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Doing more testing, almost there as far as control.

The track was horrible and it was over 90 deg today and humid, car was down 3 mph from last week.

made 2 8.9 passes, 2 9.1 passes a 17 sec and 15 sec pass testing some stuff :)

Sean
totally sick man...I remember that car from the 12/1/12 rental...It's going to be insane once that motec is dialed in....If I remember correctly, there are tons and tons of settings that can be adjusted and played with on the motec vs the cobb. Congrats on the immediate success on the first few passes!
 

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nice....congrats sean!
 

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Discussion Starter · #44 ·
Thanks.

There is control of so much more that it takes time to setup. This particular motec application is different than others I have done in the past due to the vehicle integration/ torque model/trans aspect.

The guys at motec are super smart and when you see the implementation and work with the box you see how much planning and hard work went into it to make it this good.

I will keep working with it.

Sean
 

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http://www.youtube.com/watch?v=P1M3AxAFLdQ&feature=youtu.be

Doing more testing, almost there as far as control.

The track was horrible and it was over 90 deg today and humid, car was down 3 mph from last week.

made 2 8.9 passes, 2 9.1 passes a 17 sec and 15 sec pass testing some stuff :)

Sean
Looking good...Looks like only you & SPE are testing Motec right now...Sure looks promising...That's one of the things that I really like about your shop all your customers as well as yourself barely talk and just post up results & vids almost like Instagram! Lmao...wish all of the threads were like this one and less talking...

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Looking good...Looks like only you & SPE are testing Motec right now...Sure looks promising...That's one of the things that I really like about your shop all your customers as well as yourself barely talk and just post up results & vids almost like Instagram! Lmao...wish all of the threads were like this one and less talking...

Sent from my iPhone using GT-R Life mobile app
Sean and his team are the best to work with . Top notch guys who knows what they are doing with the GTR's . Been a happy customer ever since day one . We met at the Chicago 1/2 mile event . I was the red GTR that was built by Sean and his team . Trap at 188mph . Just got done recently boost logic intake . Looking forward to see what it will do on the 1/4 track.

Love the way it sound of the line . Lol might have to get one once you get everything sorted out . Nice work Sean !
 

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Sean and his team are the best to work with . Top notch guys who knows what they are doing with the GTR's . Been a happy customer ever since day one . We met at the Chicago 1/2 mile event . I was the red GTR that was built by Sean and his team . Trap at 188mph . Just got done recently boost logic intake . Looking forward to see what it will do on the 1/4 track.

Love the way it sound of the line . Lol might have to get one once you get everything sorted out . Nice work Sean !
Ok yea I remember you came around me up top. Car runs very strong. Curious to see what ur BL intake will do as well. Next time out I should be able to keep up with you. Lol...

Looking forward to more updates Sean

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Sean and his team are the best to work with . Top notch guys who knows what they are doing with the GTR's . Been a happy customer ever since day one . We met at the Chicago 1/2 mile event . I was the red GTR that was built by Sean and his team . Trap at 188mph . Just got done recently boost logic intake . Looking forward to see what it will do on the 1/4 track.

Love the way it sound of the line . Lol might have to get one once you get everything sorted out . Nice work Sean !
^ This.

Ivey and crew are second to none...Also love the way the car sounds with BOTL. Can't wait to see how it progresses.
 

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Hey Sean , I from Toronto I recently had the m1 put in my 2010 Gtr , basically an alpha 9 set up but added the ssp turbos and the full AMS fuel system with rails and fuel presure sensor and 102 mm exhaust from ssp , I flew in a motec specialist from Texas (Shawn from Fischer Motorsports) and had him set up the car , it's sounds totally different , crisp, clean ,tuned , pull like nuts and had to put torque limiting on first and second till the boost by gear feature get implemented in the firmware to stop my excessive wheel spin ...have you had any issues with the "torque ignore " amount number in the setting , how did you figure out what number to put in that box ? Wheel Tire Car Vehicle Plant
 

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If your car is running good and u have no torqe limitations, ie throttles closing at over 600-700nm that means your tuner has the right number in that box;)DON'T TOUCH that number..
 

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Robbie,

I would suggest you contact your tuner or Motec for help on this. I really cannot offer any technical help since we didn't tune the car.

Sean
 

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Hi Robbie,

Glad you like the Motec ECU!
If you're hitting 920Nm the 'Transmission Torque Limit Ignore' setting is correct.
You can check out the channel 'Transmission Torque Limit Throttle' in the logging (if it's setup to log). When you're at full throttle the TCM attempts to limit the maximum torque of the engine and the amount it tries to limit it to is a constant value. The value is dependant on the TCM program age (or year model of the car) and could be 600Nm, 630Nm, 680Nm etc. By setting the 'Transmission Torque Limit Ignore' parameter to the same value as the TCM requests, the ECU ignores this torque limit.
We could have just ignored this request from the TCM completely, but at other times (not full throttle), obeying the TCM torque limit actually improves drivability so we use the 'Ignore' method to conditionally ignore it when we don't want it.

On the Gear based boost limit, the torque limiting system via throttle is a better method of reducing torque than boost limiting, so we do not intend to add a gear based boost limit at this time. There is a Gear torque limit. I'll explain the major advantage of using a torque limit over a boost limit.

With a boost limit based on gear, the turbos only provide just enough boost to for the torque required so when you shift into the next gear and the boost aim is raised you have to wait for the turbos to spool up causing lag in response. When using a torque limit, the manifold pressure required to produce the limited torque is known. The Boost limit is set to the 'Inlet Manifold Pressure Limit' + 'Torque Limit Boost Pressure Margin' so that the turbos provide more boost than required and the throttles close to regulate the inlet manifold pressure to the limit. Because there is additional boost pressure backed up behind the throttles, when the next gear is selected and higher torque limit set, the throttles open allowing the built up boost through giving you almost instant response (no turbo lag).

It's a new way of thinking compared to traditional torque control methods like boost aim comps so it can take the tuners some getting used to. But if you really want a gear based boost limit the 'Torque Limit Boost Pressure Margin' can be set to '0' and this means the boost control only provides just enough boost to make the torque you have set in the Gear Torque Limit. Normally the boost pressure margin would be set to at least 20kPa so it only provides a small amount of extra boost and doesn't work the turbos too hard, but you can set it to say 50kPa or 80kPa depending on how much the torque is increased on gear shift, and have no lag on a step increase of torque.

Hope that helps, and if you have any more questions about the Motec ECU feel free to ask me directly.

Cheers,
Darren.
 

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Thanks Daren ... It makes sense and seems to be the route that my Motec tuner (Shawn @Fischer Motorsports) is taking ... Car runs great and engine control seems endless .. We re adding vdc and torque switches for road and tires changes on the fly ... Think my next project during the winter is swapping in an alpha 10 4.0l engine package and really upping this power ...

Great job , keep it up
Rob
 

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New time. [email protected] on motec now.


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Sean did u do a burn out b4 the runs? If so do motec have a rwd burn out?
 
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