Before we get into it, I’d like to thank Imran (Legend4life) for getting this whole thing started and helping me start out mine. I'd also like to thank Ken- yup you were right. (Kenso) and Matt (Sr5guy) for putting up with my questions and concerns.
Forevralegend (Erik) joined me today for what was a monumental day towards all Legends bright and open future of major modifications including forced induction.
The NSX AEM EMS is currently running my car!
With that said, IMO It’s been 90% street tuned. A 1 and a half hour of drive home from my tuner (Midnight Performance) in Sacramento, CA gives me this confidence. We spent about 5 hrs tuning with moderate breaks and it gained a bit more power all over the power band, along with a much smoother driving experience.
My prior best dyno peaks from two separate dynos were 228WHP and 224LBFT. The best together was WHP 225 WTQ224.
Tuned under the EMS the Peaks don’t change dramatically (best separate dynos WHP227-WTQ229), but I’ll take the increase in TQ.
Looking within the powerband, from 3k all the way out to 6k there’s an 5-10TQ increase. Add to that very clean power delivery and almost perfect A/F as shown in the dyno below.
I’ll let Erik chime in as far as a third party review.
What’s it take to convert over to the EMS?
Not a whole lot besides tuning. You can buy wire harness extension; it’s handy but not necessary from Science of speed. Buy an NSX EMS 1002, have a fast laptop and a good serial to USB adapter. Load up latest versions 1.19 NSX cal.
Connect the EMS, square away laptop communications config to the EMS (ignition power needs to be on) and configure the TPS sensor. Pull up the fuel map and adjust the bottom-left KPA 5 rows up and 8 rows across with 3.00. This should start the Legend right up.
Do not drive the car like this.
Idle should be anywhere from 800-2000 at this point and the rest of the map needs to be tuned specifically to your engine
by an experienced tuner. Don’t make the mistake of driving on an untuned EMS or else you may risk your engines life. Don’t say I didn’t warn you.
Take to your nearest experienced tuner and have them tune the rest out.
Wideband is a must.
It’s really that simple.
In the coming days I will post my Calibration file here for the community.
It cost me lots of money in total , but as I’ve said before we are all here working together. My tune in no way represents your Legends. It will still need to be tuned, just may say all of you some paying time.
Again don’t go driving on it until its fully fine tuned for your engine.
I will be adding to this initial post. Pictures, screenshots and any thing else I can add to make this a reality for all of you.
With all the many incredible features packed away in the EMS, this is it boys, this is the future of the Legend as we all know it.
Before:
After:
*****UPDATE********
I forgot to mention that with the EMS the fuel pump will stay on at 2nd click ignition. The stock legend ecu will prime the fuel pump then switch off, the EMS will keep it on continuously. This is due to the fact the NSX uses a seperate fuel relay while the Legend incorporates its ignition and fuel together into what we call the "main relay".
The fix would be to convert over i assume.
It doesnt pose any problem as long as you dont have it on for a long time. When i was testing and didnt need to start the car, I would pull the FP 20amp fuse under the dash.
VIDEO*****
Just set my 2step revlimter-As I said, the EMS has a boat load of features.
Right click and save target as.
http://www.2slik4u.com/video/movies/ems/2step.MOV
Attached zipped cal files:
NSX startup cal that will start the Legend,
but is not tuned for the legend.
My first tuned EMS cal at the time. I have many more that have been fine tuned since this, but this is the best starting point. Consider this the only Legend base map cal.
USE at own RISK! updated 3/5/2007
~Dv8