Hi this is my first vtec I'm normally a turbo man. My previous car was an r33 gtr which brings me on to my question. That had no problem cruising at speeds on the motorway, I understand that high speeds on the motorway is illegal and I'm not saying i do it lol but obviously a vtec kicks in at a certain rev and in my eyes wouldn't feel comfortable over 5000. Opinions?
Motorway cruising
- Thread starter jason666
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Mine engages in 6th but that might be a kpro override
Wingnuttzz
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Mines has VTEC in 6th too, I thought they all did, its just that with the speeds involved the "kick/noise increase" isn't as noticeable.
On an OEM ECU the vtec point is so high up the rev range that it should never be an issue at cruising speeds. On my tuned K-Pro ECU the vtec point is a lot lower but only on what is effectively more than half throttle so at motorway cruising its not an problem either.
On an OEM ECU the vtec point is so high up the rev range that it should never be an issue at cruising speeds. On my tuned K-Pro ECU the vtec point is a lot lower but only on what is effectively more than half throttle so at motorway cruising its not an problem either.
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Yep!
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Sent from my Z10 using Tapatalk 2
Chewy
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Could this be something to do with the 112mph top speed limiter from the factory.DC5RS said:well my maximum speed with teg was 140km/h. So not sure about 6th gear VTEC, that's what i heard
Would you even hit the 6000rpm crossover point for Vtec in 6th prior to 112mph?
Benneh
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Can confirm that VTEC does engage in 6th gear on a standard car that is delimited.
As per above though, if you're just cruising at stable speeds for any length of time you don't really want to be in VTEC. On these cars you'd have to be running an exceptionally short 6th gear and final drive as well as a very low VTEC engagement point for it to be active at motorway speeds.
As per above though, if you're just cruising at stable speeds for any length of time you don't really want to be in VTEC. On these cars you'd have to be running an exceptionally short 6th gear and final drive as well as a very low VTEC engagement point for it to be active at motorway speeds.
bezza4
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What Dave said. I did 140k miles in mine, of which 90% was probably motorway. Over 80mph the DC5 does get quite noisey cruising along, but I just turned the music up. But the DC5 handled motorway speeds without an issue and you shouldn't have to worry about vtec at all on the motorway.dave7368 said:
70mph = 3.5k revs
80mph = 4k revs
90mph = 4.5k revs
100mph = 5k revs
vtec kicks in at 120mph in 6th gear with a standard ECU.
I just feel as with a turbo car your hitting speeds of 100 lower In the Rev range and i was just curious. the only other reason I ask is I will be looking to lower my vtec engagement in the future so the revs and speeds has helped give me an idea what I can lower it to and still be comfortable on the motorway
integraleo
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If you lower VTEC to around 4-5000 it only engages when on more than 50% throttle so it won't matter.