1995LS400

I drive an LS 400 pre-98 so I dont have the VVTI engine, but I did test drive a 99, (has it for the newbs), and fell in love with it. Ive driven my friends 01' Acura CL type S with 3.2L Vtec and it seemed pretty fast as well, but it was 2 door and less weight. Im on the fence here about either one.

bitkahuna

iTrader: (20)

VTEC and VVTi are similar and both great ways to improve both fuel economy and performance, but I wouldn't decide a car on one vs. the other.

And an LS vs. an Acura CL ... well, there's no comparison.

SLegacy99

Gotta love that V-teched TSX with decent HP and no torque......not.

rominl

iTrader: (4)

i agree with paul. idea behind the two systems are similar, and i think both are great stuff. to me i can't say which one is better

Och

iTrader: (3)

Speaking of VVT-i, I believe the 2nd gen GS300 has the 2JZ-GE engine with VVT-i added? How come it didn't get a power bump from 1st gen GS300 or NA Supra?

LexFather

I believe its i-Vtec now?

I like V-tec b/c they sell more stickers and they have more funny pictures on the internet lol..

Both systems are very very good, IMO.

RX_330

Vanos is better.

gsrthomas

iTrader: (1)

I think Vtec was the first variable valve timing and lift control mechanism out at its time?

NSX started using this technology in 1990 and VVTI was introduced in 1996.

I think vtec is superior to vvti.

LexFather

Correct, NSX was the first and amazing to have that tech in 1990. However, Vtec kicks in after a certain RPM range, VVTi is continuous, thus VVTi would be better. For instance VVTi added 40/50 hp from the same 4.0 V-8 in the SC/LS in 1992.

I believe i-Vtec is now continuous so its similar to VVti thus today I don't see one having an advantage.

blacksc400

iTrader: (4)

I had an Integra GSR with B18C5 motor, the 2 step Vtec, which unlike other Honda vtec made for fuel economy, will give you a sudden bump in HP once it go after certain RPM. It was kind of exciting to drive, but after a while, I get tired of the sudden push, and its requirement of high rpm.
Whereas VVTI, it is so smooth and you don't even feel the change, which I like better, the smooth and linear feel.

blacksc400

iTrader: (4)

and I also drove I-Vtec cars, Honda made it a lot more smoother than Vtec, so now IVTEC and VVTI get more similar to each other.

But LS4 and CL??? I don't even have to choose.

GSteg

iTrader: (15)

I like VTEC for aggressive fun driving.

But for all around power, VVTi is great.

CK6Speed

iTrader: (1)

Actually, VTEC was first used in Honda motorcycles, but in the case of Honda automobiles, the first to have VTEC was actually the 88 JDM spec 1.6 Integra and/or JDM CRX.

Anyway, VTEC and VVT-i are not apples to apples. If you want to compare VVT-i to something from Honda, you have to compare it to i-VTEC, and they are still not 100% comparable. You'd have to compare i-VTEC to VVT-iL. Now those are comparable as they to virtually the same thing.

Here is my breakdown, and anyone can research it themsevels.

VTEC > VVT
VVT-i > VTEC
i-VTEC > VVT-i
VVT-iL = i-VTEC

Here is my reason. VTEC varies valve lift and duration, but not cam phasing. VVT-i does not vary valve lift, but varies cam phasing.

i-VTEC now varies cam phasing.
VVT-iL now varies cam lift.

As for how VTEC feels, it just depends on how Honda decided to tune it. On the GR-R and other Honda cars it was almost like and on off switch. You felt the transition. On the NSX, you barely felt VTEC at all. It was tuned for a much smoother transition.

mex lex

iTrader: (4)

Haha. I read that from the factory, the TSX purposely has a dip in HP right before v-tec engages to stimulate the effect of the v-tec kicking in.

LexFather

Did you have to bring up bikes. I was waiting for you to post, I agree 100% with your assesment.