Cols300

Thanks to everyone for their help. ended up with some good results today. cheers. Col

Thanks Again. Col MAP Table.pclr

Thanks for the thought though

I'm in Vic mate, Ballarat

So if I change that Axis to MAP, am I right in saying that my values in the table would no longer be accurate? my table seems to be a lot bigger than yours, is there a reason for that? Is it necessary? cheers

How do I change it to read MAP?

Great, thanks heaps for all your help. Col Thanks Ducie. Can you tell me why my DC table measures MGP and your MAP? Can you explain the difference please? Cheers. Col

Sorry to be a PITA, But I have re done both logs, the first one with no adjustments to the wastegate table and the second with + 15% across the board. And going by the gauge, it made approx. + 5PSI difference, can you confirm that with the logs? What does the before and after PSI calculate to? I have attached both logs and both base maps before and after changing the wastegate table Turbos are GT675RS with standard wastegates, using a 3 port valve. I hope im on the right track? Cheers. Col Base 1.pclr Base 2.pclr Log 1 2017-08-26 12;38;42 pm.llg Log 2 2017-08-26 12;51;49 pm.llg

Yeah it still has the original values, the lower ones. thats why I thought I'd ask if by updating the firmware, the ECU controlled the original settings differently. cheers. Col

Sorry, I could have explained myself a bit better. The map I attached was the altered one, + 15% across the board. Once I done that log run, I closed the software without saving it to the ECU, and it seemed to still be boosting well over the 20psi

Thanks Mate. Any ideas as to why is seemed to still hit higher boost after I closed the software without saving? You mentioned in an earlier post that I originally had an old version of the firmware, and there were boost control changes in the newest version, by updating to the newest version, would that have changed how the original tune controlled boost?

HI Adam. So I added the 15% into the to the wastage DC table across the board, and going by the boost gauge it most definitely went well above 20psi, maybe around 25-26 by the gauge, which I logged. Strange thing is, I didn't save the table when I closed the software, and it still boosted well over 20psi, again around 25-26. I didn't have time to open it up and do another log run though. Does the log run reflect this? Thanks Again. Col 300ZX base 24-8.pclr Log 2017-08-24 5;45;07 pm.llg

Hi Brad. I am not sure, as I haven't done that test, If I were to disconnect both hoses from the solenoid and join them together, is this going to give me this information? When you say minimum boost pressure, Minimum when? as in certain RPM or cruising? Cheers. Col

Hi Steve. Thanks for the reply. I know when he began tuning it, he was very skeptical that the lambda's were reading correctly, as one was reading a huge difference to the other, so tuned with probes in the exhaust. Fuel economy has actually never been better, haha, I had an old Wolf 3D in before the link, and now that was a glitchy ECU and couldn't keep a tune in it, and was extremely rich, but in saying that, I really do not do a lot of road K's in it, and fuel consumption is not a huge concern. I changed the oil before it was on the dyno and have done a few drag runs since, it will most definitely be getting changed once this issue is sorted and back on the dyno. I understand what your saying in regard to "are there any other tuners in my area" This guy has a great reputation, if it makes any difference, he only tuned high end, no cold start or idle or cruise etc. as we were pretty tight for time. Cheers. Col

Rodger that

I just want to confirm, is this the wategate DC table I need to adjust? So when adding the 15% its as simple as example 40 + 15% so change the number to 46? Does this need to be done to all individual cells? And sorry for all the questions, but PID's? what that? lol and do they need to be altered?

OK great, thanks. I will give that a try. Cheers. Col

Hey, Thanks again. Si I disconnected the solenoid, and yes it would boost past 20psi So I reconnected and done a log run. What I also noticed was a stutter in 2nd gear around the 20psi holding revs approx. 5500-6000? Hope I have uploaded the files correctly. Cheers. Col 300zx base.pclr Log 2017-08-22 5;50;33 pm.llg

Hi Adam. Thanks for your reply. As far as I know, yes the ECU should have been controlling the boost. When you say unplug the solenoid, do you mean take a hose off it, or disconnect it from the power source? Col

Hi All. A quick intro, I'm Col, I have a Nissan 300zx that has very slowly been built over many years. A few months back we finally got to tune it on a Dyno, and had some good results, but could not boost over 20PSI. Now for myself, I know very little about tuning, very bare essentials, the guy tuning it had only ever used a LINK G4+ on 1 other occasion and was very straight up with me about this, and admitted that though he loved it as an ECU he has never had the opportunity to learn them inside and out. Prior to it being on the dyno, a good mate of mine who helped me put the engine together, put a very basic tune in it, just so it was drivable, and we done a very small amount of road tuning to ensure it was not doing anything out of the ordinary. So I guess the question is, What have we missed, something in the background not letting it boost over 20PSI. I'm sure the tuner could spend time on it and sort it out, but that's all $$ so I thought id ask the question on here. What do you guys need to know to help push me in the right direction? Can I upload some screenshots of the tune? Like I said, I'm green to all this, so any input would be fantastic. Thanks Heaps Col