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#1 |
Guest
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![]() I have been thinking about the EZ116K ignition ECU´s (LH2.4) for a while and I thought that this was the time to bring this up. This is interesting for many of you so please bare with me...
When it is "chipped" with my chips it gets a more ideal ignition curve to make power. The EZ117K (LH2.2) is not chippable with better maps yet, but it will be sorted in the future. The EZ117K/LH2.2 however can be statically advanced/retarded by turning the distributor as you may know. But what I am about to say may also apply to EZ117K... Well, it would be nice to get the same possibility of statically advancing/retarding the EZ116K as well. And I beleive it is possible. All that is being said below will of course apply to all EZK´s, not only the chipped ones (even though this will have the best maps to alter) or the turbo ones. The NA EZK´s should have the same capabilities. Why advance/retard the EZ116K timing? * Advancing the entire map may be beneficial to power on some occations. For example when driving on high octane gas at the strip or track, when taking advantage of Somender Singh´s groove theory, and/or when you have converted to E85 (like me). * When the EZ116K is chipped it already has a very good map for making power, but unfortunately it is not as smart as the LH2.4 ECU. It adapts a little, but not much. The map is ideal when running 91-93 octane gas but when you want to make some power and go beyond the 100 octane mark you really want to make use of it by advancing the timing, even when not under full boost. * The option of advancing/retarding will be very beneficial when you have raised the compression or if you are using another head (16v perhaps? maybe not ideal but could be made pretty good). * An easy way of retarding the entire map in the EZ116K may be desired when driving the car on bad gas or in very hot weather. And an easy way of advancing the entire map in the EZ116K may be desired when driving on high octane gas or other mods have been done to the engine. This is possible to do if you install a few easy accessible buttons in your car. How to change the statical advance/retard: * The EZ116K has 4 pins in the 25-pin connector called "selector pins" on pin 18, 19, 21 and 25. * The EZ116K also has 2 pins that are internal analog/digital ground on pin 11 and 12. The flywheel sensor is grounded on pin 11 and the knock sensor is grounded on pin 12. They can still be used as common grounds if desired. * By grounding one or more pins you will be able to get -6° to +12° in 3° increments. This I know: * By grounding pin 18 you will get -3° (retard). * By grounding pin 19 you will get -6° (retard). * By grounding pin 18 and 19 you will get +3° (advance). But here is where I need some help from you guys: * I don´t know which of the pins mentioned (or combination of pins) to ground to get the other presets... * How much advance/retard will you get if you ground the other two pins (21 and 25) respectively? * Is it possible to ground more than one pin at the same time to get a specific advance? * The big question is: Which pins do what and how much to the retard/advance??? All the mentioned pins (18, 19, 21, 25) are protected so you won´t get a short-circuit if you do anything wrong. Anyone who wants to try it out? I want to know what grounding all combinations of pins will do? Test if grounding pin 18 and 19 respectively, and grounding pin 18 + 19 will do what I have claimed they would do? Grounding pin 18 + 21? Grounding pin 18 + 25? Grounding pin 18 + 19 + 21? Grounding pin 18 + 19 + 25? Grounding pin 18 + 21 + 25? Grounding pin 18 + 19 + 21 + 25? Grounding pin 19 + 21? Grounding pin 19 + 25? Grounding pin 19 + 21 + 25? Grounding pin 21? Grounding pin 21 + 25? Grounding pin 25? It would really be nice to have a button on the dash where you could choose the ignition advance/retard, don´t you think? Last edited by frpe82; 07-15-2006 at 08:23 PM.. |
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#2 |
Barbie Ken
Join Date: Sep 2004
Location: Norway
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![]() What are the pins called?
I'm counting binary in my mind now....$5 says it's that easy. 4 binary digits equals 16 options.
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#3 |
Board Member
Join Date: Jun 2004
Location: disabled account land
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![]() #12 is the knock sensor ground, #11 is the crank position sensor ground. I'm unsure about the others, as they're not shown on any of the wiring diagrams I'm looking at.
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#4 | |
Guest
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![]() Quote:
Grounding pin 18 Grounding pin 19 Grounding pin 18 + 19? Grounding pin 18 + 21? Grounding pin 18 + 25? Grounding pin 18 + 19 + 21? Grounding pin 18 + 19 + 25? Grounding pin 18 + 21 + 25? Grounding pin 18 + 19 + 21 + 25? Grounding pin 19 + 21? Grounding pin 19 + 25? Grounding pin 19 + 21 + 25? Grounding pin 21? Grounding pin 21 + 25? Grounding pin 25? And no grounded pins. That´s 16. Please try it! And the pins 18, 19, 21 and 25 is not mentioned anywhere. Neither the name or the function. Not mentioned in any circuit diagram at least. |
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#5 |
All idiot, no savant
Join Date: Aug 2004
Location: The Netherlands, Europe
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![]() awesome. So, when u use a chipped EZK on LH 2.4 and you wanna use RON 95 instead of RON 98, thats possible if you use these options? (less timing advance so no pinging?)
EDIT: I just looked at the plug of the EZK in my 240. The empty spots are the ones you are looking for. The number of each pin is visible when you open the connector (3 philips screws) ![]() (1 second exposure time ftw btw) The little connector inserts look familiar. Maybe the ones from the ISO radio connectors or some computer related thingies are the same... Then plug those in, connect a wire to a ground connection and ready.. EDIT2: Just been searching through my piles of wires and connectors. The ISO radio adapters of the newers volvo's use the same little connectors.. ![]()
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240 | 1991 | 345K Km | B230F+T | Cosworth T3 60/63 | M90 | TrueTrack (parked for a few months) dd: 940 | 1992 | B230FB Husaberg FE450 70 degree '12 mx/supermoto swapped Last edited by JW240; 07-16-2006 at 01:46 PM.. |
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#6 |
Turbo, what?
Join Date: May 2004
Location: OR
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![]() Cool...
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Kyle - NLMGG: '91 244 NA DD/Track - General Leif: '71 142 Endurance Racecar - The General's FB page - Oregon Volvo Tuners - Died ![]() |
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#7 |
All idiot, no savant
Join Date: Aug 2004
Location: The Netherlands, Europe
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![]() i now have 4 extra wires sticking out of the EZ box connector. Time to add a couple of switches and find a timing light!
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#8 |
weapon of mass detonation
Join Date: Nov 2002
Location: gloucester Va
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![]() hmm, what about the ez118 box? it would be coll to mess with the timing on the b280 with out going ms.....
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91 940 SE, 119K, GOLD 03 540i M sport 6 gears of go! 200k, White 05 S80 2.5T, RED 09 XC70 3.2L, BLUE 10 335xi, (fun has a price), black 17 expedition El, (short bus), black 85 RX-7 GSL SE(efi'ed), BLACK 76 Suzuki RE5, BLACK |
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#9 |
bigpimpin740t@yahoo.com
Join Date: Mar 2005
Location: Birmingham Al
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![]() I can't belive that no one has done this before, you should delete this thread and build and sell an ezk timing master
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85 744 Turbo F+T big valved531, stg5 cam, msns, m47, sways, bills, 53mm t3/t4 9lb flywheel, dual 044s, 80lbs, npr og |
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#10 |
unbalanced chemical
![]() Join Date: Jun 2002
Location: Apache Junction, AZ
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![]() and how the hell does one even find out that grounding those does anything in the first place? part of a volvo test procedure on something??
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#11 | |
Board Member
Join Date: Nov 2002
Location: Two Up, Two Down
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-Billy Volvoless for the first time since 1990... ![]() 2002 Toyota Avalon XLS (comfy gradma car) 1996 Chevrolet Tahoe LS 2WD (hauls ass) 1990 Mazda Miata (track toy) |
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#12 |
unbalanced chemical
![]() Join Date: Jun 2002
Location: Apache Junction, AZ
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![]() iknow that ... but how does one figure out that in the first place
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#13 | |
Board Member
Join Date: Jan 2005
Location: Norway
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#14 | |
Guest
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And Bosch also has this neat pinout chart with listed functions... I´ve seen it but I don´t have it. I looked at TPC and they don´t mention anything other than pin 18 and 19, and that is common knowledge at the Volvo shops. |
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#15 |
All idiot, no savant
Join Date: Aug 2004
Location: The Netherlands, Europe
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![]() I have the wires added, but i have no timing light...
I'll connect em to some switches and go for a drive first, to see if there is a difference in power... |
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#16 | |
Board Member
Join Date: Apr 2006
Location: Lawrence, KS
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#17 | |
Guest
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-6° -3° +3° +6° +9° +12° And of course, 0° with no pins grounded. |
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#18 |
weapon of mass detonation
Join Date: Nov 2002
Location: gloucester Va
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![]() im willing to be that the 118 box will do the same thing, but ill wait and see. im kinda scared to smoke my icu.....
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#19 | |
Guest
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And I beleive that EZ210K, EZ115K and EZ117K share the same pinout when it comes to pin 18 and 19, but not 21 and 25. |
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#20 | ||
Section 9
Join Date: Nov 2003
Location: Horizons Cave
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#21 | |
Guest
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But the Volvo mechanics/fault-tracers never mention the possibility of advancing the ignition. It seems like they only know about pin 18 and 19 and what they do respectively (-6° and -3°), but not what they can do together, or what they can do in combination with other pins... |
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#22 |
Barbie Ken
Join Date: Sep 2004
Location: Norway
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![]() What's the purpose behind those pins?
My dads '87 Opel Omega had a jumper in the trunk, to select the octane rating of the fuel...I think it was L-Jetronic too. 2.0i. |
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#23 | |
Guest
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The combination of 18+19 and other pins is probably not known by the shops. They only use those pins to stop pinging, never to increase the power and lower the tolerance for bad gas. The Opel/Vauxhall Omega was equipped with an early version of Motronic (ML1.5), and all Motronic 1.x ECU´s has a switch or a jumper setup that can increase/decrease both ignition timing and fuel. Volvo also used those switches/jumpers on the Motronic equipped 740/760 with B230ET. |
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#24 |
Barbie Ken
Join Date: Sep 2004
Location: Norway
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![]() Hmm.....VADIS has no description of those pins...9, 18, 19, 21, 24 and 25 are "blank".
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#25 |
All idiot, no savant
Join Date: Aug 2004
Location: The Netherlands, Europe
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![]() i just drove home (70 miles) with pin 18 and 19 grounded. car ran great, but impossible to tell if it was from the advance. I'll try to go to my volvo mechanic and borrow the timing light..
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