[jaymax]

Hi peeps,

My N20 is with FBO, list as per below.

Current Mods:
ER FMIC,ER Charge pipe, ER TIC pipe.ER catless DP, 3 inch mid pipes, 3 inch resonator, AWE axle back, Injen intake, GFB DV+, JB4 Map 6

Recently added my FF and EWG connectors and starting setting my map 6 parameters. Have tried various settings but i still have throttle closure, this is the best logging parameter and graph that i have to date. From upping boost, playing with PID, Duty bias and FOL. Throttle closure is causing me sleepless nights and I cant seem to resolve it.

Please help me provide some suggestions on my I can smoothen out my throttle closure.

[BunkerJ]

Overboosting possibly or a boost leak?

[dargorbr]

Throttle closure is overboost, try lowering FF/Wastegate Adaptation values

[jaymax]

tried to upload logs in csv but unable to do so

[jaymax]

Originally Posted by BunkerJ

Overboosting possibly or a boost leak?

over boosting and not boost leak

[jaymax]

Originally Posted by dargorbr

Throttle closure is overboost, try lowering FF/Wastegate Adaptation values

tried its already at 50 but still i get alot of throttle closure, also tried to use duty bias as well without much success

[dargorbr]

Originally Posted by jaymax

tried its already at 50 but still i get alot of throttle closure, also tried to use duty bias as well without much success

reset duty bias to 0 on all values

post a log of the throttle closure

throttle on our engines control boost, so up to 30% closure is relatively normal

[jaymax]

Originally Posted by dargorbr

reset duty bias to 0 on all values

post a log of the throttle closure

throttle on our engines control boost, so up to 30% closure is relatively normal

how do i post a log here? any ideas?

[BunkerJ]

Originally Posted by jaymax

how do i post a log here? any ideas?

JB4 lets you export the log and share via DataZap

[dargorbr]

Originally Posted by jaymax

how do i post a log here? any ideas?

you can change the extension to pdf or something like that or put it on pastebin

[jaymax]

https://datazap.me/u/jasonowk/log-15...log=0&data=1-4

These 2 logs are from my dyno run, map 2 was about 263whp while map 6 was around 277whp. but as you can see, i was way over boosting at 28psi vs map 2 25psi.

Since then i have played around with trying to reduce over boost to ensure that target is close to boost and PWM is close to FF. every time i increase boost, my throttle closure worsens and the graphs in jagged with constant closure. Playing with Duty bias doesn't really help other than bringing boost and target closure. PID increase or decrease doesn't help much as well.

Is throttle closure something minor that many live with and common somewhat. I have spent many hours playing around with the setting but unable to get a nice throttle curve above 22psi boost which is really low. If this is the case I high as well stick to Map 2 coz it hits 25psi and render by FF and EWG add-ons useless.

What are your thoughts, really appreciate some suggestions.

[BunkerJ]

Originally Posted by jaymax

https://datazap.me/u/jasonowk/log-15...log=0&data=1-4

These 2 logs are from my dyno run, map 2 was about 263whp while map 6 was around 277whp. but as you can see, i was way over boosting at 28psi vs map 2 25psi.

Since then i have played around with trying to reduce over boost to ensure that target is close to boost and PWM is close to FF. every time i increase boost, my throttle closure worsens and the graphs in jagged with constant closure. Playing with Duty bias doesn't really help other than bringing boost and target closure. PID increase or decrease doesn't help much as well.

Is throttle closure something minor that many live with and common somewhat. I have spent many hours playing around with the setting but unable to get a nice throttle curve above 22psi boost which is really low. If this is the case I high as well stick to Map 2 coz it hits 25psi and render by FF and EWG add-ons useless.

What are your thoughts, really appreciate some suggestions.

Wait, are you on stock turbo? If so, anything above 24 is dangerous for that thing... If you are, I would only push about 23psi max. I started killing my turbo at 23psi even.

[dargorbr]

Originally Posted by jaymax

https://datazap.me/u/jasonowk/log-15...log=0&data=1-4

These 2 logs are from my dyno run, map 2 was about 263whp while map 6 was around 277whp. but as you can see, i was way over boosting at 28psi vs map 2 25psi.

Since then i have played around with trying to reduce over boost to ensure that target is close to boost and PWM is close to FF. every time i increase boost, my throttle closure worsens and the graphs in jagged with constant closure. Playing with Duty bias doesn't really help other than bringing boost and target closure. PID increase or decrease doesn't help much as well.

Is throttle closure something minor that many live with and common somewhat. I have spent many hours playing around with the setting but unable to get a nice throttle curve above 22psi boost which is really low. If this is the case I high as well stick to Map 2 coz it hits 25psi and render by FF and EWG add-ons useless.

What are your thoughts, really appreciate some suggestions.

share a print of your settings so we can examine it better

[Three20i]

Dude... if your turbo is stock and you’re hitting 28psi, you’re really setting yourself up for a massive problem. 23psi is the ceiling for boost on stock turbo.

[jaymax]

yeah i was overboosting due to increase duty bias on map6, 28psi at 4800rpm on stock turbo Ron100. Surely a disaster waiting to happen but funny that no detonation, AFR was smooth and no kick back to map 4 safety map.

anyhow after noticing the overboost, I have detuned it since to around 23-24psi, just that I'm having throttle closure which according to BMS is common for N20 running without a back end flash. and doesnt hurt the power and performance, so i'm now focused on slowly upping the boost and see how it runs. btw my map2 runs up to 25psi as well, so i'm trying to keep my boost setting around 23-24psi so be on the safer side of things.

[BunkerJ]

Originally Posted by jaymax

yeah i was overboosting due to increase duty bias on map6, 28psi at 4800rpm on stock turbo Ron100. Surely a disaster waiting to happen but funny that no detonation, AFR was smooth and no kick back to map 4 safety map.

anyhow after noticing the overboost, I have detuned it since to around 23-24psi, just that I'm having throttle closure which according to BMS is common for N20 running without a back end flash. and doesnt hurt the power and performance, so i'm now focused on slowly upping the boost and see how it runs. btw my map2 runs up to 25psi as well, so i'm trying to keep my boost setting around 23-24psi so be on the safer side of things.

Yeah, even 23-24psi can be pushing. I killed my turbo on 23psi. Seals started to go, so I replaced it before they blew.

[Mike@N54Tuning.com]

The boost reading isn't accurate as N20 PWG should have TMAP = 0. The TMAP = 1 setting was only added for EWG firmware (majority of N20 cars).

Mike

[jaymax]

Originally Posted by BunkerJ

Yeah, even 23-24psi can be pushing. I killed my turbo on 23psi. Seals started to go, so I replaced it before they blew.

good infor, will keep it around 22 to 23psi then. i recently had to top up engine oil around 800ml over the 5k tt i have travelled. what symptoms did u have to note the seals were going? thanks mate

[jaymax]

Originally Posted by Mike@N54Tuning.com

The boost reading isn't accurate as N20 PWG should have TMAP = 0. The TMAP = 1 setting was only added for EWG firmware (majority of N20 cars).

Mike

mine is EWG so its set to 1 as default

[BunkerJ]

Originally Posted by jaymax

good infor, will keep it around 22 to 23psi then. i recently had to top up engine oil around 800ml over the 5k tt i have travelled. what symptoms did u have to note the seals were going? thanks mate

Noticed smoke coming out of the turbo when I put in the DV+ and was revving it. Seals were starting to go, so we went and replaced it with a bigger turbo. I had about 136K KM at that time and ran 23PSI for about 24K KM.

[jaymax]

Originally Posted by BunkerJ

Noticed smoke coming out of the turbo when I put in the DV+ and was revving it. Seals were starting to go, so we went and replaced it with a bigger turbo. I had about 136K KM at that time and ran 23PSI for about 24K KM.

smoke out of turbo, u serious mate? if the seal are gone, u would need to replace them something like a top block overhaul. Replacing the turbo wont help with the seals unless u r refering to the turbo seals. There are some who report valve seal replacement and the symptom of losing engine oil and having to top.

[BunkerJ]

Originally Posted by jaymax

smoke out of turbo, u serious mate? if the seal are gone, u would need to replace them something like a top block overhaul. Replacing the turbo wont help with the seals unless u r refering to the turbo seals. There are some who report valve seal replacement and the symptom of losing engine oil and having to top.

Considering we are on the topic of the turbos, one would easily infer that I'm referencing turbo seals. So yes, I was referencing the turbo seals.