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Old 17-05-2017, 14:02   #1
tazzi
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Link G4 vs standard ecu remap??

what's the pros and cons of the link over the standard ecu? Are there gains to be made by the link bhp wise that can't be made by the standard ecu??
When aiming for 450bhpish will the link stand a better chance of achieving better figures?
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Old 17-05-2017, 14:21   #2
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Stock ecu will do that no problem, the link will have better motorsport features, link is a great aftermarket ecu vs £££
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Old 17-05-2017, 14:23   #3
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Also choose what ever your mapper is happiest working with
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Old 18-05-2017, 07:59   #4
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Link knock control doesn't work properly.
Stock is infinitely better.

http://forums.linkecu.com/index.php?...plug-in-evo-6/


Funny that nobody seems to know that the stock evo knock sensor is a resonant type and has a frequency of about 12KHz.

That's if you understand what the gods are saying in the link.
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Old 18-05-2017, 09:19   #5
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It's actually 13, if you the windowing and threshold table is set right you shouldn't have issues
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Old 18-05-2017, 09:23   #6
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Though I agree stock has decent knock control it also has its limitations, especially with internal noise, at least with the link you can define these areas
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Old 18-05-2017, 13:36   #7
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Quote:
Originally Posted by sbn1979 View Post
It's actually 13, if you the windowing and threshold table is set right you shouldn't have issues
It's actually just under 12 KHZ.


Where did you get the 13 from?




You just made it up?
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Old 18-05-2017, 13:50   #8
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Course I made it up If you don't know why it's 13 that's your problem
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Old 18-05-2017, 15:09   #9
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So if you were forging for example then OE knock control could pick up noise?

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Though I agree stock has decent knock control it also has its limitations, especially with internal noise, at least with the link you can define these areas
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Old 18-05-2017, 15:34   #10
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So if you were forging for example then OE knock control could pick up noise?
Yes this is an issue - the stock ECU is calibrated against a standard engine. Change *anything* and the knock control may start picking up random noise as knock. Whether it be tappets, cams, a stiff lower engine mount, etc, etc, and definitely if you change the characteristics of the rotating/reciprocating masses - all the "different" noise can induce the stock ECU to retard the timing even if you don't have knock.


I am very, very pleased with the Link G4+ and is one of the best mods I've fitted, even though it doesn't release any more "Power" from my standard-ish engine. It runs it noticeably smoother and the MAF is removed as well and mapped on boost sensor without the need for complex/time consuming VE mapping on the standard ECU.

I'm pretty sure a competent mapper could map in the knock control if required, it needs proper windowing (crank angle sensor window for each cylinder) and background noise settings mapped in, and if mapped properly will detect knock and retard the ignition timing on a single cylinder as opposed to the standard ECU retarding on all 4 cylinders for any single cylinder knock detection. It has to said, though, that a decent mapper wouldn't be mapping a dangerous map that required knock control on the understanding that you always use decent fuel, etc. Twin maps is useful as well for a valet map, low octane fuel map, or just pops,n,bangs....

Yours Aye

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Old 18-05-2017, 15:51   #11
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What other features are you using via the link?? Anti lag?? Launch control?
How is the boost changed from high to low, isnthere a controller of via the water spray







UOTE=Rampant;5777485]Yes this is an issue - the stock ECU is calibrated against a standard engine. Change *anything* and the knock control may start picking up random noise as knock. Whether it be tappets, cams, a stiff lower engine mount, etc, etc, and definitely if you change the characteristics of the rotating/reciprocating masses - all the "different" noise can induce the stock ECU to retard the timing even if you don't have knock.


I am very, very pleased with the Link G4+ and is one of the best mods I've fitted, even though it doesn't release any more "Power" from my standard-ish engine. It runs it noticeably smoother and the MAF is removed as well and mapped on boost sensor without the need for complex/time consuming VE mapping on the standard ECU.

I'm pretty sure a competent mapper could map in the knock control if required, it needs proper windowing (crank angle sensor window for each cylinder) and background noise settings mapped in, and if mapped properly will detect knock and retard the ignition timing on a single cylinder as opposed to the standard ECU retarding on all 4 cylinders for any single cylinder knock detection. It has to said, though, that a decent mapper wouldn't be mapping a dangerous map that required knock control on the understanding that you always use decent fuel, etc. Twin maps is useful as well for a valet map, low octane fuel map, or just pops,n,bangs....

Yours Aye

Mark H[/QUOTE]
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Old 18-05-2017, 16:08   #12
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Quote:
Originally Posted by tazzi View Post
What other features are you using via the link?? Anti lag?? Launch control?
How is the boost changed from high to low, isnthere a controller of via the water spray
Extra features?

MAF removed - load mapped via boost.
Closed loop boost works perfectly fine for me.
I have true sequential ignition on my Coil-on-Plug setup.
And pops'n'bangs via a second map via the ICS Auto switch. Second map is basically the same boost and timing as the main map except for the low load for mortar and machine gun fire
My Mrs calls me a child. I agree. It's hilarious.

That is all I need. Perhaps Open Loop boost control would be a very slight enhancement and knock control could be mapped, but for my road car I don't deem it as a necessity since I always use Nitro+ or Momentum fuel.

Yours Aye

Mark H
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Old 18-05-2017, 17:21   #13
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The G4 is an excellent ecu. I run an old school power fc d- jetro which I've converted to the pro version by changing the eprom. I've been running this for the last 11 years. In the future I will change to the G4. So going from an ecu that has no knock control whatsoever to one that has knock control per cylinder along with all the rest of the features like individual fueling, sequential firing order instead of the wasted spark one,offering a much newer software yet simple enough and a much faster cpu than the stock ecu and power fc offers, will be awesome for me as I do my own mapping.



An excellent ecu is not the one that offers the most extra features of the type of anti-lag, launch control, but the one that offers the most features in the best version of them for someone to fine tune a setup in the best way possible.









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Old 18-05-2017, 17:37   #14
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How come you want to go open loop boost control?

Quote:
Originally Posted by Rampant View Post
Extra features?

MAF removed - load mapped via boost.
Closed loop boost works perfectly fine for me.
I have true sequential ignition on my Coil-on-Plug setup.
And pops'n'bangs via a second map via the ICS Auto switch. Second map is basically the same boost and timing as the main map except for the low load for mortar and machine gun fire
My Mrs calls me a child. I agree. It's hilarious.

That is all I need. Perhaps Open Loop boost control would be a very slight enhancement and knock control could be mapped, but for my road car I don't deem it as a necessity since I always use Nitro+ or Momentum fuel.

Yours Aye

Mark H
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Old 18-05-2017, 18:06   #15
Rampant
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Quote:
Originally Posted by sbn1979 View Post
How come you want to go open loop boost control?
Compensation for atmospheric conditions...
(If I wasn't selling the car I'd get it mapped in.)
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