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/

 

wow,,

like 1yr. after i hinted that it might be a good idea.. it happens...

nice that we have an ems area... win / win..

beers

 

The more I read about how complex the other EMS options are the happier I am with this one .......

 

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.

 

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.

 

man,

i was very confused...

here is hint to anyone out there.

https://www.rx8club.com/showthread.p...9&page=2&pp=15

beers

 

beers

 

ha ha - sorry about the confusion - just didn't want to hijack the other thread .

 

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

 

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 .

 

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 .

 

when you go through the gears does your foot ever come off throttle between shifts?

 

yes - would not be a good look if it didn't .......

 

is you ltft stable? and what is it?

beers

 

yes its stable - settles around - 0.8 but in this hotter weather its up around -3.2 .
LTFT is not the issue here .

 

it must be because this trans would have blown up otherise, it can't take hard shifts for long let alone that kind of abuse