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4b11 plus turbo problems

Posted: Mon Aug 08, 2022 4:36 am
by Kvalderama
Hi iam just finished adding a turbo on a '17 lancer gta and having some problems.

Rough idling even if i drove it for an hour to relearn the ecu, also it has a cel codes p0068 (maf, map, tps correlation) and p061a (torque monitoring). The ecu is not flashed yet. Anyone with experience could chime in. Thanks


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Re: 4b11 plus turbo problems

Posted: Mon Aug 08, 2022 8:44 am
by adamhumphrey
It sounds like the car is throwing codes due to the increased airflow for the map, maf and tps. Its most likely due to being outside the values the ecu has predefined. The two codes are related. I would get the ecu tuned and that should sort the issues.

Torque Monitoring explaination and info
http://mmc-autoelectric.org.ua/manuals/eur/lancer_sportback/2012/13/html/M113178780008700ENG.HTM

Re: 4b11 plus turbo problems

Posted: Mon Aug 08, 2022 9:57 am
by awood
And more images of the build process please.

Re: 4b11 plus turbo problems

Posted: Mon Aug 08, 2022 11:42 am
by Kvalderama
Its a custom built turbo pipings
Vf38 ball bearing turbo
Arc bov
Intercooler
Oilcooleer
Etc
Still stock on injectors and fuel pump but i have a fic injectors and a large pump.
On first start after the bukld it is ok and drove it like 30 mins but on the second till now it is running like crap specially on idle.

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Re: 4b11 plus turbo problems

Posted: Mon Aug 08, 2022 11:59 am
by Kvalderama
Here is the pic of the ecu

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Can this be reflashed?

Re: 4b11 plus turbo problems

Posted: Mon Aug 08, 2022 12:39 pm
by lancerdarryl
Left hand drive car?

Re: 4b11 plus turbo problems

Posted: Mon Aug 08, 2022 12:46 pm
by lancer2014
you have to reflash

Re: 4b11 plus turbo problems

Posted: Mon Aug 08, 2022 3:58 pm
by Kvalderama
Yes this is a left hand drive

Yup i have to study how to reflash, i am used to standalone systems where open loop tuning is straight forward

Do i have to replace map sensor? I am not planning to boost above 1 bar.. could a stock map sensor handle below 14 psi?

Re: 4b11 plus turbo problems

Posted: Tue Aug 09, 2022 1:10 am
by adamhumphrey
The stock evo x map sensor reads to 3 bar I think