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Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB (https://www.ft86club.com/forums/index.php)
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-   -   Car jerking hard at WOT (https://www.ft86club.com/forums/showthread.php?t=128257)

bryan.catano93 06-12-2018 09:26 AM
Car jerking hard at WOT
 
i just installed my JDL turbo kit. car starts and drives. yesterday i received my first revision and went to take a WOT log but the car jerks very hard past 4k rpm. ( what i think its boost cut ). i went and checked all the lines and they seem okay to me. theres 2 logs attached, one is regular driving and the other one is my attempt to WOT. could someone please take a look at my logs and maybe try to help me out.

thanks



Mods: JDL turbo kit, base journal bearing turbo, recirc nameless catless overpipe/frontpipe combo, trd catback.

bryan.catano93 06-12-2018 09:37 AM
i cant upload the. csv file from the datalog. i can email them

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secho 06-12-2018 10:27 AM
Quote:
Originally Posted by bryan.catano93 (Post 3097859)
i cant upload the. csv file from the datalog. i can email them

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Hi, upload it to the datazap.me and post the link.

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bryan.catano93 06-12-2018 11:09 AM
Quote:
Originally Posted by secho (Post 3097876)
Hi, upload it to the datazap.me and post the link.

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https://datazap.me/u/bryancatano93/l...og=0&data=7-19


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sid94 06-12-2018 11:33 AM
Mine would do the same after 4K but my problem was that I was tuning for 10psi but had 20psi spring in the wastegate lol


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secho 06-12-2018 11:42 AM
Quote:
Originally Posted by bryan.catano93 (Post 3097893)
https://datazap.me/u/bryancatano93/l...og=0&data=7-19


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Without seeing the tune it is hard to decide. It might be boost cut, load limits, incorrecty set load axis and calculation (seems it fuelcuts above 2g/s of load). But at krást, you should fix fueling first. Fuel trims Are highly out of reasonable limits. Also flkc goes almost -5degs. Not So good.

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bryan.catano93 06-12-2018 11:47 AM
Quote:
Originally Posted by secho (Post 3097905)
Without seeing the tune it is hard to decide. It might be boost cut, load limits, incorrecty set load axis and calculation (seems it fuelcuts above 2g/s of load). But at krást, you should fix fueling first. Fuel trims Are highly out of reasonable limits. Also flkc goes almost -5degs. Not So good.

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anywhere i should start checking? would thr fuel trims be out of spec due go boost leak?

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bryan.catano93 06-12-2018 12:31 PM
i bought the kit used and saw that it has a recirc kit option from the wastegate. i didnt mention that to my tuner. would that have ajlnything to do with my issue?

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secho 06-12-2018 01:40 PM
Quote:
Originally Posted by bryan.catano93 (Post 3097924)
i bought the kit used and saw that it has a recirc kit option from the wastegate. i didnt mention that to my tuner. would that have ajlnything to do with my issue?

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It might be an issue. But you have to consult with your tuner. Do you have the tuning file in decoded/open form? Can you read it in the ProEcu?

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Kodename47 06-12-2018 05:12 PM
I would say that looks like boost cut, probably on an early revision tune to make sure everything is OK.

Irace86.2.0 06-12-2018 05:35 PM
You have the JDL 3bar map sensor, right?

bryan.catano93 06-12-2018 05:38 PM
Quote:
Originally Posted by secho (Post 3097955)
It might be an issue. But you have to consult with your tuner. Do you have the tuning file in decoded/open form? Can you read it in the ProEcu?

Odesláno z mého SM-G950F pomocí Tapatalk
im not sure if i do. yeah i talked to my tuner, hes out of town for the week tho so i kinda wanna do some. digging on my own

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bryan.catano93 06-12-2018 05:39 PM
Quote:
Originally Posted by Irace86.2.0 (Post 3098094)
You have the JDL 3bar map sensor, right?
4 bar map from jdl yes.

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bryan.catano93 06-12-2018 05:40 PM
Quote:
Originally Posted by Kodename47 (Post 3098077)
I would say that looks like boost cut, probably on an early revision tune to make sure everything is OK.
yeah its the first revision after the basemap. what could be causing the boost cut?

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