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AbbeyMS

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AbbeyMS last won the day on March 25

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  1. I would be throwing another fuel pump at the car. Thanks
  2. what pump are you using?, save me trawling back through the thread
  3. Had a think , voltage at the pump is low, considerable volt drop from battery to fuel pump. You have run a new wire to the fuel pump from the battery you say , was this direct or via a relay? fuel pump, remind me what make? where did you buy the pump from?
  4. do you still have the over pressure valve still plumbed into fuel system after the fuel pump and tank top? Thanks
  5. So back out with the car last week , Datalogging set up to trigger just on RPM , making sure the log pop up is turned off before pulling the USB, 10 sessions all with data. So next time I think I need to add the old datalog trigger set up and see what happens
  6. After testing I've noticed if you dont close the log download window before disconnecting the ecu USB. The ecu logging status will say hold logging for download. Upon reconnecting to the ecu the logging status displays the "hold for download" message and when trying to download a log there is nothing in the memory. To get the ecu to start logging again I have to reopen the logging download window and close it while connected to the ecu to get the logging status to say OFF then the ecu will log again.
  7. Everyone tunes a little differently , I feel 0.86 at 100kap is far to rich , these cars feel woolly when running those numbers dont spool very quickly. Totally agree the EGT's are a little worrying pretty easy to add some fuel via the open loop lambda map now the fuelling is pretty close. Just drops the numbers of the lambda/AFR to richen the car up a little and see if it does change the EGTS at all. As we all know controlling EGT is all about a combination of things.
  8. AFR/LAMBDA looks a lot closer now. Regards EGT , yes a little hot , I would say the car needs some more ignition timing in the map this will lower the EGTS as the energy for the combustion will be used more than wasted down the exhaust port. Are we happy that the timing commanded in the map is what the car is actually running, something that could be verified on a dyno under a constant rpm load with a timing light, while I think about ignition timing how did you check the trigger offset , did you add a HT lead in between the coila nd plug on cylinder 1 to attached the timing light too or did you use the loops at the back of the cylinder head? Wonder how many cars have been tuned without EGT measurement?
  9. AbbeyMS

    350z g4x plugin

    are you using the PID that Link supplied or have you tweaked the PID numbers? Looks like the throttle body been driven to hard open
  10. The multi throttle bodies on the RB , change a few things, if you map in Speed Density (RPM versus MAP) your have to have a throttle compensation map to adjust the fuelling at smaller throttle openings 1 bar boost @ 100% throttle at 4500rpm needs different fuelling than 1 bar boost @ 60% throttle at 4500rpm. Moving over to Alpha n with overlay lambda removes the need to have a throttle compensation map. 0.5bar boost will not normally be seen at full throttle , it will be seen on part throttle or transistion to a higher boost level. 50% throttle at 0.5 bar @ lambda 1.0 wont cause any issues in my opinion now seen in all the years we have been tuning RB's also makes the car have super snappy throttle response . looking at the screenshot of the log file above the map was 0.68 so was bleeding into the higher map level on the AFR layout table, log shows 13.2/13.5 not 14.7. Maybe we can see the ECU log file? This is how I work with an RB with a Link ECU on multi throttle bodies, an RB on a single throttle body doesnt need tuning on Alpha N, it is easier to tune the car on Alpha N on a dyno thou and faster as you can pick up all the map points easily Thanks The EGT's are they from running 1.0 bar boost? you can try very easily to run a richer/fatter fuelling by just adjusting the AFR layout map number , try lowing the AFR number by 0.2 , the fuelling will instant track a richer mixture by 0.2AFR without any work on the main fuel map. The RPM log looks better now it is being logged at 200HZ, so the irregularity on the RPM logs before must of been the low log frequency it was being logged at.
  11. Once you have changed the IAT sensor you can calculate the changes needed using the datalog with IAT fuel % change easily.
  12. factory position is fine, the fast responding sensors are longer reaching
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