2JZMKIV Posted February 9, 2015 Share Posted February 9, 2015 I want to get to the point as fast as i can, 1996 TT 6MT BPU I've been told that my car is tuned for japanese 100 octane because it had sard analyse ecu, in my country (Cyprus) we only have 98RON I bought an AEM INFINITY -8 with p&p harness from telematica, apart from having future modification plans i needed this ecu so we could solve this problem permanently. Now the question is how can you tell this car will run on 100 or 98 or 97 RON how can i possibly know that ? how do you set which gasoline octane your car will run on is it based on ignition timing ? VE ? AFR ? Boost ? Quote Link to comment Share on other sites More sharing options...
mellonman Posted February 9, 2015 Share Posted February 9, 2015 you have to put in the lower rating fuel and map to it , but surely your tuner would know that ? Or i take it your doing it your self ? Quote Link to comment Share on other sites More sharing options...
Alex Posted February 9, 2015 Share Posted February 9, 2015 The aggressiveness of the timing and boost levels is usually what people define as the precursors to needing higher octane fuel. Many cars come from Japan "mapped for 100 Octane" when it simply isn't true. So A) I wouldn't panic and B) I'd check the boost levels are no more than BPU recommendations. For B) the answer is to not exceed 1.2bar on stock turbos. Most ECU's have knock/detonation detection and they will adapt the timing to avoid it on the fly. So, if the ECU is knocking back the timing and you keep the boost to a sensible level you can run 98Octane just fine. Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted February 9, 2015 Share Posted February 9, 2015 As above, Japanese fuel ratings have always been a point of contention anyway, while the ECU you have may have a more aggressive timing, I would also suspect that the rather rich fuelling has been retained to some degree for extra safety. Quote Link to comment Share on other sites More sharing options...
2JZMKIV Posted February 10, 2015 Author Share Posted February 10, 2015 you have to put in the lower rating fuel and map to it , but surely your tuner would know that ? Or i take it your doing it your self ? I just had to know how this works because if you are living in Northern Cyprus you have every right to be paranoid about almost everything its a shitty place when it comes to supra's believe it or not in the northern side theres only around 15 toyota supra 9-10 of them registered as road cars rest registered as race cars. The aggressiveness of the timing and boost levels is usually what people define as the precursors to needing higher octane fuel. Many cars come from Japan "mapped for 100 Octane" when it simply isn't true. So A) I wouldn't panic and B) I'd check the boost levels are no more than BPU recommendations. For B) the answer is to not exceed 1.2bar on stock turbos. Most ECU's have knock/detonation detection and they will adapt the timing to avoid it on the fly. So, if the ECU is knocking back the timing and you keep the boost to a sensible level you can run 98Octane just fine. Thanks a lot this was great information max boost is set 1.00 bar i think that sounds pretty safe right ? As above, Japanese fuel ratings have always been a point of contention anyway, while the ECU you have may have a more aggressive timing, I would also suspect that the rather rich fuelling has been retained to some degree for extra safety. Thank you. Quote Link to comment Share on other sites More sharing options...
Alex Posted February 10, 2015 Share Posted February 10, 2015 (edited) very safe @1bar...all things working as expected. Probably the best thing to do is stick it on a rolling road/dyno and have the AFR's checked throughout the rev range. A 5th gear pull is 1:1 so gives a good indication of actual power. The guy on the dyno can monitor for Knock/detonation too. The AEM you've bought is excellent kit and a worthy item to install in the future should you choose to change many engine items but it's not necessary today. Edited February 10, 2015 by Alex (see edit history) Quote Link to comment Share on other sites More sharing options...
2JZMKIV Posted February 11, 2015 Author Share Posted February 11, 2015 very safe @1bar...all things working as expected. Probably the best thing to do is stick it on a rolling road/dyno and have the AFR's checked throughout the rev range. A 5th gear pull is 1:1 so gives a good indication of actual power. The guy on the dyno can monitor for Knock/detonation too. The AEM you've bought is excellent kit and a worthy item to install in the future should you choose to change many engine items but it's not necessary today. thanks for the advice. off topic but i see you have s1000rr my cousin has one as well deadly they are deadly i have heard some crazy stories about those, back to the topic i'm slowly getting all the parts together so it wont be long until my car is single turbo. Quote Link to comment Share on other sites More sharing options...
Alex Posted February 11, 2015 Share Posted February 11, 2015 The S1000RR 2012+ (facelift) is far from deadly...assuming you can actually use self control. She's actually quite tame about town. I do know that the original model was a bit less stable on the front end, A guy I know of bought one and swapped back to a GSX-R cause he felt the 2010 spec S1000RR was a bit too loose. But, I do think a lot of that is down to how you ride them. The road is too limited to really open them up. On track it's a hoot - and knowing the electronics are there as a safety net enables you to really explore limits. I'd speak to Ryan of 2bartuning ([email protected] or co.uk) when you're ready to map that AEM Infinity. Quote Link to comment Share on other sites More sharing options...
Gpro Posted February 11, 2015 Share Posted February 11, 2015 The S1000RR 2012+ (facelift) is far from deadly...assuming you can actually use self control. She's actually quite tame about town. I do know that the original model was a bit less stable on the front end, A guy I know of bought one and swapped back to a GSX-R cause he felt the 2010 spec S1000RR was a bit too loose. But, I do think a lot of that is down to how you ride them. The road is too limited to really open them up. On track it's a hoot - and knowing the electronics are there as a safety net enables you to really explore limits. I'd speak to Ryan of 2bartuning ([email protected] or co.uk) when you're ready to map that AEM Infinity. I don't think ryan maps anything apart from syvecs nowadays Quote Link to comment Share on other sites More sharing options...
Jellybean Posted February 12, 2015 Share Posted February 12, 2015 I have a sard analyse ecu in my BPU Supra , have the car about 8 years now, running 1.2 bar on 95 octane fuel AFR's are all good No issues in 8 years Quote Link to comment Share on other sites More sharing options...
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