Smooth Throttle for UpRev

Awgd8

And make sure you have a tuner version. =)

Awgd8

Pm

Awgd8

I did an experiment today using wstar throttle MAP vs Jordo.

Just a side note, I have a 2008 Infiniti EX35 AWD 5 speed. VQ35HR ENGINE. (297hp/253 ibs/tORQUE)
It is a bit heavier than the G37 coupe/sedan. I think mine is around 3,975 IBS.
It is not loaded so it is a lot lighter than 4k IBS EX35.

Temp outside is 47 F , on a flat surface too.

Car info : On a stock EX35 rims (heavy) with 225/60/17 snow tire (Michelin X-ice 2)

Tranny: 5 speed - used Manual mode on all runs. 45MPH where reached at the end of 1st gear at close 7.5k RPM( I did not bump the speed limiter) towards 2nd gear shift.

Jordo MAP 1st and 2nd run from top to bottom. (BELOW)




Wstar Map (Below)




I alternate runs between Jordo and Wstar. Jordo 1st run, then wstar 1st run. Then I shut the engine off for 5 minutes. I did the 2nd run with Jordo map again, then did wstar. The best time was 4.15 sec 0-45 using wstar MAP. (THROTTLE MAP) and I expect to be slower since engine is hotter, but it was the best time.

I apologized for just doing 0-45 MPH. I do not have a nice stretch of local road that is safer to do these runs. Numbers are slower than the G37 i expect from 0-45 sec. =)

I have not tried 0-60 on wstar throttle map yet. I am waiting to put on my summer wheels (17.5 ibs each) - The best 0-60 run i did was 6.3 sec. flat on Cipher with summer wheels with 89 F degree weather. I expect to be faster with wstar ETC MAP.

And BTW, I after doing these runs, I decided to try ETC: OFF , but after cruising with this setting, It does not make sense to do the 0-45 sec run. It`s just weird, car does not bog down on downshift, but it does not have that seat of pants pull.

I wish I could get some comparison from you guys with the G37 0-45 sec. run. - N/A engine pls. =)

jrb55gh

Just curious, does Jordo or wstar seem to pull stronger off the line?

Awgd8

jrb55gh,

Wstar kick *** off the line, the midrange is phenominal! Although, both Wstar and Jordo power start at 2.5K rpm in my car, I bet the G's must be lower due to lower gearing on the 7A/T or 6 speed manual.

In my car, I just floored it ( no torque breaking) from dead start. I need to hit 7.5k rpm to get a better 0-60 as I tried it early on my etuning phase. I experiment shifting at 7.1 -7.2 k RPM and lose about .2 -.3 secs.

I am excited to do another 0-60 run using wstar throttle map this time, but I need to install my summer rims (17.5 ibs) and tires first. I will do it next weekend.

Jordo!

Hmm.

I may have to try Wstar's map instead.

It might be that mine results in wheelspin, so "feels" faster, but clearly its slower.

Looking forward to more data -- thanks for sharing

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bleunetizen

Here is an interesting find with wstar's map.

There is a slight 'dip' in the throttle position between 5600rpm and 6000rpm. I am not sure if this hurts power or not but sensor reading dips from 4.2v down to below 4v.

any thoughts?

Attached Images

370Z_wstar_0.5leaner.JPG (217.7 KB, 41 views)

esfourteen

Does anyone have the stock throttle map values? I'm still fighting with getting my throttle to work at all with ETC on... damn uprev voodoo

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esfourteen

I really need to get a hold of someone at uprev to help out with this, I'd really love to be able to drive with ETC on again. I updated uprev/rom, flashed wstar's map to map1 and stock to map2. map1 was useless as it was last time, no throttle anywhere. switched to map2 on the fly and did some tracing/logging, I see about 4.15v which was decent, felt like the throttle was almost fully open, cool. Start the car up to drive home and I'm back to the same issue I was a year ago, 2.4v when flooring it until 4k rpm, then BAM wide open throttle. I didn't touch the maps at all... days like today make me want to switch over to ecutek.

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jrb55gh

This post may not be anything special to the track guys, but there is something worth mentioning to the street guys with a 7AT. I just completed the current Dynotronics Ecutek remote tune on my 2013 7AT. The car is completely stock and street driven smoothly with restraint when the wife is along but with gusto when she’s not.

On the street in stop and go traffic the stock throttle response has an annoying delay that is actually dangerous in slow, tight situations that require quick acceleration. From what I read in this thread it appears that wstar has developed a throttle table (2300) in Uprev that cuts the delay but accelerates hard with very little throttle pedal input. This sort of throttle response is ok with the 6MT in street traffic because the clutch can be used to modulate the torque to the rear wheels. However, on 7AT cars with stock stall speeds, smooth starts in heavy traffic require extreme throttle foot control. Wstar also commented “the curves are backwards from where they should be for drivability”. Soft response without delay at small throttle pedal inputs makes street driving more relaxed and might be a benefit on the track. I think I have this now with the tune in my Z.

The first try for a suitable throttle response curve was a 1:1 coupling of the throttle pedal to the throttle. This resulted virtually in no delay but the engine almost jumps out of the car with a short ¼ throttle stab at the pedal. It was impressively quick reving in neutral but difficult to drive with an automatic on the street. After a few iterations of logging data and adjusting throttle response to throttle pedal inputs, the delay is nil and the action of the throttle is smooth and gradual at throttle pedal inputs up to about 10%, but responds like gang busters if you put your foot in it.

Jordo!

Can you post the hexadecimal code for the map, both the first (1:1) vs he one you arrived at?

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Jordo!

8064 8064 80AE 8181 8237 82D1 83F5 851A 863F 8724 880A 8871 88AA 88DA 8900 89AF
8000 8011 80A5 81A4 8284 835F 84BA 85E2 86DB 8833 8918 8960 89A8 89D1 89E6 8AA3
7FBC 7FFD 80B6 81DD 82DD 83BA 853E 868F 87FD 892C 8A00 8A49 8AA1 8AF7 8B11 8BD3
7FB0 8018 80E3 8222 8336 8421 85B6 871E 8854 8974 8A5B 8AB1 8B07 8B3A 8B62 8C23
7F8F 801E 80FC 8258 8376 8475 8621 8788 88BA 89E8 8AF3 8B4B 8BBB 8C12 8C5E 8D9B
7F4F 7FFB 80DC 8247 836B 8463 8619 8779 88C9 8A1C 8B1C 8B93 8C00 8C5B 8CA4 8DD6
7F27 7FDF 80B8 8217 8334 8429 85CE 8754 88D6 8A24 8B33 8B99 8BF3 8C51 8C9F 8D8A
7F2B 7FE6 80B2 81FC 8304 83E9 858F 8738 88B8 8A0B 8B2D 8B8B 8C1B 8C8B 8CBC 8DD1
7EFC 7FC0 808D 81D5 82D8 83B7 8574 8736 88B5 8A2C 8B3C 8BBC 8C1C 8CA8 8CEB 8DEC
7ED4 7FA9 807D 81D1 82DA 83BE 85A2 8773 8907 8A5D 8B5B 8BC7 8C5D 8CD6 8D1D 8E1D
7ED4 7FBD 809B 81F5 8307 8404 8612 87D2 8952 8A6F 8B64 8BB7 8C63 8CE3 8D3E 8E16
7ECA 7FC1 80A6 81FF 8316 8422 8642 87D3 893D 8A7C 8B93 8C1C 8CA2 8CFC 8D49 8E2F
7E9A 7F99 8082 81DE 82F7 8401 860A 877C 88EC 8A55 8B92 8C20 8C95 8CF9 8D47 8E16
7E64 7F6C 8058 81BB 82DB 83F4 85F9 8770 88C2 8A1B 8B6C 8BF0 8C61 8CB6 8D0E 8DC9
7D47 7E6D 7F6A 80E7 821D 834D 854A 86EA 883C 89A9 8B22 8B7F 8BCA 8C05 8C6D 8D2C

Hex code for stock map -- note, this is from 2011 7AT

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jrb55gh

"Can you post the hexadecimal code for the map, both the first (1:1) vs he one you arrived at?"

I am not sure that I can get that code. I do not have the tuner version of the software. I will ask Joe at Dynotronics if it is available to me.

esfourteen

thanks Jordo, it turns out i had the stock throttle map set properly my ecu just sometimes ignores the map switch or something, im really not sure but it would behave like I wasn't on the stock throttle map at all. Now that its actually using the stock map so far the car seems OK. I'm going to have to play with this a bit when I get on the dyno...

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jrb55gh

Jordo,

I do not have access to the hex files in my Dynotronics tune for the throttle response. However, I can post the data logging graphs of the actual throttle, VVT, VVEL responses to throttle pedal input. Apparently these responses are accomplished by bypassing the Uprev throttle table and directly specifying each parameter in the Ecutek software.

The first plot is the throttle opening in degrees (green), VVEL (yellow), VVT (blue) vs. throttle pedal sensor voltage in a 2000 rpm roll on. Idle is about .7 volts and full throttle is about 4.66 volts.

The second plot is the standing start data with the VVT (blue) incorporated into the same graph.

The third plot is the throttle opening in degrees (green) and VVEL (yellow) vs. throttle pedal sensor voltage in a normal standing start.