Here is my question what would happen if i unplug the wire to goes to the VVti soleinoid on the 2GS300?
Will that deleted the VVTi funstion? Will the car start?
Will the car run just likeif it didn't have a VVTI?
Thanks.

 

It will run, if I remember correctly it just runs at a fixed timing point (valve timing (overlap), not ignition of course). You will most likely get a check engine light for the Vvti solenoid though. There really isn't any reason to disconnect it, it alters the overlap to give maximum power through out the rpm range. If you are turbo and looking for more power through cam adjustments your best bet is to pick up a set of Brian Crower Cams for around $600.

If you are heart set on getting rid of vvti you can machine a set of GTE cams. Once you machine the cams they will work in a vvti head, from there you just run a standard cam gear like you would in a non-vvti setup. All the setups I have done that used that setup ran standalone's so I can't comment on the check engine situation. If you are going to go that route you should have full engine control anyways to optimize ignition timing etc.. as the airflow curve of the engine will be much different than what the stock ecu is setup for.

 

Well here is the thing i am using the GE VVTi head on my 95SC300 on AEM EMS and i like to delete the Distributor and go coil on plugs using the the VVTi coils and ignitor.
I wanted to use the VVti head because i won't have to drill and weld the bung for the cam sensor on the cylinder head.
I was told if i wanna use the VVTi cams then the solenoid has to be functional , and i would love to keep the VVTI but now i can't find any info on how to wire the VVTi solenoid into the AEM EMS.
Thanks Bro for the input

 

Yea, you can't control Vvti with an AEM as it's not just an on off switch like Vtec. If you really want to run Vvti you can run an FCon V-Pro and it will give you full Vvti control.

Honestly in your situation I would get a set of non-vvti cams and just machine them. It's not a big deal to do, Mo at SRT in Beltsville can do it for you or if you are a DIY guy you can just measure them out and take them to Burtonsville Machine. If you go that route don't forget to pick up a set of cam gears. FWIW a vvti exhaust cam gear is the same as a non-vvti cam (intake and exhaust are the same) gear so it should be easy to find one.

Also, Vvti coil on plug is a 3 coil setup. If you are running AEM then you should run 6 coils, no reason to only run 3 coils if you don't have to. The AEM is capable of controlling 6 coils so I would take advantage of it and have a better spark so you can run a little bigger gap.

 

You can control VVTi with an AEM EMS standalone. I'm doing it right now on my car. It's the AEM FIC piggyback that can't do it. Also most of the EMS out there only have 5 coil drivers so for a 6cyl you can only use 3 of them at once in waste spark setup. The new EMS v2 for a Supra can do 6 independent coils and 12 independent injectors. I don't know why the hell you would do a VVTi delete. The only reason why I can think of is if your tuner is lazy to tune the vvti or lacks knowledge of the system. It boosts the torque and response of the engine significantly and also reduces turbo lag significantly as well.

 

I really don't wanna delete it but my car never came with the VVTi and i have to hard wire the VVti into the EMS which i can't find info on that that is the reason why im thinking about deleting it.
I am go with wasted spark will am using the VVti coils i won't need any Ignition Amplifier like the HKS DLI, couple guys a running the VVTi coils on the Na-T set up up to 849rwhp W/O any Ignition Amplifier.

 

Wiring the VVTi to the EMS is extremely easy. Negative(output) of VVTi solenoid goes to one of the PWM drivers on the EMS. The positive side of the VVTi solenoid goes to ignition switched 12V. The rest is just tuning in the EMS software. There is no good reason to delete VVTi. It just comes down to laziness or incompetence. I'm not to be harsh, but the VVTi is a foward progress in technology and it increases engine VE so there should never be a good reason to remove it.

The only good reason is if you're running some montrous numbers over 1000-1200hp+ and the VVTi cams are not big enough. BC only makes their VVTi cams up to 272 duration. The 272 are work fine up to around 800-1000hp range.

Running an ignition amp is up to you. I have a HKS DLI on my car. It allows you to open up the gap on the spark plugs wider. It allows for better fuel ignition because the gap is larger. You get better idle and daily drivability. Yes it's possible to run without an amp, but you have to gap the plugs down like hell and the car will stumble/misfire slightly at lower rpms.

 

Thanks for the Help Jeff i knew you would come thru haha thanks.

I will try to mess with it this week and see what happen i will keep you posted thanks .

"Mac7919" am talking to Mo to get the some cams machine and he will be tuning my car once it's done thanks for the input Sir.

 

In his case I was suggesting Vvti delete due to simplicity and his setup. If you got Vvti to work properly on an AEM then thats good, from everything I've seen/heard, including the last time I talked to AEM there was no support for Vvti control with their system. Last time I spoke with AEM they explicitly stated that the their ems did not control Vvti, I find it hard to believe that they would turn away that market if it was as easy to hook up and properly control as just doing a couple wires. But, I'm not an AEM expert by any means so maybe things have changed, I personally am not a fan of AEM EMS's systems so I haven't spent much time digging into them.

As far as the coils go, you can run 3 coils and it will work, I wasn't saying it won't run but if you are driving the car on the street it is nice to have plenty of spark instead of just getting by. Individual coils will let you run a larger gap on your plugs which will make for a better street driving experience, smoother idle etc.....I'm not running a standalone on my personal car ( I have the Vvti coil setup) and under higher boost levels I needed to close the gap on the plugs, and that's using a DLI. If you have the capability to run individual coils why wouldn't you?

P.s- If you are going to Mo for tuning you should talk to him about doing a Haltech, extremely reliable (we all know the history AEM has for faulty units)and the price is still reasonable. At least check out what he has to say on them, Mo is excellent with Haltech's (and I believe a distributor) which is nice if you ever need support locally.

 

I called AEM last week told the samething " We did not make it for the VVTI" 93-97 Only!!
I went AEM because 80% of the people making good power are on AEM, not saying that it's the only one that's avalaible or better or anything ... but alot people knows how to tune it and the dealers are all over the places.
I wanted Haltech Also but $2600 i will buy a corolla and get out of the Boosted world, and it's not PNP you have to rewire the whole car, which i hate and it doesn't use the factory sensors so ....

Mo doesn't install AEM but if you bring your and the unit is already installed on the car he will tune it.
I dragged my feet on the perfect Deal by the time i chech out the pics the box was already sold that was the E6x.

 

The 93-97 EMS does not support VVTi because those engines never came with it. However if you hook up those 2 pins to the VVTi solenoid to the AEM then it will run the solenoid. There's a setting in the menu to run variable camshaft timing. The ems can actually drive 2 separate VVTi banks.

 

anyone know the part number for the VVTi solenoid for a 2002 GS300? Tried to fnd it on Sewell's but no luck

 

I am sure the part number is on here somewhere .

I don't know the part number sorry!

 

Valve assy, camshaft timing oil control
15330-46010