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Author Topic: Motronic DigiCams - Agressive Cam Lope With Code and VVT  (Read 11387 times)
Snow Trooper
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« on: March 07, 2016, 12:02:51 AM »

I have had some camshafts in development that apply to the 2.7t v6. Its an aggressive set of intake/exhaust cams and in a beta test phase. So far the only complaint is that the cars dont "sound cammed out", basically people want the lope sound that you hear on an Evo or v8 or whatever has a different head design or vvt situation and is fighting misfire at idle due to overlap.

Our 5v heads, at idle with our high lift, long duration and advanced turbo grind or even the stock grind for that matter will never sound poppy and jumping the way that some want because there is no overlap. However with basically any cams on a 2.7t (or 2.8, 1.8, 2.0, ect) using vvt you can achieve a nice cammed sound by forcing overlap at idle and disabling a few misfire items and changing some codewords.

This technique is nothing new, in the Mustang world they call if Ghost Cams and Ford even does it with a special key on the Boss 302. Many tuner communities do it and I have not seen it in our world yet. After much bugging from testers and realizing I want it myself I set it up and it works well. I figure the VAG scene could use one more software thing.

***disclaimers!- This will basically kill all misfire function at idle. This will waste fuel at idle. This will make your car run rough at idle, do your homework on whats happening, people will probably glare at you more than normal depending on how open your exhaust is. I have tested this in a limited capacity on my shop stk car and our stage 3 ko4 car with stock cams, for all I know at this point it will cause premature wear on tensioners from running at idle on low pressure and or completely destroy your whole car with you in it and should be used by no one Roll Eyes***

List of maps on Me7.1 I needed to change to get the sound and even vehicle rocking action sought. I am sure there is more to expand on here to make it as aggressive sounding as you want. Looking forward to what it sounds like on the 1.8t, will get a before and after video asap as well as test on different setups. So far my best idle speeds on the v6 for this seem to be about 850 rpm.

Edit: added mbox locations for maps not in normal defs.

KFDLUR rough running deviation, I FFed these in the idle range
KFDLUR1
KFDLUR2
KFDLURZ

CWNWGE 1894a -to allow cam adjustment independent of being in gear
NKRF -upped to disable knock control at idle
CWNWLL 1894b -To allow cam adjustment at idle
NMIDLU kill misfire recognition at idle, possibly redundant
TMNWLLKHE 17165 -temp threshold
RLSALULL -bumped up to keep surge recognition happy, possibly redundant
NMIALU -bumped up to keep misfire recognition happy, possibly redundant
KFNW -make note of use of first cell, and adjustment of rpm and load axis to tailor, idea is to kill just out of idle and not have dips when leaving the line during cam change to off for normal low end operation
KFZWMN -upped min ignition angle in the idle range, I have found that it likes to stay BTDC
RLSALULL -upped first cell at idle
« Last Edit: March 07, 2016, 11:06:46 AM by Snow Trooper » Logged

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_nameless
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« Reply #1 on: March 07, 2016, 07:03:28 PM »

I have had some camshafts in development that apply to the 2.7t v6. Its an aggressive set of intake/exhaust cams and in a beta test phase. So far the only complaint is that the cars dont "sound cammed out", basically people want the lope sound that you hear on an Evo or v8 or whatever has a different head design or vvt situation and is fighting misfire at idle due to overlap.

Our 5v heads, at idle with our high lift, long duration and advanced turbo grind or even the stock grind for that matter will never sound poppy and jumping the way that some want because there is no overlap. However with basically any cams on a 2.7t (or 2.8, 1.8, 2.0, ect) using vvt you can achieve a nice cammed sound by forcing overlap at idle and disabling a few misfire items and changing some codewords.

This technique is nothing new, in the Mustang world they call if Ghost Cams and Ford even does it with a special key on the Boss 302. Many tuner communities do it and I have not seen it in our world yet. After much bugging from testers and realizing I want it myself I set it up and it works well. I figure the VAG scene could use one more software thing.

***disclaimers!- This will basically kill all misfire function at idle. This will waste fuel at idle. This will make your car run rough at idle, do your homework on whats happening, people will probably glare at you more than normal depending on how open your exhaust is. I have tested this in a limited capacity on my shop stk car and our stage 3 ko4 car with stock cams, for all I know at this point it will cause premature wear on tensioners from running at idle on low pressure and or completely destroy your whole car with you in it and should be used by no one Roll Eyes***

List of maps on Me7.1 I needed to change to get the sound and even vehicle rocking action sought. I am sure there is more to expand on here to make it as aggressive sounding as you want. Looking forward to what it sounds like on the 1.8t, will get a before and after video asap as well as test on different setups. So far my best idle speeds on the v6 for this seem to be about 850 rpm.

Edit: added mbox locations for maps not in normal defs.

KFDLUR rough running deviation, I FFed these in the idle range
KFDLUR1
KFDLUR2
KFDLURZ

CWNWGE 1894a -to allow cam adjustment independent of being in gear
NKRF -upped to disable knock control at idle
CWNWLL 1894b -To allow cam adjustment at idle
NMIDLU kill misfire recognition at idle, possibly redundant
TMNWLLKHE 17165 -temp threshold
RLSALULL -bumped up to keep surge recognition happy, possibly redundant
NMIALU -bumped up to keep misfire recognition happy, possibly redundant
KFNW -make note of use of first cell, and adjustment of rpm and load axis to tailor, idea is to kill just out of idle and not have dips when leaving the line during cam change to off for normal low end operation
KFZWMN -upped min ignition angle in the idle range, I have found that it likes to stay BTDC
RLSALULL -upped first cell at idle
this is cool! thanks for sharing.
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Giving your mom a tuneup
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« Reply #2 on: March 07, 2016, 09:19:25 PM »

Video of the transition at warmup to quickly show the difference.
http://youtu.be/EOvv51QyYkU
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adam-
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« Reply #3 on: March 08, 2016, 05:29:48 AM »

I'll have a look at this tonight!  I need to get VVT working again on my 1.8t anyway, seems to be inactive just now. 
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Snow Trooper
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« Reply #4 on: March 09, 2016, 10:02:56 AM »

Update:

Theres benefits to changing requested torque at idle also, can really change how the effect sounds.

I am going to look into some other idle stabilization function and see if I can make it roll better.

Leaning out the afr makes it crack more on combustion.
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KmosK04
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« Reply #5 on: March 09, 2016, 12:12:42 PM »

Good work!
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mister t
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« Reply #6 on: March 14, 2016, 10:51:50 PM »

Super cool  Grin

Thanks for sharing that dude. I just ordered myself some catless dowpipes for the B6 S4. That kind of idle would sound badass on a crossplane V8.

Any different areas that you would need to change on an ME 7.1.1 ECU or are they the same between 7.1 and 7.1.1?
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jibberjive
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« Reply #7 on: March 15, 2016, 12:44:08 AM »

Are these cams Snow Trooper specials, or are you beta'ing for someone like IE?
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GetSlideways
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« Reply #8 on: March 15, 2016, 07:56:27 AM »

What is causing the activation? For example in the video they seem to "turn on" what is controlling that?

I appreciate new things being tried, experimented, and played with.
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hopsis
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« Reply #9 on: March 15, 2016, 08:41:24 AM »

Coolant temperature.
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Snow Trooper
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« Reply #10 on: March 15, 2016, 04:50:02 PM »

Correct, you can use time, coolant temp, oil temp and other inputs.
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vwmaniac
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« Reply #11 on: March 17, 2016, 06:50:38 PM »

Working on implementing this on both my R32 and 1.8t. Thank for the info. I've looked in to the damos I have and some of the maps you refer to are not present, the 1.8t has more available so that seems a bit quicker to implement and test, the R on the other hand will require some more work. I'll post back in here with some info.
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Snow Trooper
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« Reply #12 on: March 17, 2016, 09:42:37 PM »

Working on implementing this on both my R32 and 1.8t. Thank for the info. I've looked in to the damos I have and some of the maps you refer to are not present, the 1.8t has more available so that seems a bit quicker to implement and test, the R on the other hand will require some more work. I'll post back in here with some info.

Def reference the FR. Thanks for testing it out. Have a few people running it now, took it off my s4 but going to implement it on my b7 rs4 for testing.
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fknbrkn
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« Reply #13 on: March 18, 2016, 12:07:57 AM »

...
« Last Edit: November 10, 2023, 06:42:58 AM by fknbrkn » Logged
Snow Trooper
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« Reply #14 on: March 18, 2016, 10:56:56 AM »

I ended up messing with a lot more little things to fine tune it. Load maps at idle, timing, idle stabilization, ect. Rich vs lean will also change how the tick over sounds.
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