine conversion yourself on your first turbo vehicle! Link to comment https://www.sau.com.au/forums/topic/343807-problem-after-problem/#findComment-5542926 Share on other sites More sharing options...
GankTank Posted November 11, 2010 Author Share Posted November 11, 2010 As others have already said. Geeze your game doing an engine conversion yourself on your first turbo vehicle! Lol you get that wen ur kiwi bud , been around rbs for a while just managed to own one thats all... Link to comment https://www.sau.com.au/forums/topic/343807-problem-after-problem/#findComment-5544700 Share on other sites More sharing options...
GankTank Posted November 11, 2010 Author Share Posted November 11, 2010 As above boost is 5psi-7psi running through factory boost solenoid. Boost gauge could also be faulty. But as you said, the loom does not seem to be matching up to ECU... Best to take pics of loom plugs and ECU and post them up. In your case though, if i were in your shoes I would be taking it to a reputable workshop. this is loom plug in and ecu from laurel at the moment Link to comment https://www.sau.com.au/forums/topic/343807-problem-after-problem/#findComment-5544730 Share on other sites More sharing options...
GankTank Posted November 11, 2010 Author Share Posted November 11, 2010 and this is your normal rb ecu. see the thickness difference, has like twice as many plug-in gaps or woteva Link to comment https://www.sau.com.au/forums/topic/343807-problem-after-problem/#findComment-5544734 Share on other sites More sharing options...
JonnoHR31 Posted November 11, 2010 Share Posted November 11, 2010 what loom are you using? Link to comment https://www.sau.com.au/forums/topic/343807-problem-after-problem/#findComment-5544742 Share on other sites More sharing options...
GankTank Posted November 12, 2010 Author Share Posted November 12, 2010 what loom are you using? prety sure if i find out wot ecu is from then i'll no what loom is. Link to comment https://www.sau.com.au/forums/topic/343807-problem-after-problem/#findComment-5546291 Share on other sites More sharing options...
luvpsi Posted November 12, 2010 Share Posted November 12, 2010 prety sure if i find out wot ecu is from then i'll no what loom is. if i was you i would save the dosh and get a aftermarket ECU with loom and wire that in you will get alot more kws and alot more for in the future DO IT ONCE DO IT RIGHT!!!!!!!!! Link to comment https://www.sau.com.au/forums/topic/343807-problem-after-problem/#findComment-5546301 Share on other sites More sharing options...
GankTank Posted November 12, 2010 Author Share Posted November 12, 2010 if i was you i would save the dosh and get a aftermarket ECU with loom and wire that in you will get alot more kws and alot more for in the future DO IT ONCE DO IT RIGHT!!!!!!!!! Oooooo when i hear aftermarket ecu i rub my hands together like i fly, Mwha hah hah Link to comment https://www.sau.com.au/forums/topic/343807-problem-after-problem/#findComment-5546386 Share on other sites More sharing options...
KiwiRS4T Posted November 13, 2010 Share Posted November 13, 2010 Hey guys,recently stumbled across this site so thawt id pick your brains, i have a c35 laurel which use to be rb20de, now gen 2 rb25det, realised that it boosting only a low 5psi so researched y so low, came to think that maybe it still had non turbo computer but cant find computer numbers anywer?!?! 23740 0v300 PCMNR 030 C1 6Y05, Anyway..... thawt id try another ecu from a friend which is a rb25det gen 2 but az i went to plug loom into det ecu noticed that connection points are way different, gona b a pain if i havto change loom.... Any suggestions? and info on ecu numbers? Cheers That ecu number is for a Series 1 C34 Stagea turbo auto with what the Skyline people would call a S2 RB25DET. What you need is an RB20 actuator for your turbo which will give you around 10 psi or just use a cheap bleed style boost controller (or an expensive electronic one if you have the means!). Link to comment https://www.sau.com.au/forums/topic/343807-problem-after-problem/#findComment-5547808 Share on other sites More sharing options...
GankTank Posted November 21, 2010 Author Share Posted November 21, 2010 That ecu number is for a Series 1 C34 Stagea turbo auto with what the Skyline people would call a S2 RB25DET. What you need is an RB20 actuator for your turbo which will give you around 10 psi or just use a cheap bleed style boost controller (or an expensive electronic one if you have the means!). Ahh k sweet az, how did you find out about ecu numbers? if i use rb20 actuator, how will the hi/low boost react? Link to comment https://www.sau.com.au/forums/topic/343807-problem-after-problem/#findComment-5559100 Share on other sites More sharing options...
KiwiRS4T Posted November 21, 2010 Share Posted November 21, 2010 There is a list of ecus on the SDU website but anyway I used to have such an ecu. You should biff the stock solenoid and either run a pipe straight to the actuator for around 10 psi or run a bleed to get more (or a proper boost controller). You can get more boost from the actuator you have by biffing (or at least by-passing) the solenoid and using the T to run a bleed to to the bov return pipe. You need to relocate the restrictor in the actuator line to the bleed line. If that doesn't give you enough boost you can progressively drill out the restrictor (bigger hole = more boost). i.e. existing line from boost pipe to T, one line to actuator other to bov return pipe. Link to comment https://www.sau.com.au/forums/topic/343807-problem-after-problem/#findComment-5559606 Share on other sites More sharing options...
STATUS Posted November 22, 2010 Share Posted November 22, 2010 this is loom plug in and ecu from laurel at the moment Same as r34 rb25 ecu. Link to comment https://www.sau.com.au/forums/topic/343807-problem-after-problem/#findComment-5560145 Share on other sites More sharing options...
KiwiRS4T Posted November 22, 2010 Share Posted November 22, 2010 Same as r34 rb25 ecu.Sadly the ecu in question is from a S1 Stagea (with the R33 engine)which looks like the R34 plug but the ecu is different in a number of respects. If it were a S2 Stagea (with the neo engine) it would indeed be very similar to the R34 ecu and would be capable of accepting a Nistune chip which the S1 cannot. Link to comment https://www.sau.com.au/forums/topic/343807-problem-after-problem/#findComment-5560536 Share on other sites More sharing options...
STATUS Posted November 22, 2010 Share Posted November 22, 2010 Sadly the ecu in question is from a S1 Stagea (with the R33 engine)which looks like the R34 plug but the ecu is different in a number of respects. If it were a S2 Stagea (with the neo engine) it would indeed be very similar to the R34 ecu and would be capable of accepting a Nistune chip which the S1 cannot. i thought a repin was all that was needed to run a r34 ecu? will have to check my notes. Link to comment https://www.sau.com.au/forums/topic/343807-problem-after-problem/#findComment-5561658 Share on other sites More sharing options...
ClutchBurndout-:( Posted November 22, 2010 Share Posted November 22, 2010 clearly it has an auto actuator spring for the wastegate, unless of course it boosts past 5psi after 4500rpm. to fix problem, get boost controller problem fixed Link to comment https://www.sau.com.au/forums/topic/343807-problem-after-problem/#findComment-5561666 Share on other sites More sharing options...
GankTank Posted November 25, 2010 Author Share Posted November 25, 2010 Sadly the ecu in question is from a S1 Stagea (with the R33 engine)which looks like the R34 plug but the ecu is different in a number of respects. If it were a S2 Stagea (with the neo engine) it would indeed be very similar to the R34 ecu and would be capable of accepting a Nistune chip which the S1 cannot. The engine in car is not neo Link to comment https://www.sau.com.au/forums/topic/343807-problem-after-problem/#findComment-5566026 Share on other sites More sharing options...
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