UpRev full tuning capabitliy??

G37Sam · 08-04-2010, 05:19 AM

Thing is, UpRev can control ECU parameters directly, but the VVEL has it's own controller I believe, can that be accessed from the OBD2 port? And would getting more lift be as simple as editing a number in some table somewhere? Or would the mechanical capabilities of the VVEL restrict that?

God I hate how this VVEL is a black box that we just have to live with

Jordo! · 08-04-2010, 06:08 AM

Quote:

Originally Posted by 1slow370

no see the problem with open throttle blades means you cannot hook a positive displacement supercharger to the car. your only options are turbo and centrifugal (hence stillen using a vortech) I have my own way around this particular problem but i would like to not have to install a separate electronic box and another set of throttle bodies.

Edit: is not being able to sue the most efficient form of supercharger made good enough reason for uprev to release this or not? who in there right mind is going to make a kit that is impossible to rune without having the software to back it up?

Why can't you have a positive displacement blower? Is the problem constant pressure? Couldn't you just use a bypass or clutch type engagement?

Anway, the stock VVEL settings are probably more forgiving for any blower than a turbine anyway -- blowers aren't built in exhaust restrictions.

Quote:

Originally Posted by G37Sam

Thing is, UpRev can control ECU parameters directly, but the VVEL has it's own controller I believe, can that be accessed from the OBD2 port? And would getting more lift be as simple as editing a number in some table somewhere? Or would the mechanical capabilities of the VVEL restrict that?

God I hate how this VVEL is a black box that we just have to live with

I have read this elsewhere.

For the electronics savvy, the simplest way is probably to figure out what voltages various VVEL sensors are looking for to vary lift and valve timing and then just condition those signals by splicing into the ECU wires. Thus, no tuning code would be needed, and in theory, the ECU would "think" it's operating as normal. That's essentially how piggyback VVTi and VVTLi controllers like the Camcon and V-manage work.

So... the million dollar question is: Does anyone have the VVEL ECU wiring diagram, the schematics for the VVEL sensors, or know anything about their operation, voltages, resistance, etc?

1slow370 · 08-05-2010, 03:04 AM

all the info you want is in the fsm download it and get reading. and yeah the blower would be pushing full cfm's all the time with no throttlebodies to restrict the inlet. and clutches are real gay you might as well just have nitrous or turbo's if you going to throw out the throttle characteristics of a true positive displacement setup.

Jordo! · 08-05-2010, 05:48 AM

Quote:

Originally Posted by 1slow370

all the info you want is in the fsm download it and get reading. .

Cool, I'll check it out -- thanks

Quote:

Originally Posted by 1slow370

and yeah the blower would be pushing full cfm's all the time with no throttlebodies to restrict the inlet. and clutches are real gay you might as well just have nitrous or turbo's if you going to throw out the throttle characteristics of a true positive displacement setup.

Ha ha ha -- well, I don't know if it would be quite that bad. You'd just need a decent TPS switch to have it come on at say, 2/3 throttle. That's how the old Blitz kit was set up for the 7th gen Celica, and it worked fine.

Although, it might be okay even with a properly set up bypass valve, which all modern PD SC's have now anyway.

It should still make boost ealier and have better throttle response than a centrifugal blower or turbo.

Chris@FsP · 08-05-2010, 10:38 PM

Quote:

Originally Posted by G37Sam

Thing is, UpRev can control ECU parameters directly, but the VVEL has it's own controller I believe, can that be accessed from the OBD2 port? And would getting more lift be as simple as editing a number in some table somewhere? Or would the mechanical capabilities of the VVEL restrict that?

God I hate how this VVEL is a black box that we just have to live with

The ECU calculates the target valve lift based on driving conditions, and sends that info to the VVEL control module, which in turn controls the actuator motor. So, theoretically, UpRev should have the capability to precisely control VVEL.

Jordo! · 08-05-2010, 11:10 PM

Quote:

Originally Posted by Chris@FsP

The ECU calculates the target valve lift based on driving conditions, and sends that info to the VVEL control module, which in turn controls the actuator motor. So, theoretically, UpRev should have the capability to precisely control VVEL.

Yeah, but it's probably determined by referencing a load x RPM table, so it would still be ideal to edit the actual values in the table directly.

Although, I suppose they could spoof it by sending altered MAF/load readings, and then just adjust AFR and ignition to compensate, but that might create all sorts of weird driveability quirks.

G37Sam · 08-06-2010, 07:52 AM

Quote:

Originally Posted by Chris@FsP

The ECU calculates the target valve lift based on driving conditions, and sends that info to the VVEL control module, which in turn controls the actuator motor. So, theoretically, UpRev should have the capability to precisely control VVEL.

Calculate? Are you certain it's not just another values in a table like Jordo suggested

08-04-2010, 05:19 AM	#1 (permalink)
G37Sam A True Z Fanatic Join Date: Dec 2008 Location: Dubai, UAE Posts: 1,507 Drives: RB'd G37 Rep Power: 22	Thing is, UpRev can control ECU parameters directly, but the VVEL has it's own controller I believe, can that be accessed from the OBD2 port? And would getting more lift be as simple as editing a number in some table somewhere? Or would the mechanical capabilities of the VVEL restrict that? God I hate how this VVEL is a black box that we just have to live with __________________ '14 Viper GTS '08 RB'd G37S - Sold

08-05-2010, 03:04 AM	#3 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7252	all the info you want is in the fsm download it and get reading. and yeah the blower would be pushing full cfm's all the time with no throttlebodies to restrict the inlet. and clutches are real gay you might as well just have nitrous or turbo's if you going to throw out the throttle characteristics of a true positive displacement setup. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

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