Tacoma - OVTUNE - VFTUNER - Update Info and Original Development

In for 2nd gen tuning

 

I'd think running lean might burn the piston or valves.... to much ignition timing might beat the snot out of the rod bearings...... then all the effects that changing transmission shifting characteristics etc etc...... What could go wrong?

 

I'd imagine not much will go wrong - OV clearly isn't just getting started in the business - but as for what could go wrong? Who cares? I'm sure OV will cover anything Toyota won't.

 

Have you ever had a tune before on any vehicle? It seems to me you haven't with this statement.

 

i was just thinking exactly the same thing.

 

How aggressive of a base map do you actually think OV will create? Of course all the above can be issues that occur with tuning, but it is all in regards to how aggressive the tune is. I am highly doubtful anything OV releases is going to border on maximum power.

 

Yes, but not while under warranty.

 

It's all "off road" use and 100% liability of what happens to your engine/drivetrain is on you. The only thing the tuning company (or dyno tuner if you're getting a dyno tune) would be if they messed up your ECU or tuned it incorrectly and they would just have to re-do it.

 

I get it. It was sarcasm.

 

OV's ability wasn't in question. The question was "what could go wrong without FI."

 

I agree with what others have said here: while a high performance tune using premium octane would be nice (I'd use it for the fun of it) a tune that enhances the general drive-ability of the Tacoma using 87 octane would be something that I could use on a daily basis and be willing to pay for. An increase of low end power and a reprogramming of the transmission logic using 87 octane would be a game changer and could generate a windfall for OVTune.

I am in the camp of "I knew what I was buying when I bought it", but making things better with a small investment is not something I'm going to pass up given the chance!

 

I agree. Better drivability is what I'm after. Any additional power gains are just a bonus.

 

+1

 

I think the "torque management" that OV is talking about is the ability to control exactly when the intake valves (finally) start to close. The Atkinson engine is designed to let them hang open much longer than normal. But you are delaying the generation of compression (and torque obviously) .. from what I've gathered in the 3rd gen forums they don't start to close normally until over 5k rpms!
If OV can get the intake valves to to start closing earlier you could get your low rpm power back.. they could really have something here

 

I have just read 18 pages on this thread. Why not get a survey going ,to see what people want? That might make the OP sway one way more than the other. I don't know how to set up a survey . So if someone knows chime in

 

I thought "torque management" is the retarding of timing(torque reduction) at the shift points.

 

To say I am excited about the possibility of bringing these truck's potential to light would
be an understatement.

Thanks to OP for noticing the need/desire from the community for such a product and putting in
the effort to make it happen.

 

I think torque management refers to the ability of the pcm to determine when "torque" shows up.. through the manipulation of intake valve timing. OV could probably extrapolate on this much better..

 

It used to be that the pcm watched throttle position and air flow/density and then based a fuel and spark timing strategy off of the information it received (3.4 liter, cable throttle with tps, fixed valve timing).. then variable valve timing came along (4.0 liter) and gave them The ability to open the valves (both in/ex) earlier and get more power at high rpm while still maintaining good low rpm/idle emissions. The latest Atkinson cycle takes it a step further. It not only has control over valve timing in terms of advance/retard, it has more control over the ability of the engine to generate its own compression .. it sees you floor the gas pedal but ultimately it has control over when the power shows up. Hence the feeling of nothing being there when you hit the gas.. it sees what you're asking from the engine and it says "hmm maybe I'll give you a little and then back off". You floor it more and it says "ok maybe a little more". You completely bury the gas and it finally says "ok fine, you can accelerate" and it has to downshift 2 gears to get to where IT has decided it wants to be. All this is because of emissions! These engineers (in order to meet regs) are insulating the driver more and more from the decision making of how the engine operates. As far as engineers are concered, the farther they can keep the driver from controlling the skinny pedal the better.. and before you start blaming toyota for this remember that all the manufacturers are in the same boat. They have to decide where in the fleet the hot rods are. If you want lightning fast throttle response and crisp shifting, buy a Lexus. They had to make a choice and ultimately they decided that trucks are for hauling shit and rolling around easy.. most people don't even notice. Folks on here though are a little more in tune with their trucks and what they consider a decent amount of power should be.

OVtune sounds legit to me. It can't be too hard to simply rewrite the software and get the emissions queen to breathe/inhale more like the venerable 4.0 we are all used to..

 

People... there is nothing wrong with "Atkinson". It is just VVT like in the 1GR... but better. It is only "Atkinson" at low output... has nothing to do with rpm. When you put your foot down the VVT optimizes power output. The problem is with the DBW throttle response and A/T, if equipped. Mazda SkyActiv is the same thing. I'm sure other manufacturers delay intake valve closure but choose not to call it Atkinson, SkyActiv, or anything else because it's just better use of VVT.

The 467 HP 5.0L V8 2UR-GSE in the 4.4s 0-60 Lexus RC-F uses "Atkinson" cycle.

There is nothing wrong with "on-demand "Atkinson"... "turning it off" is like saying turn off VVT. Focus your negativity where it deserves to be focused.