Power mod EMS
12-07-2006, 03:53 PM
#1
Power mod EMS
Seeing the forum is now generalised here is a link to the thread on the Powermod
I've been using it for about 4 months now .
Only negative I have discovered is that the software that controls the AUX. outputs is not that good. IE sometimes works - sometimes does not .
Also , I think the unit has limitations in that it does not directly control the coils.
I would like ability to increase the rev. limit & disable the speed limiter .
Other than these minor drawbacks I think the unit is more user friendly than any of the other alternatives I've seen on this site. However I would probably choose the RB flash if I was in the US & staying N/A .
https://www.rx8club.com/series-i-aftermarket-performance-modifications-23/power-mod-ems-n-tune-installed-95601/
I've been using it for about 4 months now .
Only negative I have discovered is that the software that controls the AUX. outputs is not that good. IE sometimes works - sometimes does not .
Also , I think the unit has limitations in that it does not directly control the coils.
I would like ability to increase the rev. limit & disable the speed limiter .
Other than these minor drawbacks I think the unit is more user friendly than any of the other alternatives I've seen on this site. However I would probably choose the RB flash if I was in the US & staying N/A .
https://www.rx8club.com/series-i-aftermarket-performance-modifications-23/power-mod-ems-n-tune-installed-95601/
02-24-2007, 11:43 PM
#4
My dyno charts show some good gains - however after months of testing & dicking around with tuning i've come to a very sad conclusion : 
Real world actual acceleration improvement (ie 1/4mile runs etc ) from this mod is virtually un-noticeable from stock . I don't make this statement lightly - I've tried really hard to get some conclusive results to prove otherwise .
I do see some improvements below 6000 rpm (which oddly don't match up with what I see on the dyno) but this is below the range used for full throttle acceleration runs.
What first had me in two minds was the fact that try as i might I could not get a better 1/4 mile time with the tune vs without . So I did several runs using scanalyser to see if I could see what was happening when you accelerate flat out in 2nd through 3rd & found no improvements whatsoever
This is in contradiction to earlier runs i've done in 3rd gear only which do show an improvement . Only explanation I can see for this is that under full acceleration through the gears the AFRs & timing vary as compared to just accelerating from low rpm through to redline in 3rd gear.
Real world actual acceleration improvement (ie 1/4mile runs etc ) from this mod is virtually un-noticeable from stock . I don't make this statement lightly - I've tried really hard to get some conclusive results to prove otherwise .
I do see some improvements below 6000 rpm (which oddly don't match up with what I see on the dyno) but this is below the range used for full throttle acceleration runs.
What first had me in two minds was the fact that try as i might I could not get a better 1/4 mile time with the tune vs without . So I did several runs using scanalyser to see if I could see what was happening when you accelerate flat out in 2nd through 3rd & found no improvements whatsoever
This is in contradiction to earlier runs i've done in 3rd gear only which do show an improvement . Only explanation I can see for this is that under full acceleration through the gears the AFRs & timing vary as compared to just accelerating from low rpm through to redline in 3rd gear.
Last edited by Brettus; 02-24-2007 at 11:54 PM.
02-25-2007, 11:08 PM
#5
Originally Posted by swoope
wow,
trap speed at 100mph... i have to disagree your ecu is doing something for you...
our mods are close.. highest trap speed i have seen is 97.5 and i have to admit to a bit of an elevation change. in favor of speed..
beers
trap speed at 100mph... i have to disagree your ecu is doing something for you...
our mods are close.. highest trap speed i have seen is 97.5 and i have to admit to a bit of an elevation change. in favor of speed..
beers
When you accelerate through the gears the AFRS are different to if you just hold it in gear & accelerate from low rpm to redline . Not sure but I think this is having an overall effect on acceleration.
Last edited by Brettus; 02-25-2007 at 11:11 PM.
02-25-2007, 11:32 PM
#9
cool,
was this with gtech or data logging??? still that is silly good..
and as a mention. i think the best way you can judge ecu gains is in 3rd. and most of the ecu gains are going to be from 4k to 6.5k. and they are big..
i can find the chart if i have to...
beers
was this with gtech or data logging??? still that is silly good..
and as a mention. i think the best way you can judge ecu gains is in 3rd. and most of the ecu gains are going to be from 4k to 6.5k. and they are big..
i can find the chart if i have to...
beers
02-25-2007, 11:36 PM
#10
Here is a chart that illustrates what I'm talking about .
shows acceleration through second & third gears - gear change speed does affect this but note the slope of the lines which denote acceleration in each gear .
Also shows how the afrs differ in each gear .
For the record - I did 6 runs total & the results were consistent . I also kept intake air temp & coolant temp within a few degrees for each run.
The second chart shows the difference if you just do a pull in third gear to the redline - this does show some gains from the tune .
shows acceleration through second & third gears - gear change speed does affect this but note the slope of the lines which denote acceleration in each gear .
Also shows how the afrs differ in each gear .
For the record - I did 6 runs total & the results were consistent . I also kept intake air temp & coolant temp within a few degrees for each run.
The second chart shows the difference if you just do a pull in third gear to the redline - this does show some gains from the tune .
Last edited by Brettus; 04-28-2013 at 04:10 PM.
03-08-2007, 02:26 PM
#11
The thing I can't understand is that the 'in gear' chart sows a definite gain whereas the 'through the gears' chart does not .
What I have noticed is that AFRs are less steady going through the gears vs 'in gear'.
In gear is similar to a dyno pull whereas through the gears the AFRs seem to be all over the place.
Note : I have a higher 3rd gear ratio than you - that is why I come in at just over 6k in the 2-3 shift even though I went to just under 9k in 2nd .
What I have noticed is that AFRs are less steady going through the gears vs 'in gear'.
In gear is similar to a dyno pull whereas through the gears the AFRs seem to be all over the place.
Note : I have a higher 3rd gear ratio than you - that is why I come in at just over 6k in the 2-3 shift even though I went to just under 9k in 2nd .
03-09-2007, 02:37 AM
#16
Originally Posted by turbosa22c
when you go through the gears does your foot ever come off throttle between shifts?
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