Ignition timing for turbo or supercharged renesis - post your maps
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Boosted Kiwi
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From: Y-cat-o NZ
Ignition timing for turbo or supercharged renesis - post your maps
Firstly I did search and I know there was another comprehensive thread around here on this subject that seems to have disappeared . If someone can find it i'll delete this thread .
The purpose of this thread is to discuss what is working for people and at what boost / whp .
Latest map used for us tunes on 91 octane :as of 22/06/2012
The purpose of this thread is to discuss what is working for people and at what boost / whp .
Latest map used for us tunes on 91 octane :as of 22/06/2012
Last edited by Brettus; Jun 21, 2012 at 05:22 PM.
U-Stink-But-I-♥-U
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From: 12 o'clock on the Beltway.
This is my first iteration of timing. I have only begun to play with this when I had to shut down for a while. I will not but up and running for three weeks as I am out of town next week and the following.
This map is based on load and not MAP. I have not seen a published timing map based on load, so I dont know what is right or wrong on this map.
Feel free to discuss.
This map is based on load and not MAP. I have not seen a published timing map based on load, so I dont know what is right or wrong on this map.
Feel free to discuss.
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Boosted Kiwi
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From: Y-cat-o NZ
This is my first iteration of timing. I have only begun to play with this when I had to shut down for a while. I will not but up and running for three weeks as I am out of town next week and the following.
This map is based on load and not MAP. I have not seen a published timing map based on load, so I dont know what is right or wrong on this map.
Feel free to discuss.
]
This map is based on load and not MAP. I have not seen a published timing map based on load, so I dont know what is right or wrong on this map.
Feel free to discuss.
]
U-Stink-But-I-♥-U
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From: 12 o'clock on the Beltway.
165-170, but was quite rich. In the mid 10s.
I intended the midrange to be very safe until I could get an idea where I was. I have an innovate accelerometer that I intended to use to tune the timing, but I think that is going to go into my Baja. I guess I need to either get a g-tech or try to use the datalogs to figure acceleration.
WAIT! I thought you were running a map based timing map? That is a load based map. What are you using now??
Wish my car was running.
I intended the midrange to be very safe until I could get an idea where I was. I have an innovate accelerometer that I intended to use to tune the timing, but I think that is going to go into my Baja. I guess I need to either get a g-tech or try to use the datalogs to figure acceleration.
WAIT! I thought you were running a map based timing map? That is a load based map. What are you using now??
Wish my car was running.
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Boosted Kiwi
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From: Y-cat-o NZ
Always have run a load based map - I originally had a piggyback that was map based but only used it to modify the tune .
My midrange timing was similar to yours originally but i advanced the timing after discussions with MM - ensureing i ran rich till i got it sorted . My EGTs came down as a result ...
My midrange timing was similar to yours originally but i advanced the timing after discussions with MM - ensureing i ran rich till i got it sorted . My EGTs came down as a result ...
Work man - I don't get my software R&D-ed by me tuning the crap out of my car; I get it by tuning others and having them say nice things about me and my mad programming skillzzzzz yo-g-dogg-hommie.
Hmmmmmm.........
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From: Melbourne, Australia
Brett do you mind if I bring up the issue of EGT's relating to ignition advance in here?
If not, looking at Scanalyser I note only that there is CAT temp. Reckon this would be sufficient?
Cheers
Andrew
If not, looking at Scanalyser I note only that there is CAT temp. Reckon this would be sufficient?
Cheers
Andrew
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Boosted Kiwi
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From: Y-cat-o NZ
The temp reading you get from scanalyser measures the temp at the manifold not the cat . I know this because my cat sensor is removed completely and i still get a reading ......
as i have moved a bunch of stuff around, and the cat temp should have changed, but it did not.
and that is a good thing.
beers
Here are the factory Dwell - and the Dwell Changes I have made to date.
This is why I am prety sure that both the AP and the ProTuner are both not TRULY measuring dwell in MS - since the factory map is way above 5ms.
Since we know the factory ignition is about 3-3.8ms; I just modifyed it by 130-150% and smoothed it some. It works great on PunisherRX8's car.
Also the Yukon coils have an 8ms cap on them - so you will never be able to get them to run longer than that.
Once I get to the Dyno - I'll be able to adjust these some more - the goal is too keep backing the dwell down until I lose some power / get misfires... that will tell me for the car they are on - what is the minimum dwell I can get away with.
This is why I am prety sure that both the AP and the ProTuner are both not TRULY measuring dwell in MS - since the factory map is way above 5ms.
Since we know the factory ignition is about 3-3.8ms; I just modifyed it by 130-150% and smoothed it some. It works great on PunisherRX8's car.
Also the Yukon coils have an 8ms cap on them - so you will never be able to get them to run longer than that.
Once I get to the Dyno - I'll be able to adjust these some more - the goal is too keep backing the dwell down until I lose some power / get misfires... that will tell me for the car they are on - what is the minimum dwell I can get away with.
Last edited by Kane; Apr 25, 2009 at 12:19 PM.
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From: Y-cat-o NZ
From another thread - posting it here for future ref.
I had asked Kane if the factory dwell of 595 = 5.95 ms ...
I had asked Kane if the factory dwell of 595 = 5.95 ms ...
I did too - but some areas made me think.
1) The int-x setting for the factory ignition = 3.0 to 3.8 ms dwell.
2) Jeff scoped the PCM and saw a 3ms signal.
3) 3 - The PCM Troubleshooting manual has some information about the ignition characteristics which seem to indicate the 3-4 ish MS Dwell Times since the entire ignition sequence takes just under 5ms including discharge at idle.
Then look over at the PCM info - and at full voltage at idle we see 1200-1100 ish... so IMO is is a scalar of some kind.
1) The int-x setting for the factory ignition = 3.0 to 3.8 ms dwell.
2) Jeff scoped the PCM and saw a 3ms signal.
3) 3 - The PCM Troubleshooting manual has some information about the ignition characteristics which seem to indicate the 3-4 ish MS Dwell Times since the entire ignition sequence takes just under 5ms including discharge at idle.
Then look over at the PCM info - and at full voltage at idle we see 1200-1100 ish... so IMO is is a scalar of some kind.
That was mean....
Here
Here
In physics, scalar fields can be used to ascribe forces (which are usually vector fields) to a more general scalar field, the gradient of which describes the force.