Vvtl-i - Toyota Celicas

Loco_Coco_Bo · 09-09-2012, 07:06 PM

So i was just driving today and i saw that my vvtli doesnt engage until like a little under 6k rpm. So i was wondering if there was a way to make the vvtl-i engage sooner?

I think that would pretty snazzy lol

VTEC_YO · 09-09-2012, 10:51 PM

Yeah, buy a turbo. lol. But I think you'd have to go in and mess with the ECU. I may be wrong but I think it would be hard and expensive... IF it's possible. It's perfect where it is!

INFAMOUS_GT · 09-10-2012, 04:38 PM

Yeah, Lift doesn't engage until about 6200 rpms. and the only proven way to adjust that reliably is via the PowerFC standalone ecu.

Skunkiiee · 09-10-2012, 04:45 PM

Quote:

Originally Posted by Loco_Coco_Bo

So i was just driving today and i saw that my vvtli doesnt engage until like a little under 6k rpm. So i was wondering if there was a way to make the vvtl-i engage sooner?

I think that would pretty snazzy lol

u can try "chipping" the car

Loco_Coco_Bo · 09-10-2012, 05:16 PM

Quote:

Originally Posted by INFAMOUS_GT

Yeah, Lift doesn't engage until about 6200 rpms. and the only proven way to adjust that reliably is via the PowerFC standalone ecu.

How much would the ecu cost?

Snowfork · 09-10-2012, 06:07 PM

A new ecu that is programmed to engage it lower in the power band.
i.e. You need a standalone ECU with a VTEC controller.

marcusher · 09-11-2012, 01:17 AM

pfc piggy back runs around 1K then tuning, ive seen at least a 20 hp gain from it, and you can adjust the Lift engagement to whatever you want, just dont go past 8600 cut off, oil starvation

2000celicagtmg · 09-11-2012, 06:53 PM

Theres a shop in Kirkland Washington that specializes in Ecu work, they go in and reprogram it to meet the individual cars needs unlocking a lot of power that Toyota couldnt because of mass production issues. If they can do it I am sure there must be shops just about every where that will do the same.

Snowfork · 09-12-2012, 02:40 AM

A stock ECU can only be flashed one time and that usually permanently scars it.
They just program an aftermarket one and sell that to you.

Jasonhughes2009 · 09-12-2012, 05:02 AM

it only kicks in at higher RPMS because it is needed in order to achieve the higher rpms. modified valve timing was designed to increase performance in small displacement engines because other countries have an insane tax on displacement size, hence design a system that can spin the crank faster, but keep the same displacement. you really dont want it to activate sooner, you'll notice no power gain (if not a loss in power)

think about what your vehicle was designed for and how it was designed, then consider how much money goes into developing the systems for the vehicle and how many trial and error runs there were, and then base your decision off that, it could end up being a very expensive "oops" for you, or it could end up making virtually no difference to your vehicle

just my .02

09-09-2012, 07:06 PM	#1 (permalink)
Loco_Coco_Bo Fanatic Join Date: Apr 2012 Posts: 56	Vvtl-i So i was just driving today and i saw that my vvtli doesnt engage until like a little under 6k rpm. So i was wondering if there was a way to make the vvtl-i engage sooner? I think that would pretty snazzy lol

09-11-2012, 06:53 PM	#8 (permalink)
2000celicagtmg Guru Join Date: Aug 2011 Location: Hyrum Utah Posts: 525	Theres a shop in Kirkland Washington that specializes in Ecu work, they go in and reprogram it to meet the individual cars needs unlocking a lot of power that Toyota couldnt because of mass production issues. If they can do it I am sure there must be shops just about every where that will do the same.

09-12-2012, 05:02 AM	#10 (permalink)
Jasonhughes2009 Guru Join Date: Aug 2012 Location: Sacramento, Commiefornia Posts: 143	it only kicks in at higher RPMS because it is needed in order to achieve the higher rpms. modified valve timing was designed to increase performance in small displacement engines because other countries have an insane tax on displacement size, hence design a system that can spin the crank faster, but keep the same displacement. you really dont want it to activate sooner, you'll notice no power gain (if not a loss in power) think about what your vehicle was designed for and how it was designed, then consider how much money goes into developing the systems for the vehicle and how many trial and error runs there were, and then base your decision off that, it could end up being a very expensive "oops" for you, or it could end up making virtually no difference to your vehicle just my .02

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