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Please post your dwell settings here!

 
Old 12-28-2009, 06:19 PM
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Default Please post your dwell settings here!

For those of you running Adaptronic, could you please post your dwell settings using my entry as a template:

Car: 1999 (NBA)
Coils: original
Dwell: 2100us
Time on this setup: 3 months / 3,000 miles
Coil problems: none

I know some of you are running up to 5000us dwell. It will be good to have a bit of a database happening to see if the higher dwell time contributes to early failures.

Thanks!
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Old 12-28-2009, 06:41 PM
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Running 5000....Don't even know why. Came with the map. I'll have to change it.

As stupid as this sounds, I still have no idea WTF dwell settings do.
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Old 12-28-2009, 07:28 PM
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dwell = charge time for the coil pack before it sparks... Too little = weak spark. Too much = hot coil.

Less voltage requires greater dwell time and vice versa.

2500 for me right now. Seems to be running well. I think somewhere around 3000 is optimal for stock coil packs at around 14.5 volts, I was running that last week before my last coil pack croaked. I turned it down a bit so I could drive it a little bit if I had too, not sure how much difference it made 'cause the pack would still crap out when it got warm.

It's more complicated when you have to play with a spinning distributor, electronic ignition is quite a bit easier, just plug in the number you want.

I'm no pro, but have to tune my wife's '69 beetle from time to time. Good learning experience for sure...
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Old 12-28-2009, 07:32 PM
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Interesting. Thanx for the info. I'm going to lower my dwell setting to the 2-3k area now
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Old 12-29-2009, 03:56 PM
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Let us know if the car seems any different after the change.
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Old 12-29-2009, 04:40 PM
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Car: 2001 (NBB)
Coils: original
Dwell: 3500us
Time on this setup: ~6 months / ~5k miles
Coil problems: none
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Old 12-30-2009, 06:28 AM
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Ok are you guys still back on the old wari? I just upgraded to 2.0 and everything is so different. LOL
I know I sound retarded but just wondering.

Last edited by 18psi; 12-30-2009 at 06:52 AM.
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Old 12-30-2009, 06:41 AM
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Double post

Last edited by 18psi; 12-30-2009 at 06:52 AM.
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Old 12-30-2009, 10:35 AM
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Originally Posted by 18psi View Post
Ok are you guys still back on the old wari? I just upgraded to 2.0 and everything is so different. LOL
I know I sound retarded but just wondering.
select custom engine type from the triggering settings
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Old 01-07-2010, 01:32 PM
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Originally Posted by ismael_pt View Post
select custom engine type from the triggering settings
so going to Wari 2.0. should you leave it at default MX-5 (I believe sub category is sequential injection) ? but then what is the dwell setting then ?

how you should always pick "custom engine type" ?

thanks.
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Old 01-07-2010, 04:08 PM
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Awesome, just been looking for details like this! Heres mine:

Car: 2002 (NBB)
Coils: original
Dwell: 2500us
Time on this setup: 12 months / 5,000 miles
Coil problems: none
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Old 01-07-2010, 04:21 PM
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Originally Posted by bellwilliam View Post
so going to Wari 2.0. should you leave it at default MX-5 (I believe sub category is sequential injection) ? but then what is the dwell setting then ?
Dwell times for each engine type as setup by WARI:

BP NB Wasted Spark - 2100us
BP NA Coil Packs - 3000us
B6 NA Wasted Spark - 5000us
B5 DOHC Wasted Spark - 3000us
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Old 01-07-2010, 04:55 PM
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I've got NB, but the default map downloaded has 5000us. I guess I will try 2100us.
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Old 01-07-2010, 05:10 PM
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:scratches head:
Why would you intentionally run dwell substantially less than factory?

Mazda, who spent (tens? hundreds?) millions of dollars designing the factory management system runs 5-5.5 ms dwell from the first NA6 all the way through the NB1. If you were constantly beating the snot out of the car (read high rpm all the time, 6k+), then maybe I'd lower it down to 4-4.5ms, just to give some recovery period. But running 2-3 ms is plain silly. Hot spark = good.

I don't know what dwell the NB2 runs.
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Old 01-07-2010, 05:26 PM
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Where did you find the stock dwell settings? I've been looking for them for the NBB and assumed it was 2100us as that is what it was set to in WARI, so 2500us would be an increase over that but dont want to go too high as the coil packs are meant to be weak and easily blown.
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Old 01-15-2010, 10:26 PM
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Originally Posted by 18psi View Post
Interesting. Thanx for the info. I'm going to lower my dwell setting to the 2-3k area now
Ok so very late update but I've been insantely busy lately so haven't had time to fool with the miater.


So last night I lowered my dwell from 5000 to 2500 and the amps from 1.9 to .9 and the car RAN LIKE ABSOLUTE ****.

I mean the idle was ridiculously rough, lean as ****, and completely horrible.

Richening up the map at idle or doing ANYTHING was completely useless.

So I turned it back to 5000 and 1.9amps and it runs great again. A bit rich at idle now, but I'll dial that out.

So yeah..I guess my car doesn't like me to touch the dwell settings
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Old 01-15-2010, 10:32 PM
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What if you change just the dwell?
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Old 01-16-2010, 12:36 AM
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if I change just dwell it gets a bit worse but not as drastic. I guess I could bump it down to 4000 or so without any major worsening in idle, but that's about it.
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Old 01-16-2010, 07:49 AM
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Plain and simple. Do not lower your dwell.
5ms should be fine for a 99/00 with stock coils on your typical street car.
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Old 01-16-2010, 10:47 AM
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Originally Posted by Ben View Post
Plain and simple. Do not lower your dwell.
5ms should be fine for a 99/00 with stock coils on your typical street car.
5ms running dwell?

I'm running the PnP map from DIYAutotune on my 98 UK NB (Megasquirt but doesn't matter). It's on stock coils and they specify 3.5ms running, 8.0ms cranking, and 1.0ms discharge period.

Im interested in bumping up my running dwell if Mazdas ECU runs at 5ms! Have you any proof or datasheets on this?

Cheers,
Craig
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