BrockR Posted September 20, 2022 Report Share Posted September 20, 2022 Hi all, i have a 1993 R33 GTST manual with an rb25det I'm completely new to tuning however i am a mechanic by trade Have the preloaded map for the r33 and have the 360 octo selected Lock ignition timing 10° Adjust offest set 0 Delay set to 10 milliseconds I'm having an issue with trigger calibration, ecu doesn't seem to be sending a spark Ive tested my timing light and know its fine Pulled the coil and plug and confirmed its definatley not sparking. Any idea on where to go from here? Ive read the help section and the instruction booklet the ecu comes with but i seem to be at a loss for why theres no spark Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 20, 2022 Report Share Posted September 20, 2022 Give us a short log of it cranking and a copy of your tune. Is it a blue plug ecu? Trigger offset is usually around -85 for most RB's. Jarsky 1 Quote Link to comment Share on other sites More sharing options...
BrockR Posted September 20, 2022 Author Report Share Posted September 20, 2022 No problems, how would i go about capturing and sending a log and tune? Yes it is a blue plug ecu I'll have to send it all off tomorrow, not at the car anymore and the battery is now on charge Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 20, 2022 Report Share Posted September 20, 2022 Follow this guide. https://youtu.be/_P1LRANeO4A BrockR 1 Quote Link to comment Share on other sites More sharing options...
BrockR Posted September 21, 2022 Author Report Share Posted September 21, 2022 Hi Adam, here are the files as requested. Cheers, Brock. PC Datalog - 2022-09-21 12;52;24 pm.llgx R33 Base.pclx Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 21, 2022 Report Share Posted September 21, 2022 Ok it is not happy with the trigger. Can you do me a quick trigger scope. To do this, connect PC Link to ecu, go to >ecu controls>trigger scope. start cranking and hit the capture button while the engine is cranking (not before), keep cranking for say 3 seconds. Hit the save button on the triggerscope and attach that file here. Quote Link to comment Share on other sites More sharing options...
BrockR Posted September 21, 2022 Author Report Share Posted September 21, 2022 TriggerScopeLog.llgx Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 21, 2022 Report Share Posted September 21, 2022 Ah ok, I see the problem. It looks like yours has the R34 type pinout with trig 1 and 2 signals swapped. So, you are going to have to open up the ecu case, and change these dip switches to the R34GTR position. Quote Link to comment Share on other sites More sharing options...
BrockR Posted September 21, 2022 Author Report Share Posted September 21, 2022 That's brilliant, getting a spark confirmed by the timing light! I must've glanced over that part and didn't read it properly. Cheers Adam, appreciate the help mate. Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 21, 2022 Report Share Posted September 21, 2022 Try the offset around -85. Quote Link to comment Share on other sites More sharing options...
BrockR Posted September 21, 2022 Author Report Share Posted September 21, 2022 I've changed the offset to -85 Engine now runs briefly but very poorly before stalling I assume ignition timing needs adjustment and fuel mixture to set a bit richer? Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 21, 2022 Report Share Posted September 21, 2022 Yep, I would say mostly fuel. Increase the master fuel. Quote Link to comment Share on other sites More sharing options...
Jarsky Posted August 6, 2023 Report Share Posted August 6, 2023 On 9/20/2022 at 5:23 PM, Adamw said: Give us a short log of it cranking and a copy of your tune. Is it a blue plug ecu? Trigger offset is usually around -85 for most RB's. Thank you so much for this. Old thread, but I have a 1997 GTS25t (RB25DET S2). Mine wouldn't start on the base map. It appears the R33 GTS basemap doesnt include an offset. I set it to -85 and it fired up straight away. It still had no power when throttle was applied. The Master fuel on the base map is 7ms. Set that to 11ms with the stock injectors, and its now able to rev and running well enough to get it to the tuners to do the rest. Quote Link to comment Share on other sites More sharing options...
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