Vtec + Turbo

[integramus]

I'm more of a NA person but today........

I have question about turbocharging a Vtec engine.

Why is it persons are afraid of turbocharging a Vtec Engine?

Is it so much harder than a non-vtec?

And is it recommended?

[vonoventwin]

Hell I'm about to turbo charge my v-tech engine with a t3/t4 turbo. Not to hard when its bolt on applications!

[FREED0MFiST]

I heard you want vtec to kick in later if you have a turbo, but im not sure if its true. If its better to run turbo on non-vtec, couldnt you just disable the vtec? or would that be a problem?

[MattyO217]

Dude, VTEC will give you MORE power with or without a turbo!

[FREED0MFiST]

then why do i hear negative things about running vtec and turbos, because you have to tune it better?

[Fireinthesky28]

The high end performance delivered by vtec sometimes gets regarded as [silly] sometimes because you are doubling your power for high rpm. Say if you tune your turbo to give good boost between something like 2-5 thousand rpm, then allow your vtec to take over at 5+, you will be at an advantage by distributing your intake modifiers for different ranges.
I have also heard rumors about losing significant gas mileage with a turbocharger, one of the big great ideas of v-technology is that you get incredible mpg. Something you might not care about as just an autocross or drag racer.

[Ajonkey]

is v-tec like nitro but u cant control when it kicks in and its not in a bottle

[Fireinthesky28]

Originally posted by Ajonkey
is v-tec like nitro but u cant control when it kicks in and its not in a bottle

vtec is nothing like nitro, it is just a timing boost for high-rev conditions, you feel a small kick, thats about it.

[Frostbyte]

Originally posted by Fireinthesky28


vtec is nothing like nitro, it is just a timing boost for high-rev conditions, you feel a small kick, thats about it.

If that you don't even really feel a kick more like a slow pull. Unless you are in a Type-R

[MattyO217]

Yo, Frostbyte,
I waz just wonderin' how u like your Unorthodox Race Pulley. Which pulley(s) do u have? How much of a difference does it make? Where u got it and how much$$ Waz considering a kit myself.

Peace,
M

[civicgsr_T4_60-1]

Originally posted by Fireinthesky28
Say if you tune your turbo to give good boost between something like 2-5 thousand rpm, then allow your vtec to take over at 5+, you will be at an advantage by distributing your intake modifiers for different ranges.
I have also heard rumors about losing significant gas mileage with a turbocharger, one of the big great ideas of v-technology is that you get incredible mpg. Something you might not care about as just an autocross or drag racer.

Damn man, are you sure you know about turbo's. First you don't tune a turbo and even if you did why the hell would you want it to stop boosting at 5k rpm. Why have a turbo that stops giving power at 5k when a gsr doesn't redline till i believe 8100rpm, just doesn't make any sense. And vtec(that's the way it's spelled) kicking in after the turbo would stop producing power is gonna give you shit power, you'll get nada. I'm sorry don't give info about stuff you don't know. Also, while in vtec, your not getting great mileage, your getting more power and your loosing mileage. Also, i never loosed mileage with my old turbo setup, but with my new setup i'm sure i'll ony see around 250miles a tank.

[FREED0MFiST]

There a link in the FAQ that has something like a 350 horsepower civic si that gets like 29 MPG.... pretty impressive.

[civicgsr_T4_60-1]

yep, as long as you don't tune your car overly rich you shouldn't see to much of a decrease in gas. Now if you drive down the highway at full throttle, you'll notice your gas gauge start to drop.

[KPAB16AEF9]

Originally posted by civicgsr_T4_60-1
yep, as long as you don't tune your car overly rich you shouldn't see to much of a decrease in gas. Now if you drive down the highway at full throttle, you'll notice your gas gauge start to drop.

Why would you tune your car to be running rich at all? Stoichmetric is where is should be and if you're tuning youre gonna lean it out as much as you can, safely. Its not about dumping fuel into your engine.

[civicgsr_T4_60-1]

I know that, but say somebody doesn't put their car on a dyno. Say they only have a vafc or safc to lean out the fuel. Well in that case, you would want your car a little rich due to the fact you can't really tell if your gonna be running too lean. A little rich means alittle more safety. Now if you put your car on a dyno, you shouldn't have a problem getting your a/f perfect.