Cobb AccessPORT Discussion
#2877
The problem is using coils that aren't meant for the rx8 and require adjustment. If the adjustment isn't quite right, you might have random issues pop up. I've already experienced that first hand. No thanks.
The simple solution is to buy coils that work properly for the vehicle.
The simple solution is to buy coils that work properly for the vehicle.
#2878
#2879
Offering multiple sets of calibrations just in case a user has an incompatible bit of aftermarket gear would be insanity.
I will probably have one or two units with me in addition to any pre-orders.
For some people, they work perfectly for a long while.
Its a crap shoot.
#2880
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With our Ignition Solution the factory dwell settings are perfectly adequate for N/A cars. If Mazda did not think dwell was an important table and that it should be adjusted depending on load,rpm and battery voltage they would not have put it in the ecu or adjusted it based on those variables USING FACTORY COILS! Fact is MAZDA varies it quite abit in the stock map. Now, dwell is charge time, more time more spark energy and less is less energy. Use more than you need will gain you nothing and seriously shorten the life of the coil, if you don't run enough you may blow out the spark. Balance is the key for efficient combustion and long coil life. Want to run 230rwhp 2ms is fine, want to run 350rwhp 3.5ms is fine want to go in the 400rwhp range turn it up abit more.
Hope this clears any confusion regarding Dwell, what it is and how using it will maximize efficiency and provide long service life. Scott
#2881
Should a consumer expect an upgraded part to only supply the same or less spark energy as the OEM coils in that range?
Most tuners do not have access to the equipment necessary to compute dwell time for an unknown coil.
Generally, you run with a minimum dwell time and then work your way up if there are misfires.
If your aftermarket supplier does not furnish you with dwell information when you purchase a set of coils, they are doing you an injustice.
#2883
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"Adequate" is an interesting choice of words. If an aftermarket solution is only providing "adequate" spark energy at and above the torque peak, is it an "adequate" solution?
Should a consumer expect an upgraded part to only supply the same or less spark energy as the OEM coils in that range?
Not really.
Most tuners do not have access to the equipment necessary to compute dwell time for an unknown coil.
Generally, you run with a minimum dwell time and then work your way up if there are misfires.
If your aftermarket supplier does not furnish you with dwell information when you purchase a set of coils, they are doing you an injustice.
Should a consumer expect an upgraded part to only supply the same or less spark energy as the OEM coils in that range?
Not really.
Most tuners do not have access to the equipment necessary to compute dwell time for an unknown coil.
Generally, you run with a minimum dwell time and then work your way up if there are misfires.
If your aftermarket supplier does not furnish you with dwell information when you purchase a set of coils, they are doing you an injustice.
In forced induction applications I would suggest increasing the dwell time in the higher RPM's in the factory ECU, mazda starts turning it down. The stock coils as we know are less than great, turn the dwell up at higher RPM and I doubt they will hang in there for very long. Actually when I built the Interceptor-X in 2005 I did try ramping up the dwell time and cooked a few myself.
I would say your right about most tuners setting the dwell that way, it's a simple and effective way to do it.
I do provide that info and recommend 3.5 ms for forced induction applications.
#2886
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#2887
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#2888
I would not have purchased the maz ignition if the dwell setting for FI application is needed was addressed in the begining.
Last edited by Psychofox; 06-01-2008 at 06:40 PM.
#2889
I would think that you would be more inclined to purchase an upgrade product that is better documented than one where there are "mystery" specs.
I am usually more impressed by products that contain complete specs or have spec sources available.
Certainly, when a device only has one or two variables that need to be addressed for full functionality, I'd expect them to be presented right off the bat.
Especially on a device that was as fully tested in the field as the MazSport ignition solution.
#2891
That seems a little backwards.
I would think that you would be more inclined to purchase an upgrade product that is better documented than one where there are "mystery" specs.
I am usually more impressed by products that contain complete specs or have spec sources available.
Certainly, when a device only has one or two variables that need to be addressed for full functionality, I'd expect them to be presented right off the bat.
Especially on a device that was as fully tested in the field as the MazSport ignition solution.
I would think that you would be more inclined to purchase an upgrade product that is better documented than one where there are "mystery" specs.
I am usually more impressed by products that contain complete specs or have spec sources available.
Certainly, when a device only has one or two variables that need to be addressed for full functionality, I'd expect them to be presented right off the bat.
Especially on a device that was as fully tested in the field as the MazSport ignition solution.
#2894
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Psycofox, during the tuning process you or your tuner are making adjustments to various maps to accomplish your goal. We are talking about an adjustment here, thats it. The Ignition Solution has the flexibility to not only provide strong spark with the factory Mazda settings but also has the headroom to provide spark energy for 380rwhp by simply adjusting numbers in a table!
#2895
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#2896
Psycofox, during the tuning process you or your tuner are making adjustments to various maps to accomplish your goal. We are talking about an adjustment here, thats it. The Ignition Solution has the flexibility to not only provide strong spark with the factory Mazda settings but also has the headroom to provide spark energy for 380rwhp by simply adjusting numbers in a table!
Not everyone is using the Int-X.
It wasn't even available in the AP until Christian asked me about it.
Since there are several coil choices that don't require an individual dwell adjustment to be utilized with the OE PCM's settings, it just didn't seem economical to include a one-off, supplier-specific adjustment.
Especially when there are so many other features that need development time on the AP.
It was entirely in deference to Scott that the dwell table development was added instead of APV/SSV.
#2897
#2898
#2899
Finally Boosted!!!!!!!
![Post](https://www.rx8club.com/images/icons/icon1.gif)
You can also make Dwell changes in the HKS EMS which has an RX8 specific harness. I believe most EMS's have the ability to change the Dwell as it is common to adjust it for various changes made during the upgrade/tuning process regardless of application.
#2900
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![Question](https://www.rx8club.com/images/icons/icon5.gif)
I have a question. Let's say I have the AP installed with one of MM's tunes. For some reason my AP is lost, stolen, or broken. Am I screwed since the stock flash is lost? How would I get a stock flash at that point? Just curious