EZK ignition self tuning chip
10-02-2020, 03:31 PM
#91
That'd be cool. If you had your LH rebuilt they would have transferred the chip that was in it? The AutoThority fuel chip is probably not helping things if it is still in there. I can send you a stock one.
Too much to fit on the case label but technically you would only want to reset if you go to a higher octane. If you go to a lower octane the chip can adjust downward.
Too much to fit on the case label but technically you would only want to reset if you go to a higher octane. If you go to a lower octane the chip can adjust downward.
I had a separate issue with my ground strap so it's erased now anyway and I already drained the 94 from the tank. Doh! But good to know that going down on octane is fine.
PM me your shipping address and I will mail you the AA chip for review.
Last edited by Adamant1971; 10-02-2020 at 03:44 PM.
10-02-2020, 06:12 PM
#92
Rennlist Member
Bonjour,
This chip looks good. I'm running 100% E85 fuel with GEN II 19LBS injector on a stock 88 S4 with an X-pipe. May work great with it! May need to reset it in spring and summer when there will be more ethanol in the fuel.
When my car will get its gearbox back on I will go back to you to get your chip and try it.
Thank you for what you propose to us.
Raphaël
This chip looks good. I'm running 100% E85 fuel with GEN II 19LBS injector on a stock 88 S4 with an X-pipe. May work great with it! May need to reset it in spring and summer when there will be more ethanol in the fuel.
When my car will get its gearbox back on I will go back to you to get your chip and try it.
Thank you for what you propose to us.
Raphaël
10-02-2020, 06:58 PM
#93
Rennlist Member
Bonjour,
This chip looks good. I'm running 100% E85 fuel with GEN II 19LBS injector on a stock 88 S4 with an X-pipe. May work great with it! May need to reset it in spring and summer when there will be more ethanol in the fuel.
When my car will get its gearbox back on I will go back to you to get your chip and try it.
Thank you for what you propose to us.
Raphaël
This chip looks good. I'm running 100% E85 fuel with GEN II 19LBS injector on a stock 88 S4 with an X-pipe. May work great with it! May need to reset it in spring and summer when there will be more ethanol in the fuel.
When my car will get its gearbox back on I will go back to you to get your chip and try it.
Thank you for what you propose to us.
Raphaël
That seems a quite small injector for E85, considering you need what, 30% more to make the same power? Even 24lb would be too small I would think. Am I off in what I think you need here?
10-02-2020, 07:26 PM
#94
Rennlist Member
I have a Wide Band O2 sensor and what I observed is that even with stock injectors, with 80% E85 the LH is able to handle this fuel. Over 80% E85, the LH limits the fuel injected and the car is running leaner.
With GEN II injectors, at idle and WOT, enrichment is much better and the LH allow the right amount of fuel to be injected.
On what I observed, the limitation is not with the injectors but with the LH that do not increase or decrease the fuel quantity over or below 20%.
When I use unleaded fuel, with the injectors I have, the car is running too rich at idle and WOT. At WOT I'm below 0,8 lambda... With E85 I'm 0,9. It is a little bit lean but the car run better that with unleaded fuel.
Raphaël
With GEN II injectors, at idle and WOT, enrichment is much better and the LH allow the right amount of fuel to be injected.
On what I observed, the limitation is not with the injectors but with the LH that do not increase or decrease the fuel quantity over or below 20%.
When I use unleaded fuel, with the injectors I have, the car is running too rich at idle and WOT. At WOT I'm below 0,8 lambda... With E85 I'm 0,9. It is a little bit lean but the car run better that with unleaded fuel.
Raphaël
10-02-2020, 07:56 PM
#95
Rennlist Member
I have a Wide Band O2 sensor and what I observed is that even with stock injectors, with 80% E85 the LH is able to handle this fuel. Over 80% E85, the LH limits the fuel injected and the car is running leaner.
With GEN II injectors, at idle and WOT, enrichment is much better and the LH allow the right amount of fuel to be injected.
On what I observed, the limitation is not with the injectors but with the LH that do not increase or decrease the fuel quantity over or below 20%.
When I use unleaded fuel, with the injectors I have, the car is running too rich at idle and WOT. At WOT I'm below 0,8 lambda... With E85 I'm 0,9. It is a little bit lean but the car run better that with unleaded fuel.
Raphaël
With GEN II injectors, at idle and WOT, enrichment is much better and the LH allow the right amount of fuel to be injected.
On what I observed, the limitation is not with the injectors but with the LH that do not increase or decrease the fuel quantity over or below 20%.
When I use unleaded fuel, with the injectors I have, the car is running too rich at idle and WOT. At WOT I'm below 0,8 lambda... With E85 I'm 0,9. It is a little bit lean but the car run better that with unleaded fuel.
Raphaël
So- what size injectors are fitted?
10-02-2020, 08:28 PM
#96
Rennlist Member
I totally agree that 30% more fuel must be injected to get the right mixture... and my fuel consumption increased about 30%... If I was missing 30% fuel, the car may run rough... but it is not the case...
When I follow what the Wideband O2 sensor direct me, the car is running good. If not, the car is running rough...
Raphaël
When I follow what the Wideband O2 sensor direct me, the car is running good. If not, the car is running rough...
Raphaël
10-02-2020, 09:43 PM
#97
Rennlist Member
I have a Wide Band O2 sensor and what I observed is that even with stock injectors, with 80% E85 the LH is able to handle this fuel. Over 80% E85, the LH limits the fuel injected and the car is running leaner.
With GEN II injectors, at idle and WOT, enrichment is much better and the LH allow the right amount of fuel to be injected.
On what I observed, the limitation is not with the injectors but with the LH that do not increase or decrease the fuel quantity over or below 20%.
When I use unleaded fuel, with the injectors I have, the car is running too rich at idle and WOT. At WOT I'm below 0,8 lambda... With E85 I'm 0,9. It is a little bit lean but the car run better that with unleaded fuel.
Raphaël
With GEN II injectors, at idle and WOT, enrichment is much better and the LH allow the right amount of fuel to be injected.
On what I observed, the limitation is not with the injectors but with the LH that do not increase or decrease the fuel quantity over or below 20%.
When I use unleaded fuel, with the injectors I have, the car is running too rich at idle and WOT. At WOT I'm below 0,8 lambda... With E85 I'm 0,9. It is a little bit lean but the car run better that with unleaded fuel.
Raphaël
Ok, lets say the LH can work this out.
You'll be far under OE HP being only able to make roughly 30% less peak HP than a stock S4...right?
10-03-2020, 11:04 AM
#98
Rennlist Member
Bonjour,
Sorry but the engine is working great and on track, I'm not behind other 928 S4... Why would you like I have 30% HP missing?
I have a wide band O2 sensor that can provide a narrow band O2 sensor signal for the LH. The LH is enriching fuel as required in order to stay stoechiometric (closed loop) I can clearly see on the Lambda signal that the LH is regulating. At WOT, the GEN II injectors inject more fuel than the stock injectors. With regular fuel it is far too rich (AFR about 11). The engine is having less HP with regular fuel. With E85 I may be missing a little bit fuel but the engine is working greater than with regular fuel with these injectors.
When the engine do not have the right amount of fuel (too much or less) you see it with the wide band sensor indicator and more over, you feel it. 30% it is a lot... you feel it... with 30% fuel missing the engine may be unpleasant to drive and I don't know if it will even work...
At idle, with regular fuel, the car is running too rich. AFR about 10... you feel that the engine is not running good... I think the LH is hitting the -20% limit and refuse to inject less fuel. When you put E85, the injector inject more fuel than stock so the LH does not hit the -20% limit.
It is just when I disconnect the battery that sometimes the car is running very lean of a while (about 10 minutes). I think the LH is starting from a stock open loop map ignoring the o2 sensor signal for a while and then it does not handle correctly the fuel... But after a while is it good. But during whose phases where the engine is not having the right amount of fuel, you cannot ignore it! You feel it...
E85 fuel is much more resistant to knock. I think it is also why my car is running much better at high RPM with E85.
With this smart EZK chip that adjust the advance cylinder by cylinder I think my engine will take more advantage of E85 fuel.
Best Regards,
Raphaël
Sorry but the engine is working great and on track, I'm not behind other 928 S4... Why would you like I have 30% HP missing?
I have a wide band O2 sensor that can provide a narrow band O2 sensor signal for the LH. The LH is enriching fuel as required in order to stay stoechiometric (closed loop) I can clearly see on the Lambda signal that the LH is regulating. At WOT, the GEN II injectors inject more fuel than the stock injectors. With regular fuel it is far too rich (AFR about 11). The engine is having less HP with regular fuel. With E85 I may be missing a little bit fuel but the engine is working greater than with regular fuel with these injectors.
When the engine do not have the right amount of fuel (too much or less) you see it with the wide band sensor indicator and more over, you feel it. 30% it is a lot... you feel it... with 30% fuel missing the engine may be unpleasant to drive and I don't know if it will even work...
At idle, with regular fuel, the car is running too rich. AFR about 10... you feel that the engine is not running good... I think the LH is hitting the -20% limit and refuse to inject less fuel. When you put E85, the injector inject more fuel than stock so the LH does not hit the -20% limit.
It is just when I disconnect the battery that sometimes the car is running very lean of a while (about 10 minutes). I think the LH is starting from a stock open loop map ignoring the o2 sensor signal for a while and then it does not handle correctly the fuel... But after a while is it good. But during whose phases where the engine is not having the right amount of fuel, you cannot ignore it! You feel it...
E85 fuel is much more resistant to knock. I think it is also why my car is running much better at high RPM with E85.
With this smart EZK chip that adjust the advance cylinder by cylinder I think my engine will take more advantage of E85 fuel.
Best Regards,
Raphaël
10-03-2020, 11:59 AM
#99
Rennlist Member
Gen 2 injectors do not inject anymore fuel than the stock items assuming they are rated at the same 19lb nominal capacity rating. have gen 2 injectors and they are 30lb rating but the fuelling is adjusted to suit with the ST2 programming. So the real question here would appear to be what rating of injectors do you have fitted? If they are gen2 then someone clearly changed them out as they are non stock.
10-03-2020, 03:03 PM
#101
Rennlist Member
The injector type number you quote is indeed a 19lb injector. Have you checked the numbering on the injectors actually fitted?
If you do know for sure you have 19lb injectors fitted it would be interesting to know how they have been made to work running E85 and a stock LH unit.
If you do know for sure you have 19lb injectors fitted it would be interesting to know how they have been made to work running E85 and a stock LH unit.
10-03-2020, 04:09 PM
#102
Rennlist Member
Bonjour,
Sorry but the engine is working great and on track, I'm not behind other 928 S4... Why would you like I have 30% HP missing?
I have a wide band O2 sensor that can provide a narrow band O2 sensor signal for the LH. The LH is enriching fuel as required in order to stay stoechiometric (closed loop) I can clearly see on the Lambda signal that the LH is regulating. At WOT, the GEN II injectors inject more fuel than the stock injectors. With regular fuel it is far too rich (AFR about 11). The engine is having less HP with regular fuel. With E85 I may be missing a little bit fuel but the engine is working greater than with regular fuel with these injectors.
When the engine do not have the right amount of fuel (too much or less) you see it with the wide band sensor indicator and more over, you feel it. 30% it is a lot... you feel it... with 30% fuel missing the engine may be unpleasant to drive and I don't know if it will even work...
At idle, with regular fuel, the car is running too rich. AFR about 10... you feel that the engine is not running good... I think the LH is hitting the -20% limit and refuse to inject less fuel. When you put E85, the injector inject more fuel than stock so the LH does not hit the -20% limit.
It is just when I disconnect the battery that sometimes the car is running very lean of a while (about 10 minutes). I think the LH is starting from a stock open loop map ignoring the o2 sensor signal for a while and then it does not handle correctly the fuel... But after a while is it good. But during whose phases where the engine is not having the right amount of fuel, you cannot ignore it! You feel it...
E85 fuel is much more resistant to knock. I think it is also why my car is running much better at high RPM with E85.
With this smart EZK chip that adjust the advance cylinder by cylinder I think my engine will take more advantage of E85 fuel.
Best Regards,
Raphaël
Sorry but the engine is working great and on track, I'm not behind other 928 S4... Why would you like I have 30% HP missing?
I have a wide band O2 sensor that can provide a narrow band O2 sensor signal for the LH. The LH is enriching fuel as required in order to stay stoechiometric (closed loop) I can clearly see on the Lambda signal that the LH is regulating. At WOT, the GEN II injectors inject more fuel than the stock injectors. With regular fuel it is far too rich (AFR about 11). The engine is having less HP with regular fuel. With E85 I may be missing a little bit fuel but the engine is working greater than with regular fuel with these injectors.
When the engine do not have the right amount of fuel (too much or less) you see it with the wide band sensor indicator and more over, you feel it. 30% it is a lot... you feel it... with 30% fuel missing the engine may be unpleasant to drive and I don't know if it will even work...
At idle, with regular fuel, the car is running too rich. AFR about 10... you feel that the engine is not running good... I think the LH is hitting the -20% limit and refuse to inject less fuel. When you put E85, the injector inject more fuel than stock so the LH does not hit the -20% limit.
It is just when I disconnect the battery that sometimes the car is running very lean of a while (about 10 minutes). I think the LH is starting from a stock open loop map ignoring the o2 sensor signal for a while and then it does not handle correctly the fuel... But after a while is it good. But during whose phases where the engine is not having the right amount of fuel, you cannot ignore it! You feel it...
E85 fuel is much more resistant to knock. I think it is also why my car is running much better at high RPM with E85.
With this smart EZK chip that adjust the advance cylinder by cylinder I think my engine will take more advantage of E85 fuel.
Best Regards,
Raphaël
You. Can't. (On 19s)
You are likely at peak injector capacity, just short of a stock S4 on gasoline, where that gags S4...can stack on a few dozen more HP before reaching the same injector limit you have already it. I would be surprised to see your car turn 260Hp.
A well managed Gas S4 doesn't have a knock problem that would require E85, and also isn't really knock limited in timing either that much.
An S4 on gasoline and stock injectors might see 340-350Hp at the crank...you'll be lucky to get to 320 (stock) with all the mods and sharktuning..IF in fact you have 19# injectors...and not 24s.
"At idle, with regular fuel, the car is running too rich. AFR about 10....and...With regular fuel it is far too rich (AFR about 11)..." <--These are not normal...and not in the LH map at all.
On stock equipment? You've got issues...or larger injectors than you believe you have..and by dumb luck it's all working, the ECU thinks it has 19s, and you really have 24s. I think this is what you have.
10-03-2020, 04:10 PM
#103
Rennlist Member
The injector type number you quote is indeed a 19lb injector. Have you checked the numbering on the injectors actually fitted?
If you do know for sure you have 19lb injectors fitted it would be interesting to know how they have been made to work running E85 and a stock LH unit.
If you do know for sure you have 19lb injectors fitted it would be interesting to know how they have been made to work running E85 and a stock LH unit.
Agreed, it absolutely should not be.
10-05-2020, 04:31 PM
#104
I put close to 800 Km’s on my car this weekend. Still impressed with this chip
Well done Ken
Well done Ken
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Peter F (10-05-2020)
10-11-2020, 04:44 PM
#105
Inventor
Rennlist Member
Rennlist Member
More GTS code trivia: besides the automatic shift protection table, the only other changes in the main code (there may be more in the diag tester section which I am not concerned with) are a more complex Hall-sensor error check and what I think is a CPS dead-man's-switch? I imagine the latter is to stop misfiring from unexpected CPS signals.
When I first started testing the chip I had +4° cam advance so I was putting 91 octane (95 RON) in the tank. Recently, I adjusted the cams in my early-88 back to zero so I have been running 89 octane (92 RON) with no apparent loss in power. However, it does take a few seconds longer to fill up as the attendant looks perplexed when I say Plus instead of Super
(Oregon won't let you pump your own gas.)
Added a FAQ
When I first started testing the chip I had +4° cam advance so I was putting 91 octane (95 RON) in the tank. Recently, I adjusted the cams in my early-88 back to zero so I have been running 89 octane (92 RON) with no apparent loss in power. However, it does take a few seconds longer to fill up as the attendant looks perplexed when I say Plus instead of Super
(Oregon won't let you pump your own gas.)Added a FAQ