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Author Topic: Anti-lag launch and no-lift-shift secrets inside  (Read 529970 times)
NOTORIOUS VR
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« Reply #150 on: July 17, 2011, 03:54:50 PM »

EGT goes up Spen, pretty quickly.  I have an additional sensor.

Rick

Correct... EGT's skyrocket w/ ALS and NLS.  Which is why many aftermarket/standalone ECU's have a safety that take into account EGT temps and shut down these options if they get too high.
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Jason
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Breaks everything!


« Reply #151 on: July 18, 2011, 10:50:17 AM »

Correct on rising EGT.  I am guessing moments after activation the design limits of the compressor and manifolds is achieved and surpassed.
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NOTORIOUS VR
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« Reply #152 on: July 18, 2011, 11:44:01 AM »

Correct on rising EGT.  I am guessing moments after activation the design limits of the compressor and manifolds is achieved and surpassed.

Only seems to happen if I am beating on the car for a while and then try to do it...

We'll see how the car reacts @ the track in 2 weeks.
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spen
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« Reply #153 on: July 19, 2011, 02:14:37 AM »

I've only watched one car EGT wise, and it's EGT actually went down during launch control.  I didn't ever see what it did on no lift shift.

As I said, only one car though which is not statistically significant.  How many cars have you examined and EGTs have risen?

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NOTORIOUS VR
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« Reply #154 on: July 19, 2011, 07:05:37 AM »

I've only watched one car EGT wise, and it's EGT actually went down during launch control.  I didn't ever see what it did on no lift shift.

As I said, only one car though which is not statistically significant.  How many cars have you examined and EGTs have risen?

Pretty much any car I've tuned a stand alone on... ALS works by making the combustion in the manifold/exhaust (highly retarded timing + extra fuel).
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spen
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« Reply #155 on: July 19, 2011, 10:06:54 AM »


can only report what I've seen when adjusting tsrldyn to zero; egt fell on one car.  I don't have an additional sensor, I use rs6 sensors calibrated down to below freezing in the ecu. Both banks fell from 900 degrees Celsius starting point.

What was your EGT before you used ALS / NLS?

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Jason
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« Reply #156 on: July 19, 2011, 10:16:58 AM »

I have seen antilag setups peak over 1500 dC on certain cars.
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s5fourdoor
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« Reply #157 on: July 19, 2011, 07:13:04 PM »

spen - can you give details on how to install the rs6 sensors?

what needs to be changed?
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spen
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« Reply #158 on: July 20, 2011, 12:12:58 AM »

When you say certain cars, do you mean with this mod?

This mod hits a variable called Tsrldyn which is used to generate a coil dwell. The dwell time is used to charge the coil. Without the charge time it can't fire.

So you should be pumping fresh charge unburnt in to the manifold which then pops and burns either behind the car or late in the exhaust pipes.

All commercial ALS i have seen ignite the charge on the exhaust stroke, sending burning gas in to the manifold giving immense EGTs.



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Jason
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« Reply #159 on: July 25, 2011, 10:35:30 PM »

On WOTBOX cars specifically, yes.  I believe it functions the same way by cutting spark by eliminating the coil charge.  Since the throttle is open, air and fuel hit the hot manifolds and light off. 

I could probably test this using a laser pyrometer once it cools off here.
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janne
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« Reply #160 on: August 10, 2011, 01:39:51 AM »

Sorry for my stupid question, byt is this available only 2.7t?
I try to look thease in my 1.8t eeprom but now I am lost.
Regards:
Janne
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k0mpresd
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« Reply #161 on: August 25, 2011, 05:16:17 PM »

was wondering if maybe someone could throw me a bone here.
im no coder nor do i pretend to be a coder. and ida is still mostly above my head.
however, im trying to patch this routine in to my file but im not really sure what im looking for.

on the 2nd page someone mentions that the dwell ram location is easy to find because its in the routine that gets jumped out of. so i was wondering if someone could help me locate that and then i would at least have a starting point?

also, this is a really dumb question, but how do i add asm code in ida? i can do edit (f2) and edit hex but i know there has to be a better/easier way to patch the code.

any sort of information is greatly appreciated.

heres my routine. i already made a hex edit to jump to ffa60 (is it right?) :

« Last Edit: August 25, 2011, 05:20:44 PM by k0mpresd » Logged
phila_dot
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« Reply #162 on: August 25, 2011, 05:57:49 PM »

There is a patch program menu under edit, but I don't think there is any real word use for it. I don't think you will be able to assemble your final product. Ida can create executables in certain instances, but the disassembly has to be perfect.

Unforunately that is the extent of the help I can provide. Have you read the sticky on this topic?
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k0mpresd
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« Reply #163 on: August 26, 2011, 04:39:09 PM »

is dwell ram address 8ba4? bueller?

ok, so looking at that pseudo code, in the original added function for the m box, 8e40 is vehicle speed ram address and f87a is engine speed ram address. is that correct?

^^ pretty sure thats correct. so how would i identify these variables in my file? ive tried following the code backwards in the mbox file in ida to try to figure out how they are id'ed but not so much luck.

could someone explain where the f87a comes from? i dont see it referenced anywhere else in the code except in the custom routine. 8e40 is referenced in the custom routine and ida also lists data xref: rom: 0x8695da.
« Last Edit: August 27, 2011, 12:25:48 AM by k0mpresd » Logged
k0mpresd
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« Reply #164 on: August 27, 2011, 09:41:59 AM »

so is 9c40 one of the variables im looking for? this routine matches verbatim (almost, just locations are different) to the s4 routine where the 8e40 variable is pulled from (im still assuming the 8e40 and f87a are the variables you need to find).

s4:

ROM:8695DA                 mov     [r0], 8E40h ; 8E40h
ROM:8695DE                 mov     r4, [r0]
ROM:8695E0                 cmp     r4, #7FFFh
ROM:8695E4                 jmpr    cc_ULE, loc_8695EC
ROM:8695E6                 mov     r9, #0FFh
ROM:8695EA                 jmpr    cc_UC, loc_8695F2


my routine:

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