my new integra type r
- Thread starter fergalb
- Start date
Dan3SGTE
Member +
thats a mean machine, love it mate.
Vtec kicking in earlier is an advantage as its power build up starts earlier on making it more drivable without having to rev the absolute nuts off it.....
Drove a 2.2 Prelude a little while ago and didnt start till 6K.. Was shit! fast when it did but so sluggish before hand. 4.7K is good.
Vtec kicking in earlier is an advantage as its power build up starts earlier on making it more drivable without having to rev the absolute nuts off it.....
Drove a 2.2 Prelude a little while ago and didnt start till 6K.. Was shit! fast when it did but so sluggish before hand. 4.7K is good.
Idrees
Banned
Awesome machines, sat in one last summer and loved every second of it! Toda cams you say? I demand videos!!
Not always an advantage though, someone I know had it set at 3500rpm and it was shit (Civic). Set it back to 5500rpm and it was just nice!
3500rpm is not good for it you wud need a propper ecu like the spoon one i have not thease stupid v tec conntrollers
sx_turbo
Lifer
nice car dude.
@idrees, was there any other mods done to that civic, or was the vtec just told to turn on earlier in the rev range?
cos vtec on hondas is like having a turbo. you cant just simply whack the vtec down and hope it does wonders, it needs the correct fuelling done aswell, and ignition etc etc.
just saying as that may well be the reason it ran "shit"
@idrees, was there any other mods done to that civic, or was the vtec just told to turn on earlier in the rev range?
cos vtec on hondas is like having a turbo. you cant just simply whack the vtec down and hope it does wonders, it needs the correct fuelling done aswell, and ignition etc etc.
just saying as that may well be the reason it ran "shit"
SaRfI
Member +
nice car mate.
what spec is she 96 or 98?
and as you mentioned you have the spoon "ecu" and vtec kicked at 4300 rpm, actually as far as i know on spoon ecu V-Tec Point 5,100`5,400 and the Rev. Limit 9,000 ,so you must have other mods to your car if she is going all the way to 9300 rpm or else the needled must be moving Quicker.:homer:
Vtec profile only works with high RPM! so lowering the vtec You will lose so much low down torque and power when you shift the vtec that low.
and lads vtec defiantly should be left as Honda sets them as few of ya stated above. or if you do want vtec to kick in earlier you must make few changes to Ignition timing and fuel mapping needs precision dyno tuning. Simply telling your ecu to engage vtec at a lower RPM without ignition and fuel system modification actually causes you to run LEAN, not RICH, thus GREATLY increasing the RISK of "detonation." No offense,
However vtec is not meant to add alot of power, it just adds top end grunt for just that little bit more to give a nicer pull, Honda manufactured vtec to be up there so that it IS NOT used on every shift.
Vtec essentially changes the duration of the lifters of intake and exhaust. Proportionally to the duration that a lifter is open on the intake/exhaust side... more flow or more air/charge more air means for fuel can be consumed, more consumed fuel means more powa!!!
what spec is she 96 or 98?
and as you mentioned you have the spoon "ecu" and vtec kicked at 4300 rpm, actually as far as i know on spoon ecu V-Tec Point 5,100`5,400 and the Rev. Limit 9,000 ,so you must have other mods to your car if she is going all the way to 9300 rpm or else the needled must be moving Quicker.:homer:
Vtec profile only works with high RPM! so lowering the vtec You will lose so much low down torque and power when you shift the vtec that low.
and lads vtec defiantly should be left as Honda sets them as few of ya stated above. or if you do want vtec to kick in earlier you must make few changes to Ignition timing and fuel mapping needs precision dyno tuning. Simply telling your ecu to engage vtec at a lower RPM without ignition and fuel system modification actually causes you to run LEAN, not RICH, thus GREATLY increasing the RISK of "detonation." No offense,
However vtec is not meant to add alot of power, it just adds top end grunt for just that little bit more to give a nicer pull, Honda manufactured vtec to be up there so that it IS NOT used on every shift.
Vtec essentially changes the duration of the lifters of intake and exhaust. Proportionally to the duration that a lifter is open on the intake/exhaust side... more flow or more air/charge more air means for fuel can be consumed, more consumed fuel means more powa!!!
h3ppy
Member +
lovely car mate, always had a soft spot for them!
i think the reason behind leavin the v tec where it is is somethin to do wit the oil? wen v tec kicks in it needs more or somethin, and lowerin it makes the v tec run without how much it needs? as you can tell by that description i dont no the ins and outs of it, but i think that has somethin to do wit it?
i think the reason behind leavin the v tec where it is is somethin to do wit the oil? wen v tec kicks in it needs more or somethin, and lowerin it makes the v tec run without how much it needs? as you can tell by that description i dont no the ins and outs of it, but i think that has somethin to do wit it?
SaRfI
Member +
i would say that Honda put vtec at 6k rpm for a reason! if you lower it all the way to 4k the car is not gonna be really breathing enough so you wouldn't get the performance gain you might think!
Gilly2006
Member +
nothing to do with vtec but the new dual vvti thats coming out thought this was a cool video!
http://www.youtube.com/watch?v=zpERYiHR0NU
http://www.youtube.com/watch?v=zpERYiHR0NU
Dan3SGTE
Member +
What i was trying to say is if tuned correctly and mapped up for the cam change over to be sooner then it wouldnt be a disadvantage as such.... Doing a modification like that to your engine is dramatic and requires precise tuning to go along with it.....
But yeah i do see your point completely... If i bought a Vtec engine the last thing i would be concidering is to reduce its lift to a lower RPM.....
Not something i would do....