upper & lower vtec??

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7thGenLucifer
Posts: 19
Joined: Sun Aug 08, 2021 5:20 pm

upper & lower vtec??

Post by 7thGenLucifer »

So I'm looking for a little clarity.

What is upper and lower vtec? I'm familiar with Flashpro only has one vtec window adjustment.
I have seen that there isn't an adjustment for the intake manifold runner. I'm wondering if it's labeled wrong or what I'm I missing?
KTuner
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Re: upper & lower vtec??

Post by KTuner »

Searching VTEC in our help section would reveal: http://ktuner.com/KTunerHelp/vtec_engagement_window.htm
7thGenLucifer
Posts: 19
Joined: Sun Aug 08, 2021 5:20 pm

Re: upper & lower vtec??

Post by 7thGenLucifer »

I've read that and so have the other techs in the shop. Please keep in mind that we're all legit advanced Honda techs at the dealership. I have 21 years alone working on Honda's. I really just want to nail this down 100% so I understand the in and outs of the Ktuner. So one of the guys uses Flash for his TL and he immediately asked where's the upper and lower engagement window? There's only one type of Vtec engagement and in his tuner, it only has one window for adjustment. He also has adjustments for his intake manifold runner. My guess was that's the lower adjustment window in reference.
KTuner
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Re: upper & lower vtec??

Post by KTuner »

If you check out the link it explains what the window does and even has examples right in the text. If you then click just above it in the Help List on the VTEC item you'll see both settings are indeed for VTEC, based on that window. Both sets of parameters are in main parameters.

http://ktuner.com/KTunerHelp/vtec.htm

No, VTEC settings are not settings related to intake butterflies.
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