Mapped cars - VTEC engagement rpm?


_JT

_JT

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I was wondering for all the people out there with a B-series and a remap, what is your VTEC engagement rpm? Stock it's already too high actually, but probably done for kicks casuse you feel it. Soon I will be modding my car intake and exhaust wise and after that a remap. Was wondering what I can count on. Thanks :nice:
 
remap will more than likely raise it slightly, for best gains and a smoother map, rather than for "kicks"
 
Have mine set at 5000. At first I thought it may be too low but its perfect imo. Although it isnt as violent a crossover as stock, it makes the delivery far more linear.
 
Thanks for the answers :) Hoping it will be around 5000 or even lower.

E2-SAW said:
remap will more than likely raise it slightly, for best gains and a smoother map, rather than for "kicks"
Click to expand...

Raise it even more?? The kick is because the engine makes a big step in power, I'd think it would have to go down so it connects better with the lowcamlift map?
 
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E2-SAW said:
remap will more than likely raise it slightly, for best gains and a smoother map, rather than for "kicks"
Click to expand...

Lower it you mean!

Depends on spec etc but for a b18c with bolt on's you could expect to see transition to high cam(vtec) in around 5200rpm. I mapped a stock internals b18c fitted with a genuine Hytech manifold last year and that wanted vtec at 4500 so there's no set rule as to where vtec should be. In a nut shell vtec should be set where torque on high cam exceeds low cam torque. On the dyno it's very simply to find, you basically run the car on low cam to about 6500 then do another run with vtec set low i.e 4000rpm and watch where both torque lines cross, that where the vtec point should be set.
 
My VTEC engages at 5200rpm, I think its ideal, makes it a bit easier to keep on the power if driving quickly.
 
vtec6000 said:
lower it you mean!

Depends on spec etc but for a b18c with bolt on's you could expect to see transition to high cam(vtec) in around 5200rpm. I mapped a stock internals b18c fitted with a genuine hytech manifold last year and that wanted vtec at 4500 so there's no set rule as to where vtec should be. In a nut shell vtec should be set where torque on high cam exceeds low cam torque. On the dyno it's very simply to find, you basically run the car on low cam to about 6500 then do another run with vtec set low i.e 4000rpm and watch where both torque lines cross, that where the vtec point should be set.
Click to expand...

+1000
 
mines is set at 5k and love it tbh, really an ideal place i think.
 
As vtec6000 said < will give you the best, but I been in alot of Hondas it seems to be around 5500. With basic mods , so asume must be in and around it
 
b18c here, and engages at 5200. Would prefer couple hundred lower, but that`s where it should be.
 
Vtec6000 said:
Lower it you mean!

Depends on spec etc but for a b18c with bolt on's you could expect to see transition to high cam(vtec) in around 5200rpm. I mapped a stock internals b18c fitted with a genuine Hytech manifold last year and that wanted vtec at 4500 so there's no set rule as to where vtec should be. In a nut shell vtec should be set where torque on high cam exceeds low cam torque. On the dyno it's very simply to find, you basically run the car on low cam to about 6500 then do another run with vtec set low i.e 4000rpm and watch where both torque lines cross, that where the vtec point should be set.
Click to expand...

That is what I was planning :nice: My G-Tech should come in handy here if I do a street tune :D
 
apologies. i was thinking for a built engine with likes of high comp pistons and high lift cams, and the engine revving to a higher limit as well. Not for a remapped engine with just bolt ons (i.e exhausts and intakes)

yes, lower it on OEM cams for a smoother changeover rather than said kick initially described.
 
I had my car remapped last week the vtec engagement was changed to 5500 ,

as said above a smooth crossover is better .
 
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