Which ECU for a dual VVT engine
Discussion
I'm looking to fit a dual VVT V6 engine into a project & wondered if anyone has any recommendations for which aftermarket ECU's can really control the dual VVT technology.
The engine also has a FBW.
I realise that any number of ECU's will run the engine but not all run the VVT to its full potential.
Thanks in advance
The engine also has a FBW.
I realise that any number of ECU's will run the engine but not all run the VVT to its full potential.
Thanks in advance
What engine specifically would help. Is it continuously phased VVT or an older single "switch" type VVT? What are the cam and crank patterns? What control strategy will you be wishing to run for the VVT and is this purely a performance installation or do you need to also meet the same MOT emissions requirements as the donor vehicle?
Dalesman 71 said:
I'm looking to fit a dual VVT V6 engine into a project & wondered if anyone has any recommendations for which aftermarket ECU's can really control the dual VVT technology.
The engine also has a FBW.
I realise that any number of ECU's will run the engine but not all run the VVT to its full potential.
Thanks in advance
Any chance of being more specific about the engine ?The engine also has a FBW.
I realise that any number of ECU's will run the engine but not all run the VVT to its full potential.
Thanks in advance
Syvecs S8 will do it all with a single box.
I assume by Dual VVT mean fully variable intake and exhaust cam position on two seperate banks? ie the requirement to measure 4 cam positions and control 4 actuators?
(I assume we are not talking about cam torque actuated phasers (and all the control complexity that goes with them) btw?)
(I assume we are not talking about cam torque actuated phasers (and all the control complexity that goes with them) btw?)
Dalesman 71 said:
Sorry wasn't trying to be too secretive...
Toyota 2gr-fe 3.5litre as per the Lotus Evora
There will be only a small handful, if even that, that will be able to do that all with a single box.Toyota 2gr-fe 3.5litre as per the Lotus Evora
ie, there are probably quite a few that can do it ok, but wont be able to handle DBW without an extra box.
Give Paul at Zen Performance a shout, he'll be able to sort something out for you.
Although any ecu that will do it all, and do it well wont come cheap.
The Syvecs will open up a world of traction control and other features too though.
Pectel SQ6 is a sensible option as that's what Lotus ran on the GT4 and GT3 cars.... does mean dealing with Cosworth though and all the pain that entails. Older Motec hundred series stuff doesn't have enough IO but the newer Mag stuff does and is proving very capable, no easy solution yet though. GEMS EM96 is probably a decent shout and has enough IO to do it but plenty of GEMS'isms to deal with. Life F88 is pretty much SQ6 with different software. Probably worth having a word with Simon Hill at Specialists as well who is ex Lotus and has kit that will run it.
Trigger patterns are pretty simple, it's port injection and it's very conventional hydraulically acutated VVT. Do bear in mind though the capability to carry out the box configuration quickly to support the sensor and actuator packs is far more important than the name on the box!
Trigger patterns are pretty simple, it's port injection and it's very conventional hydraulically acutated VVT. Do bear in mind though the capability to carry out the box configuration quickly to support the sensor and actuator packs is far more important than the name on the box!
poppopbangbang said:
Pectel SQ6 is a sensible option as that's what Lotus ran on the GT4 and GT3 cars.... does mean dealing with Cosworth though and all the pain that entails.
Pain indeed.Worth knowing that there are a few independent guys around that can program that Pectel ECU for a GT4 pretty effectively. If you decide to go for that option and would like a number then drop me a PM.
Also, there were some terrible engine loom quality issues initially, I can't remember if the looms were done by Lotus originally or Lotus took it over from Cosworth, but I think it's the latter and they ended up being reasonably good at the end.
Finally, during fitment I'd recommend running an earth lead back to the battery, on our GT4's we started having odd issues that were tracked back to the earth degrading as the current only runs through the rivets in the chassis.
Jack_and_MLE said:
No disrespect to Emerald, but it would fall into the MS category as far as this thread goes.In no shape or form would it be capable of running the engine as is. ie with full VVT operation, DBW and all the bells and whistles it has too.
Dalesman 71 said:
Thanks for all the input so far guys.
Can I ask about 1 more option? DTA S80 pro?
Is this capable or not, I know a guy who has used it on a Nissan 3.5 but am not sure to the full extent
of its usage.
DTA can do a dual VVT at most I'm sure. ie 2 inlet cams only.Can I ask about 1 more option? DTA S80 pro?
Is this capable or not, I know a guy who has used it on a Nissan 3.5 but am not sure to the full extent
of its usage.
I think it can do 2 independent cam controls, not sure to what extent it can then monitor any cam position though
DTA can not do DBW either. Although they do have an external controller.
Ive had a DTA on my car for over 10 years, Ive had the S80 Pro for about 6 years. It is good budget ecu. But I doubt it is the best option for your needs.
If you are prepared to chuck a manual throttle onto the engine, then maybe it could work.
But I dont think you have clarified the exact VVT needs yet ? Is it 2 inlet cams only, or 2 inlet and 2 exhaust ?
By all means email Allan at DTA to see if it can run the engine and cams though.
I think there is a guy selling a used DTA S80 over on the DTA forum, and also another user selling the DBW throttle controller.
If there's a preconfigured option, take it!
If you can live without exhaust VVT (most only serve as a minor EGR role in a passenger car engine) The DTA S80 + STC Controller can do it for £1000 less than the SQ6 (assuming it also doesn't come with harnesses), but be warned: if you're new to standalones and you want to configure the cam timing as Toyota intended, that's when you find out just how secretive and / or unhelpful the motor industry can be.
If you can live without exhaust VVT (most only serve as a minor EGR role in a passenger car engine) The DTA S80 + STC Controller can do it for £1000 less than the SQ6 (assuming it also doesn't come with harnesses), but be warned: if you're new to standalones and you want to configure the cam timing as Toyota intended, that's when you find out just how secretive and / or unhelpful the motor industry can be.
SuperchargedVR6 said:
If there's a preconfigured option, take it!
If you can live without exhaust VVT (most only serve as a minor EGR role in a passenger car engine) The DTA S80 + STC Controller can do it for £1000 less than the SQ6 (assuming it also doesn't come with harnesses), but be warned: if you're new to standalones and you want to configure the cam timing as Toyota intended, that's when you find out just how secretive and / or unhelpful the motor industry can be.
S80 would not have the ability to control all cams properly as far as I know.If you can live without exhaust VVT (most only serve as a minor EGR role in a passenger car engine) The DTA S80 + STC Controller can do it for £1000 less than the SQ6 (assuming it also doesn't come with harnesses), but be warned: if you're new to standalones and you want to configure the cam timing as Toyota intended, that's when you find out just how secretive and / or unhelpful the motor industry can be.
Gassing Station | Engines & Drivetrain | Top of Page | What's New | My Stuff