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Joined: Dec 2002
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c2gas
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c2gas Mar 2, 7:59pm - #4595 

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2000 Toyota Celica

Joined: Dec 2002
Posts: 307
Hungary
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 Mar 2, 10:06pm - #4596 

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Posts: 185
Irvine, CA
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.
Joined: Dec 2002
Posts: 307
c2gas
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c2gas Mar 2, 10:21pm - #4597 

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2000 Toyota Celica

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Posts: 307
Hungary
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 Mar 3, 12:02pm - #4598 
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Oakland, CA
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 Mar 3, 3:12pm - #4599 

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2000 Toyota Celica

Joined: Dec 2002
Posts: 307
Hungary
So it changes continously? What controlls that? Oil pressure or the ECU?
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glitch
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glitch Mar 3, 5:48pm - #4600 
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Oakland, CA
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 Mar 3, 6:20pm - #4601 

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2000 Toyota Celica

Joined: Dec 2002
Posts: 307
Hungary
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
Senior Member
glitch Mar 4, 3:10am - #4602 
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Oakland, CA
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 Mar 5, 4:11pm - #4603 

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2000 Toyota Celica

Joined: Feb 2003
Posts: 264
Camarillo, SoCal
i did not know you could get a GT with the 6 spd trany? i thought only the GTS came with it. confused

2000 GT-S
6spd
AEM CAI
Tanabe SRM exhaust
ACT STREET MOD CLUTCH
UR FLYWHEEL
TRD SPRINGS
TANABE FR TOWER BRACE
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glitch
Senior Member
glitch Mar 5, 5:05pm - #4604 
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Oakland, CA
yeah, the european ones come with the 6spd [Mad] lucky eh ?

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clockwork
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clockwork Mar 5, 5:13pm - #4605 

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2000 Toyota Celica

Joined: Feb 2003
Posts: 264
Camarillo, SoCal
[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
6spd
AEM CAI
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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