k20z3 turbo suddenly lean only in 5th gear

K-Series Programmable ECU installation questions / support issues
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deafy
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k20z3 turbo suddenly lean only in 5th gear

Post by deafy » Wed Jul 01, 2015 11:09 pm

Had a chance to test and tune the car tonight, working on getting the boost controller settings properly set up. The setup is a stock k20z3 with pt6262 @19psi dynotuned by slowmotion. At all our prior test and tune nights, we have never encountered this weird issue. At the top of 5th gear around 7500 rpm, it suddenly goes lean like its a fuel cut. And this is just short of the finish line. Pulls through past 8k rpm in every other gear no problem. Managed to get a few datalogs showing the dips in rpm and lean spike. Here are the datalogs and the calibration.
Attachments
ksight.kal
(160.99 KiB) Downloaded 61 times
ksight datalog 3.kdl
(896.84 KiB) Downloaded 66 times
ksight datalog 2.kdl
(538.09 KiB) Downloaded 54 times
ksight datalog 1.kdl
(523.35 KiB) Downloaded 58 times
1997 Prelude - under the knife.
2000 Insight - k20z3 swap, pt6262, e85. 508whp@19psi.

deafy
Posts: 191
Joined: Mon Jul 10, 2006 6:22 pm
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Re: k20z3 turbo suddenly lean only in 5th gear

Post by deafy » Thu Jul 02, 2015 4:36 pm

I've looked all over this thing. It seems it only started doing this after the latest software update. Based off my s300 experience, I've checked for rev limiter per gear and speed limiter, was not able to find anything of the like. Would really like to get this resolved by tomorrow evening for the races.
1997 Prelude - under the knife.
2000 Insight - k20z3 swap, pt6262, e85. 508whp@19psi.

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Spunkster
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Re: k20z3 turbo suddenly lean only in 5th gear

Post by Spunkster » Thu Jul 02, 2015 4:46 pm

I have tried to look the calibration and datalogs but every time it crashes the software. I have asked our software guys to take a look at it.

deafy
Posts: 191
Joined: Mon Jul 10, 2006 6:22 pm
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Re: k20z3 turbo suddenly lean only in 5th gear

Post by deafy » Thu Jul 02, 2015 5:09 pm

That's odd. I've ran these files on 3 separate computers with no issues. All of them are up to date as well.
1997 Prelude - under the knife.
2000 Insight - k20z3 swap, pt6262, e85. 508whp@19psi.

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