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Joined: Dec 2002
Posts: 307
c2gas
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c2gas

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2000 Toyota Celica

Joined: Dec 2002
Posts: 307
Hungary
Mar 2, 12:59pm - #4595 
VVT-i setting?

Has anybody ever modified the VVT-i RPM/shift point with or without a piggy back computer? If yes, HOW?

Thanks...

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dontmesswithkram
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dontmesswithkram

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Posts: 185
Irvine, CA
Mar 2, 3:06pm - #4596 
the vvt-i shift point? i hate to be blunt, but what the heck are you talking about? vvt-i is constant, you cant change it. unless ur talking about vvtl-i then thats a different thing.


*2003 Black GT-S 6speed* TRD body kit, HID upgrade, clear corners, Matrix XRS shift knob, 02 tails, trd exhaust, AEM gen 2 CAI, TWM short shifter.
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c2gas
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c2gas

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2000 Toyota Celica

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Hungary
Mar 2, 3:21pm - #4597 
I mean The Variable Valve Timing ( if I`m correct) and not the lift. This is not constant.It`s changing the Intake cam timing in upper RPM. It works with oil pressure like the lift, and the ecu controlls the oil-switch. My prolem is that the signal wich is comming from the ecu is not just a ON/OFF signal, and couse of that my Greddy can`t controll that.

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glitch
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glitch
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Oakland, CA
Mar 3, 5:02am - #4598 
rofl dood, listen to kram... vvt-i is constant... it works throughout the powerband depending on throttle position, load, and a whole bunch of other variables. it changes the Intake cam timing throughout the band... hence the name variable valve timing.

it's the lift feature of the gts that actually has a 'shift' point.

[ 03-03-2003, 04:04 AM: Message edited by: glitch ]


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c2gas
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c2gas

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2000 Toyota Celica

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Mar 3, 8:12am - #4599 
So it changes continously? What controlls that? Oil pressure or the ECU?

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glitch
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glitch
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Oakland, CA
Mar 3, 10:48am - #4600 
i think it's both, because the timing depends on a lot of variables like going uphill, throttle position, and weather. it doesn't just rely on where you are in the rpm range. i really don't know tho frown


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c2gas
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c2gas

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2000 Toyota Celica

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Hungary
Mar 3, 11:20am - #4601 
The problem is my modifyed cams. I have good results between 1000-4700 rpm and 6500-6700 rpm.( I also have to mod my rev limiter couse it cuts ignition just when the car starts to kick).
My logic is that my custom in.cam lets too much air/fuel (with the oem VVT setting) between 4700-6500 rpm that the engine can`t burn. So I have to delay it.
Comments, suggestions?

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glitch
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glitch
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Oakland, CA
Mar 3, 8:10pm - #4602 
all i can think of is to buy an a/f ratio computer and get it proffessionally tuned to your setup. that's all i can think of.


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clockwork
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clockwork

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2000 Toyota Celica

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Camarillo, SoCal
Mar 5, 9:11am - #4603 
i did not know you could get a GT with the 6 spd trany? i thought only the GTS came with it. confused


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glitch
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glitch
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Oakland, CA
Mar 5, 10:05am - #4604 
yeah, the european ones come with the 6spd [Mad] lucky eh ?


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clockwork
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clockwork

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Mar 5, 10:13am - #4605 
[Mad] Thats it! im moving to freakin Europe!!they get the best cars, the best food,girls...uhhh...ok, i feel better cool


2000 GT-S
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Tanabe SRM exhaust
ACT STREET MOD CLUTCH
UR FLYWHEEL
TRD SPRINGS
TANABE FR TOWER BRACE
OBX SHORT SHIFTER
ENERGY SUSPENSION MOTOR MOUNTS
CF HOOD
SUPER STOCK STEREO SYSTEM WITH BUDS TK421 MODIFICATION
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