Rev limit at Vtec

s300 and SManager software questions & answers
BicBoySam
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Joined: Wed Nov 15, 2023 9:42 pm

Rev limit at Vtec

Post by BicBoySam »

I installed a turbo kit on my GSR swapped EK hatch and now when VTEC tries to engage I hit a rev limit.

Fuel is rich enough, and timing is accurate,
I have tripple checked all of my grounds
Replaced, plugs and dizzy,
Spark plugs are resistor based
Tested VTEC solenoid with 12v source to verify it clicks
Verified wire continuity between s300 and VTEC solenoid
Oil pressure is above 70 when near VTEC rpm
No CELs
VTEC spool and pressure switch are disabled

Car has no other issues besides this one

Any help would be greatly appreciated

Thank you
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Spunkster
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Re: Rev limit at Vtec

Post by Spunkster »

Post pictures of the grounds in your engine bay.
BicBoySam
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Re: Rev limit at Vtec

Post by BicBoySam »

As Requested here are my grounds.
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Spunkster
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Re: Rev limit at Vtec

Post by Spunkster »

I don't see a ground from the chassis to the valve cover stud.
BicBoySam
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Re: Rev limit at Vtec

Post by BicBoySam »

Sorry I forgot to include that one, but it is present, I have attached an additional picture of my engine bay where you can see it.
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DaX
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Re: Rev limit at Vtec

Post by DaX »

The valve cover ground is incorrect. It should go under the acorn nut that holds the valve cover down to the head. Where it is currently attached, it is not providing a ground path, as the valve cover is electrically insulated from the cylinder head.
BicBoySam
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Re: Rev limit at Vtec

Post by BicBoySam »

I moved the Ground as suggested and am still having the same issue,
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Spunkster
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Re: Rev limit at Vtec

Post by Spunkster »

Are you using resistor or non-resistor type spark plugs?
BicBoySam
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Re: Rev limit at Vtec

Post by BicBoySam »

Resistor style
BicBoySam
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Re: Rev limit at Vtec

Post by BicBoySam »

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Spunkster
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Re: Rev limit at Vtec

Post by Spunkster »

Post a picture showing the complete inside of the ECU.
BicBoySam
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Re: Rev limit at Vtec

Post by BicBoySam »

As Requested
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Spunkster
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Re: Rev limit at Vtec

Post by Spunkster »

Did VTEC ever work using this ECU?
BicBoySam
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Re: Rev limit at Vtec

Post by BicBoySam »

Yes When it was NA it was able to hit VTEC with no issues
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Spunkster
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Re: Rev limit at Vtec

Post by Spunkster »

According to the datalog it is not hitting a rev limit. Post the calibration that the datalog was made with.
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