Earliest VTEC can come on

[tekkin_DC2]

This question has probably been asked a thousand times... but what is the lowest rpm that vtec can be engaged on a NA VTiR honda Integra ? and what is the best computer to use for it ?.

[wynode]

Do you mean what is the lowest RPM at which VTEC will engage on a stock car?

[T-onedc2]

This question has probably been asked a thousand times... but what is the lowest rpm that vtec can be engaged on a NA VTiR honda Integra ? and what is the best computer to use for it ?.
If the engine is stock there's not need to alter it, has been optimised from the factory. If modified for more power with bigger cams then it could be beneficial but wouldn't be set any earlier in the rev range.

[spoondc2]

If you are talking about the earliest vtec crossover point in all stock honda car, that will be integra vti-r which is 4400rpm, but if you are talking about the lowest point that a vtec can activate, it should be 3000rpm..... but you will wreck the vtec valve i think. Just get a VAFC and have a try, you will get beaten by any non-vtec honda's

[amurray]

i was reading the manual on my dads 04 jazz, and it says VTEC kicks in fully before 3000 rpm, so i dont no if it would be the same for your car

[wynode]

Where is this thread going tekkin_DC2?

Be SPECIFIC in your question so we can give you a propper answer.

[ProECU]

This question has probably been asked a thousand times... but what is the lowest rpm that vtec can be engaged on a NA VTiR honda Integra ? and what is the best computer to use for it ?.

earliest is around 3500rpm. standard comouter can do it

[FunkyR]

mine is 3100....

[BlueSiR]

i set mine 2000 be4 i can hear da vtec acturally kicks in, but it was me acciendly set it to 2000 lolz

[fly_vti]

Do you mean what is the lowest RPM at which VTEC will engage on a stock car?

about 3500 or 4k :p

[tekkin_DC2]

I thought the question was quite obviess.. and some ppl answered it thanks fly vti and Proecu... and the question implied that there will be an aftermarket ecu installed, And if were talking SPECIFIC'S then ( i think... and Honda jazz's..( No Offence ) should be left out of the thread... i cant tune a car on estimations.

[fly_vti]

I thought the question was quite obviess.. and some ppl answered it thanks fly vti and Proecu... and the question implied that there will be an aftermarket ecu installed, And if were talking SPECIFIC'S then ( i think... and Honda jazz's..( No Offence ) should be left out of the thread... i cant tune a car on estimations.


'HEY dude, no need to be smart ;) were only helping. as for the 'BEST ECU' you can find many related topics on this using the 'Search' button, its a common subject eg: hondata ecu. as for vtec engagment points, earliest i know is 4k rpm.

[tekkin_DC2]

Whatever.... you totally missed the point... again.. i didnt even ask what "the best" ecu was.. and for the "search" explaination.. thanks captain obviess.

[ProECU]

just wanted to add, there is no point having vtec x-over this early.
In fact, oil pressure is probably not high enough for a SAFE transition.

The only reason to ever do this is when tuning, and even then its usually around 4k

[Q_ball]

wtf man,
vtec aint like boost...
u cant jst engage it earlier and have more power dude
if ur engine is stock, leave it as is

[pgclee]

5200Rpm...not lower...

[tinkerbell]

just wanted to add, there is no point having vtec x-over this early.
In fact, oil pressure is probably not high enough for a SAFE transition.


exactly what i was about to say.

the ONLY 'safe' point to allow VTEC to engage is where you have sufficent oil pressure i.e >~60psi

if you engine makes >60PSI at 1500rpm, it is 'safe' to engage it there...

[tinkerbell]

5200Rpm...not lower...

get real,

my old B20VTEC was set to engage at 4300rpm...

by Jim at Croydon...

EDIT: sorry, but that was in a 1983 Prelude, not a Integra VTiR

[filoaccord]

ring hondawreck at gold coast they have one brand new 2500 bucks

i was reading the manual on my dads 04 jazz, and it says VTEC kicks in fully before 3000 rpm, so i dont no if it would be the same for your car

[jdmlvn]

1st stage 3.5k rpm