Rev limit when vtec pops

s300 and SManager software questions & answers
Post Reply
LsvturboDa
Posts: 10
Joined: Fri Dec 11, 2020 11:15 am

Rev limit when vtec pops

Post by LsvturboDa »

Lsvtec turbo da pulls all the way threw when vtec is not engaged but once vtec is engaged it hit some sort of rev limiter/breakup. Vtec is set at 5500 rpm
User avatar
Spunkster
Site Admin
Posts: 22745
Joined: Fri Sep 20, 2002 5:06 pm
Location: Hondata

Re: Rev limit when vtec pops

Post by Spunkster »

More than likely your grounds in the engine bay are not correct and it is grounding through the VTEC solenoid. Pay special attention to the thermostat housing ground.
LsvturboDa
Posts: 10
Joined: Fri Dec 11, 2020 11:15 am

Re: Rev limit when vtec pops

Post by LsvturboDa »

Update everything works correctly with stock map sensor..
LsvturboDa
Posts: 10
Joined: Fri Dec 11, 2020 11:15 am

Re: Rev limit when vtec pops

Post by LsvturboDa »

Am running a skunk2 4 bar map sensor but for some reason will not pop vtec with it installed.
User avatar
Spunkster
Site Admin
Posts: 22745
Joined: Fri Sep 20, 2002 5:06 pm
Location: Hondata

Re: Rev limit when vtec pops

Post by Spunkster »

Post the calibration and a datalog showing the issue.
LsvturboDa
Posts: 10
Joined: Fri Dec 11, 2020 11:15 am

Re: Rev limit when vtec pops

Post by LsvturboDa »

vtec breakup.s3d
(442.06 KiB) Downloaded 64 times
DA.New.Setup.V2.Rev7.skl
(51.49 KiB) Downloaded 57 times
User avatar
Spunkster
Site Admin
Posts: 22745
Joined: Fri Sep 20, 2002 5:06 pm
Location: Hondata

Re: Rev limit when vtec pops

Post by Spunkster »

There are no rev limits, boost cuts, or ignition cuts in the datalog. There is some other cause other than the ECU.

Are you using resistor or non-resistor type spark plugs?
LsvturboDa
Posts: 10
Joined: Fri Dec 11, 2020 11:15 am

Re: Rev limit when vtec pops

Post by LsvturboDa »

Ngk 4554 gapped to 15 thousands
LsvturboDa
Posts: 10
Joined: Fri Dec 11, 2020 11:15 am

Re: Rev limit when vtec pops

Post by LsvturboDa »

If it was something mechanical why would it work with the stock map sensor ?
User avatar
Spunkster
Site Admin
Posts: 22745
Joined: Fri Sep 20, 2002 5:06 pm
Location: Hondata

Re: Rev limit when vtec pops

Post by Spunkster »

Those are non-resistor plugs and should not be used. You must use Resistor type plugs.
LsvturboDa
Posts: 10
Joined: Fri Dec 11, 2020 11:15 am

Re: Rev limit when vtec pops

Post by LsvturboDa »

Which plugs work best it is a lsvtec on 20 psi?
LsvturboDa
Posts: 10
Joined: Fri Dec 11, 2020 11:15 am

Re: Rev limit when vtec pops

Post by LsvturboDa »

Still doesn’t make sense why everything works with stock map sensor ? I would think if it was a spark plug issue it would do it regardless of what map sensor I use.
User avatar
Spunkster
Site Admin
Posts: 22745
Joined: Fri Sep 20, 2002 5:06 pm
Location: Hondata

Re: Rev limit when vtec pops

Post by Spunkster »

Post Reply