LS3 speed limiter issue

[GPI_Will]

Anyone having trouble with the speed limiter on e38s? We've got a 2010 camaro ls3 pulling throttle and timing at 158mph consistantly on 4th gear pulls. Third gear pulls are fine and we're not hitting the rev limiter and cat protection is disabled. H0129 through H0161 are all maxed out and H0156 is set to ECM. H0132, H0133, and H0134 are all set to no and I'm using v7.5 build 170. Is there anything I'm missing?

Thanks,
Will

[68problemchild]

If this is the same problem I was having its the Accellerator threshold limiter. My car is at the dyno so I will have the exact parameter next week.

[GPI_Will]

I looked through again and haven't found any additional throttle limiters yet but let me know when you can what you've found. We're still hitting a brick wall at 158mph.

[izaks]

Try setting H0134 to YES

[GPI_Will]

Have tried both yes and no and have tried h0156 as ECM and other module. Also tried pulling the tune with other software and disabling the speed limiter until 7100 RPMs with a parameter that EFILive didn't have. Nothing seems to have helped so far.

[GPI_Will]

Here is a log and the tune for that run just trying to remove the speed limiter. It pulls timing and throttle as soon as it sees 158mph.

11408
11409

[izaks]

This works with E38 in 2011 Commodore
LABELS Engine Protection Speed Limit Lower
Parameters Value
{H0129} Speed Limiter 280.000000 KMH
{H0155} Speed Limiter 4WD Low 280.000000 KMH
{H0130} Speed Limiter, RTD Failed 280.000000 KMH
{H0131} Speed Limiter, Comms Failure 280.000000 KMH
{H0156} Speed Limiter Source ECM
{H0157} Engine Protection Speed Limit 280.000000 KMH
{H0158} Engine Protection Speed Limit Lower 280.000000 KMH
{H0161} Speed Limiter Min Speed 280.000000 KMH
{H0132} Speed Limiter Method By Spark Option No
{H0133} Speed Limiter Method By Fuel Option No
{H0134} Speed Limiter Method By Throttle Option Yes

[izaks]

It looks like you are hitting the rev limiter.
Set B5203 to 7200 from 76.9C onwards for all run time values
Set B5210 to 7100
and see if it makes a difference.
Looking at the log/tun just after it hits the rev limiter, you are at 53.1sec and 98.1C in B5203, which has a value of 6,600

[HOWQUICK]

the key is

{H0156} Speed Limiter Source ECM

you will find it is set to "other module" from the factory.

Had the same issue with a customer who is the only guy on the road who has ever come back to me with a speed limit issue. Had all the speeds at 300kp/h and was limiting. Set the speeds to 60km/h and went through and found it.

[izaks]

the key is

{H0156} Speed Limiter Source ECM

you will find it is set to "other module" from the factory.

Had the same issue with a customer who is the only guy on the road who has ever come back to me with a speed limit issue. Had all the speeds at 300kp/h and was limiting. Set the speeds to 60km/h and went through and found it.

The issue reported had nothing to do with the speed limiter. It was caused by hitting the REV limiter.
.
The only other speed limit issue was with 2011 cars, which was fixed in build 168/9

[HOWQUICK]

.
The only other speed limit issue was with 2011 cars, which was fixed in build 168/9

Oh OK...we must of imagined it with the cars here then...

[gmh308]

The issue reported had nothing to do with the speed limiter. It was caused by hitting the REV limiter.
.
The only other speed limit issue was with 2011 cars, which was fixed in build 168/9

What was the parameter added in 168/9?

[gmh308]

Oh OK...we must of imagined it with the cars here then...

Howquick...havent see that name in a long time :).

[HOWQUICK]

Howquick...havent see that name in a long time :).

still around mate...just refrain from posting on forums as it always goes how this is heading....was cruising around here and saw the speed limiter question and thought I would add what we found here.

[gmh308]

still around mate...just refrain from posting on forums as it always goes how this is heading....was cruising around here and saw the speed limiter question and thought I would add what we found here.

LOL...knew you would be around. No doubt busy shipping thousands of horsepower out the door to those budding horsepower enthusiasts over there in the wild west where the streets are paved with gold! :) And yes...forums are forums. :) Though this one is far from the other one you are thinking about LOL.

[ls1mike]

I've got two seperate 2012 trucks which arent going over 99 mph and the settings are as followed here and many other attempted settings. Is this a known bug?

[PRAY]

Same thing just happened to me on the dyno saturday. I was only hitting 6,500rpm at 155mph and bang, no more power. So what is the speed limiter answer? I tried everything I could find. Cam was still pulling. Never got a real peak.

[GMPX]

Are they E38's Mike?
As far as I know the speed limiter disable method is still valid on the 2012 models, set H0156 to 'ECM' and adjust the other MPH parameters to suit.

[mbsurfersc]

Are you guys disabling the Rev Limit Accel Modifier (B5208)? This tends to play into all of this when the car is making some good power.

[ls1mike]

Took a second look today and it looks like it is a bug AND my bad.

Even though all my settings are supposed to be imperial, the speed limiter is still in KPH.

Gonna give it a shot with maxed values.

[PRAY]

Me too. Glad you noticed that.

[izaks]

Ran a 2011 Camaro manual with Magacharger on the dyno last week with the settings below and it ran to 297 kph
Previously it cust out between 250 and 260.

E38
OS 12639270 calz 12639270

LABELS Speed Limiter
Parameters Value
{H0129} Speed Limiter 511.992188 KMH
{H0155} Speed Limiter 4WD Low 511.992188 KMH
{H0130} Speed Limiter, RTD Failed 511.992188 KMH
{H0131} Speed Limiter, Comms Failure 300.000000 KMH
{H0156} Speed Limiter Source ECM
{H0157} Engine Protection Speed Limit 350.000000 KMH
{H0158} Engine Protection Speed Limit Lower 350.000000 KMH
{H0161} Speed Limiter Min Speed 350.000000 KMH
{H0132} Speed Limiter Method By Spark Option No
{H0133} Speed Limiter Method By Fuel Option No
{H0134} Speed Limiter Method By Throttle Option Yes
{H0163} Suspension Failure Speed Limiter Disabled