Tom's r32 gtr Posted August 3, 2020 Report Share Posted August 3, 2020 attached is a copy of my current tune and a log i attempted to record. can i get some eyes on it and possible guidance on what needs to be adjusted to get me on the road to a tuner. tom 8.2.20.pclr log 3.llg Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 3, 2020 Report Share Posted August 3, 2020 It looks like the throttle position sensor hasnt been calibrated. Throttle stop may first need to be closed a little to bring idle down a bit so do that first. I would probably bump the master fuel up to 6 also since it goes very lean above 2000RPM - it will then be a bit on the rich side at idle but it will likely run happier. Your fuel pressure cal looks wrong, input value B would usually be 4.5V for a MLH. Your flex fuel sensor isnt working. Quote Link to comment Share on other sites More sharing options...
Tom's r32 gtr Posted August 3, 2020 Author Report Share Posted August 3, 2020 Should I calibrate the throttle position sensor from where it’s sitting right now or with the adjustment screw all the way out throttle all the way closed? I have adjusted the screw to where the car will idle any lower and it wants to die.. From your side of things can you see why my flex fuel sensor is not working? Quote Link to comment Share on other sites More sharing options...
Tom's r32 gtr Posted August 4, 2020 Author Report Share Posted August 4, 2020 so ive adjusted the settings in cal 4 for fuel pressure, but cant figure out the flex fuel sensor, its wired correctly but wont register anything... also should i set my idle adjustment screw to fully closed and then calibrate tps or get the car to idle and then calibrate? tom 8.2.20.pclr Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 4, 2020 Report Share Posted August 4, 2020 2 hours ago, Tom's r32 gtr said: also should i set my idle adjustment screw to fully closed and then calibrate tps or get the car to idle and then calibrate? Get it set so it idles first, then do the TPS cal. You want the TPS to read zero at idle. 2 hours ago, Tom's r32 gtr said: but cant figure out the flex fuel sensor, its wired correctly but wont register anything... Your settings are correct but the log shows no signal from the flex sensor. Either the wiring is wrong or the sensor is faulty. Is your wiring like so?: Quote Link to comment Share on other sites More sharing options...
Tom's r32 gtr Posted August 4, 2020 Author Report Share Posted August 4, 2020 i checked my wiring for the flex fuel sensor and its wired correctly. on the off chance its not, im going to swap the vout and vcc wires and see if it comes on. should i expect it to work without the car running key ON only? Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 4, 2020 Report Share Posted August 4, 2020 With ignition on, engine not running, go to the runtimes screen, Digital tab. DI 6 will be green and show active when there is a signal coming from the flex sensor. Quote Link to comment Share on other sites More sharing options...
Tom's r32 gtr Posted August 5, 2020 Author Report Share Posted August 5, 2020 so i checked resistance on the sensor and got nothing so im going to try a new sensor. Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 5, 2020 Report Share Posted August 5, 2020 Im not sure if I would expect there to be any resistance with a solidstate sensor like this. Another thing you can do to test your wiring is change DI6 to GP input, pull-up resistor on. Then with sensor unplugged DI 6 should show active, and if you short the Gnd/signal pins together at the flex plug then DI6 should show off. Quote Link to comment Share on other sites More sharing options...
Tom's r32 gtr Posted August 5, 2020 Author Report Share Posted August 5, 2020 i just tried this and when shorted it turns off.... smh Quote Link to comment Share on other sites More sharing options...
Tom's r32 gtr Posted August 5, 2020 Author Report Share Posted August 5, 2020 not to switch topics but should my referance timing be set to 10 or 20? ive adjusted my cas to 20 with a timing light and ht lead.... and my trigger offset is at -87? does this sound right? Quote Link to comment Share on other sites More sharing options...
Tom's r32 gtr Posted August 8, 2020 Author Report Share Posted August 8, 2020 so my flex fuel sensor was bad. ive replaced it and this one now reads ACTIVE but not a actual percentage... ive switched to a thicker oil to cope with the 110 degree weather here in AZ in hopes to raise my oil pressure a little... that has seemed to work. i also suspect that my oil temp sensor is bad. but judging off the oil pressure id say temp is probably fine. also this thing WILL NOT stay running at a decent rpm. do i need to mess with any fuel tables or ign tables to get it to calm down? ive attached my most recent log and tune. it was taken after it had reached operating temp with the help of my working the throttle to keep it running .... i let it die and then started it back up within the same log.... i think... let me know if im doing this right.... thank you for all your help! r32 gtr rb26 g4+ e85 radium fpr with built in pulse damper 1300 id inj. gm flex fuel sensor r35 coils stock cam angle sensor single throttle body single turbo link can lambda link 3 port boost solenoid internal map sensor log 5.llg tom 8.2.20.pclr Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 8, 2020 Report Share Posted August 8, 2020 Mostly looks ok. It looks like the throttle may be a little too closed now, adjust that until it idles at a suitable RPM. Have you checked base timing? Flex sensor is working and showing 53% in this log. Quote Link to comment Share on other sites More sharing options...
Tom's r32 gtr Posted August 8, 2020 Author Report Share Posted August 8, 2020 I’ve set base time to 20 using a ht lead on cylinder #1 and put 20 in the timing reference section in pc link.. is that how that’s supposed to be done? Originally the timing reference in pc link was set to 10... as soon as it attempts to drop below 1k rpm it just dies. Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 8, 2020 Report Share Posted August 8, 2020 9 hours ago, Tom's r32 gtr said: I’ve set base time to 20 using a ht lead on cylinder #1 and put 20 in the timing reference section in pc link.. is that how that’s supposed to be done? Originally the timing reference in pc link was set to 10... as soon as it attempts to drop below 1k rpm it just dies. Yes, sounds like youve got it right. the timing reference you can choose any number you like - usually to match whatever timing marks you have on the front cover. Some engines for instance only have a TDC and 10BTDC mark so you would use 10 in this case. Quote Link to comment Share on other sites More sharing options...
Tom's r32 gtr Posted August 10, 2020 Author Report Share Posted August 10, 2020 So this is what I’ve done, I’ve set my cam angle sensor to where the bolts are directly centered in the slots my timing at that point was way off using my timing light. I adjusted the offset to -58 that brought my timing to 20° with the timing light and cas center on the bracket. I’m sort of confused though because everything that I’ve seen says RB offset should be somewhere around -80 to default -87 Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 11, 2020 Report Share Posted August 11, 2020 They normally are close to -85, but if that offset gives you the correct timing then that is what is important. Does it have after market cams? Do the cams look like they are timing correctly? Quote Link to comment Share on other sites More sharing options...
Tom's r32 gtr Posted August 11, 2020 Author Report Share Posted August 11, 2020 my cams are aftermarket greddy 264 in and ex .... ive readjusted my offset to -70 and it seems to be happy... ill attach a log to confirm... how do i go about dropping the rpm to 1000 or under? running log 2.llg running log.llg Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 12, 2020 Report Share Posted August 12, 2020 8 hours ago, Tom's r32 gtr said: how do i go about dropping the rpm to 1000 or under? You will have to close the throttle some more. Quote Link to comment Share on other sites More sharing options...
Tom's r32 gtr Posted August 12, 2020 Author Report Share Posted August 12, 2020 while closing the throttle, will i need to adjust anything else to compensate? Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 12, 2020 Report Share Posted August 12, 2020 You will need to re calibrate the TP Sensor but only do that once you have it turned off. Quote Link to comment Share on other sites More sharing options...
Tom's r32 gtr Posted August 12, 2020 Author Report Share Posted August 12, 2020 so if im understanding this correctly, i should be able to close up the throttle a tiny bit, do a tp cal and thatll drop the throttle? is it really that easy? lol Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 13, 2020 Report Share Posted August 13, 2020 Most likely, adjust the throttle stop to see if it idles happily at lower RPM, it may need the idle cells in the fuel map adjusted if not. Once you have the throttle in a position where it idles at an RPM you are happy with then lock up the screw, shut it down and do a TP cal. Quote Link to comment Share on other sites More sharing options...
Tom's r32 gtr Posted August 13, 2020 Author Report Share Posted August 13, 2020 Do you think reinstalling my iacv would help any? I don’t have pwr str, ac, heater, or even headlights tbh lol Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 13, 2020 Report Share Posted August 13, 2020 2 hours ago, Tom's r32 gtr said: Do you think reinstalling my iacv would help any? It will allow you to have fast idle for warm up but you should be able to achieve an acceptable warm idle without it. Quote Link to comment Share on other sites More sharing options...
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