Which turbo suits my need best????

[drift]

a properly tuned and sized turbo for your application will make power as low as 1500rpm.

T3/04 hybrid turbos are NOT properly sized for their current application with 1.6-1.8 litre motors. something slightly smaller would be preferable to reduce rotational mass, thus overcoming lag.

in addition, a regulator on the wastegate will also increase spool up times by preventing the wastegate from opening early.

[LjasonL]

yes actually i have driven a turbocharged car, and if u can rev it up ahead of time then its great, but when u just stomp it off guard. or drop gears out of nowhere and go, like happens on the street a lot, nothing really happens for a few moments. im not saying theres anything wrong with a turbo, im just saying that when it comes to off throttle to sudden acceleration moments, a supercharger will be much better for the situation. i have driven in many an autocross, and lemme tell u the turbo cars get their asses kicked in the tighter courses every time, because the na and supercharged cars have instant power out of the corners and the turbos have to wait to spool. i know youre thinking "just heel-toe it and u wont have as much lag right" well that is true but doing that is much more complicated then simply letting off the gas when u need to hit the brakes, and a car that is easier to drive is easier to drive fast, and a car that is easier to drive fast will be able to be pushed harder before the driver meets his limits. not to mention turbo lag can be a scary thing in a front wheel drive car, like having a second torque-steer, u hit the gas, torque-steer halfway into the other lane, then suddenly BOOST and lots more torque steer. i dont speak from reading magazines i speak from actual racing experiance, both street, dragstrip, and autocross. a turbo small enough to spool very quickly, or an expensive ball bearing turbo would be a great choice, but u have to pick the right one. in a dragstrip or stoplight scenario the turbo will work as good if not better than anything else, but in off throttle or road racing its not the best choice. it all depends on the type off driving u do, neither one is absolutely better than the other.

[pvang31019]

I didn't bother to read your whole post, but from the first couple of words, I doubt you have driven a turbocharged car.

1. boost is built when the engine senses load...so revving the motor before you start moving would be pointless...

2. when you downshift, you are putting the engine under load, thus creating boost...

3. bring any vortech chared honda to St. Paul, MN and I can show you what a properly tuned turbocharged ls/vtec(in a CRX) can do...

I'm not trying to hate on you or vortech, but I'm just expressing my OPINION that trbos make power more effiecient than any supercharger...

[LjasonL]

i agree that turbos make power more efficiently than a supercharger, all im saying is that a turbo takes a moment to spool while a supercharger doesnt. yes boost is built when an engine is under load, but while the turbos boost is being built, the superchargers boost is ALREADY built. its compressor is ALREADY spinning at the speed it needs to in order to put forth the power it is regulated at, while the turbo must wait for its wheel to spin fast enough to put forth this much air. a turbo is a much better option as far as tuning goes, as there are no belts pulleys to change, but the fact is a supercharger gives a faster throttle response.

[pvang31019]

ok, ok...debate over!!! I think we should both keep ourselves out of this and let the original poster decide waht is best for his car...

[LjasonL]

alright agreed, internet-arguing is pretty dumb anyway .