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steve99 · 06-09-2019, 03:25 AM

Here is you log posted to datazap.

https://datazap.me/u/steve99/turbo?l...23-24-25-29-37

Now note that the manifold pressure max out at 1.37 bar or 0.37 bar over atmospheric. now this looks suspiciously like you still have stock MAP sensor in car or stock map sensor scaling. As its telling you max boost was only ever 5psi.

Now i think that incorrect as you engine load and hence mas air flow measured by the mas air flow sensor continues to climb

At about 3700 rpm you achieved 1.37 bar ie boost of 0.37 or 5 psi.

Now the mas air flow continues to climb as you would expect as engine rpm rises. But boost is flat.

now compare this to this avo turbo log

at say 5500 its mas air flow is about same as yours but the boost is way higher its about 0.6 bar arround 8 psi.

you keep going to 7500 mas air flows still increasing rapidly.

id say you had a problem with the MAP sensor or its stock or incorrectly scaled in tune or just not reading correctly.

Id estimate you got somewhere round 10 psi , also you got about -5 degrees knock correction over 6800 rpm.

The ebcs relies on signal from map sensor to control boost, so it would not have helped. Also over boost cuts also rely on map reading.

avo turbo log to compare

https://datazap.me/u/steve99/mark-tu...&data=4-5-9-31

check you actually have 3 bar map installed
check when you switch on car but engine off it reads 1 bar

map scaling in tune may be incorrect, would need to see tune
sensor may be faulty

what waste gate spring is in you cannot use an EBCS to lower boost under wastegate spring pressure only increase.

If its got a 7 psi spring the lowest boost is 7 psi

06-09-2019, 03:25 AM	#6
steve99 Banned Join Date: Dec 2013 Drives: FT86 Location: Australia Posts: 7,996 Thanks: 1,035 Thanked 4,992 Times in 2,983 Posts Mentioned: 598 Post(s) Tagged: 2 Thread(s)	Here is you log posted to datazap. https://datazap.me/u/steve99/turbo?l...23-24-25-29-37 Now note that the manifold pressure max out at 1.37 bar or 0.37 bar over atmospheric. now this looks suspiciously like you still have stock MAP sensor in car or stock map sensor scaling. As its telling you max boost was only ever 5psi. Now i think that incorrect as you engine load and hence mas air flow measured by the mas air flow sensor continues to climb At about 3700 rpm you achieved 1.37 bar ie boost of 0.37 or 5 psi. Now the mas air flow continues to climb as you would expect as engine rpm rises. But boost is flat. now compare this to this avo turbo log at say 5500 its mas air flow is about same as yours but the boost is way higher its about 0.6 bar arround 8 psi. you keep going to 7500 mas air flows still increasing rapidly. id say you had a problem with the MAP sensor or its stock or incorrectly scaled in tune or just not reading correctly. Id estimate you got somewhere round 10 psi , also you got about -5 degrees knock correction over 6800 rpm. The ebcs relies on signal from map sensor to control boost, so it would not have helped. Also over boost cuts also rely on map reading. avo turbo log to compare https://datazap.me/u/steve99/mark-tu...&data=4-5-9-31 check you actually have 3 bar map installed check when you switch on car but engine off it reads 1 bar map scaling in tune may be incorrect, would need to see tune sensor may be faulty what waste gate spring is in you cannot use an EBCS to lower boost under wastegate spring pressure only increase. If its got a 7 psi spring the lowest boost is 7 psi Last edited by steve99; 06-09-2019 at 03:35 AM.