Vtec

what is the differnce between a i-vtec engine and a regular vtec engine?
i dont really get the difference still. even after reading up on the i vtec i dont know what the difference is.
They are actually both computer controlled.
The difference is the timing.
In an engine using VTEC, the computer simply changes the cam profiles between a high a low rpm range. Meaning if you are in low RPMs the valves only open sightly in order to have good gas mileage, then at high RPMs the valves open more to get more power while losing fuel efficiency.
In an engine using i-VTEC, RPM range doesnt matter. The engine has computer controlled adjustable cams on the intake side, capable of advancing and retarding the timing from 25 to 50 degrees. What this does is make the higher power cam profile engage if you are at low RPMs giving full throttle or heavy load.
So basically the i-VTEC gives the driver more power in the lower RPM range all the way through high RPMs while the VTEC only has a set VTEC engagement point.
How VTEC works
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Bio Fuel Bio Diesel Packed Column Vtec $19,900.00 |
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Mini : Classic Mini Classic Mini 1970 Austin Mini VTEC Show Car, Resto-Mod, Best You will Find! 1.8 Liter B18 $17,217.00 |
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Mini : Classic Mini B16A Vtec 1967 B16A Vtec Classic Mini Cooper ! $15,000.00 |
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Honda : Accord SE *MI:38K 07 BLUE 3.0L V6 VTEC SEDAN *SPORT SEATS *SIDE AIRBAGS *CD CHANGER *LOW MILES *FL $13,600.00 |
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Honda : Civic SI 2006 Honda Civic SI 2DR i-VTEC 6-spd 33K miles DVD/NAV $12,500.00 |
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Acura : Integra Ls/V turbo Championship white JDM front 530whp Ls/Vtec turbo $10,000.00 |
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Honda : Odyssey VTEC! V6! POWER SLIDING DOORS! 6 DISC IN-DASH CD CHANGER! CLEAN! $9,800.00 |
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MTB2 ENGINE PACKAGE HONDA VTEC B16 CLASSIC MINI COOPER $9,800.00 |
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Honda : Fit 5DR HB AUTO FIT VTEC 4CYL BLACK HATCHBACK !!WARRANTY!! FWD MPG !!WE FINANCE!! FOG LAMP 60/40 $8,995.00 |
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Honda : Accord I4 Auto EX i-VTEC, POWER SEATS, MOONROOF, CD CHANGER, CLOTH SEATS, STEERING WHEEL AUDIO $7,600.00 |
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Honda : Interceptor VFR800 Interceptor New 2009 Honda Interceptor 800 VTEC V-4 Sport Touring $7,600.00 |
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Acura : RSX Type S my blue 2004 Acura RSX type S. this car is a dream to drive ,6speed,k-20,vtec $6,500.00 |
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Honda : Interceptor VFR800 VFR 800 RC46 2006 HONDA VFR800 VFR 800 INTERCEPTOR SPORT TOURING – V4 VTEC – 50 MPG – 5K MI $5,950.00 |
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Honda : Civic jdm ek hatch b16a DOHC vtec motor buddy club f/s f/t $5,500.00 |
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Honda : CRX HF ESP.net 1990 Honda Crx 500hp 2.3L Vtec Turbo Fully Built $30K+ invested $5,300.00 |
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Honda : Civic si – vtec Custom 93 delSol, WRAP, JDM B16, TEIN, SPOON, SKUNK2, JL, DC, ALPINE, AEM, ROTA $5,001.00 |
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Pacesetter Headers 92-00 Honda Civic EX 1.6L VTEC 4-Cyl $4,999.00 |
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Acura RSX JDM K20A Type R Motor Engine 6spd Manual LSD Trans ECU Japanese Import $4,699.00 |
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02 03 04 05 HONDA CIVIC TYPE R EP3 SI 2.0L I-VTEC ENGINE LSD TRANS ECU JDM K20A $4,699.00 |
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JDM Honda Acura Integra B18C DOHC VTEC Type R Spec R Engine 98 99 00 01 $4,600.00 |
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Honda : Interceptor VFR800 Interceptor New 2008 Honda Interceptor 800 VTEC V-4 Sport Touring $4,494.00 |
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COMPLETE PACKAGE JDM ENGINE B18C-R VTEC LSD 98+ $4,450.00 |
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JDM B18C TYPE R ENGINE DC2 SPEC R VTEC MOTOR B16A B18B $4,399.00 |
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JDM 98+ HONDA INTEGRA DC2 TYPE-R COMPLETE ENGINE SWAP $4,299.99 |
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JDM HONDA CIVIC TYPE R B16B DOHC VTEC ENGINE LSD TRANS B16A B18C $4,299.00 |
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JDM Honda B18C Integra TypeR 98+ B18C5 ITR Engine VTEC $4,199.99 |
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JDM Honda B18C Engine Type R 98+ DOHC VTEC LSD B18C5 ITR Integra $4,199.99 |
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B18C TYPE R DOHC VTEC Engine 5 Speed LSD Transmission $4,180.00 |
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JDM ACURA Integra Type-R Engine 98+ spec ITR swap P73 VTEC LSD B18C5 B18C motor $4,175.00 |
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98-01 JDM B18C Type R DOHC VTEC Engine SpecR B18C5 Acura Honda Integra $4,100.00 |
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02 03 04 05 HONDA CIVIC TYPE R EP3 SI 2.0L I-VTEC ENGINE TRANS ECU JDM K20A $3,999.00 |
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JDM HONDA F20C S2000 AP1 ENGINE 6 SPEED TRANS 2.0L VTEC MOTOR CLEAN $3,999.00 |
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COMPLETE PACKAGE JDM ENGINE B18C-R VTEC LSD 96-97 $3,945.00 |
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B16B Civic TYPE R DOHC VTEC Engine 5 Speed Transmission $3,900.00 |
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94 95 HONDA INTEGRA CIVIC 1.8L DOHC VTEC OBD1 TURBO ENGINE LSD SWAP JDM B18C $3,899.00 |
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00 01 02 03 HONDA S2000 AP1 2.0L VTEC F20C ENGINE TRANSMISSION ECU JDM F20C $3,899.00 |
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JDM INTEGRA TYPE R B18C DOHC VTEC ENGINE DC2 MOTOR B16A B18B $3,899.00 |
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B18C TYPE R DOHC VTEC Engine 5 Speed LSD Transmission $3,850.00 |
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04 05 2004 2005 HONDA S2000 2.2L F22C1 VTEC Engine VIN 2 $3,800.00 |
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Honda / Acura Integra JDM B18C Type R Engine DOHC VTEC Motor, B16A,B16B $3,800.00 |
