If you go to Active's web site they claim that their ecu for X5m/X6m delivers an increase of 86rwp and 117lbs of torque, for $1500. I've never seen such large gains. Other ecu companys claim about 50hp increase.. Any comments. Thanks
Thats a very good point. From the business standpoint, it seems advantageous for them to posting the highest gain at a particular RPM rather than the little/no gain at peak RPM. Moreover, it may also be that in tuning the X5M, there actually aren't any gains to be made in the upper band. So why publish/advertise their tunes at "+10whp gains" when, in their eyes, the real gains are in the midrange. They probably would gain no business. What they should really publish (not sure if they are doing it now or not) is to state something like "gained 50whp @ xxxx RPM."With the ESS tune, the increase in power at the mid-range is perfect. It has made it even more drivable. The concern that I was stating is how they claim their horsepower. If ESS say that they have a gain of 50hp (since I do not have a chart for ESS I do not know where they are stating there gain is from) but they are measuring from max HP (stock) to max HP (tuned). Then AA states an 86hp gain but they are picking the RPM that produces the biggest gain. How do you really compare these two claims.
If you look at this dyno chart:I still don't understand why the AA produces so much more power!!
I have the ESS tune for my X5M. It was done by IND and I am very happy. I am also concerned/confused at the vast range in claims made by tuners about the HP gains for the X5M. I posted this on xoutpost.com and have not received an answer.
Here are both dynos from Active (top graph and chart) and ESS (bottom graph). I know it is hard to compare data from different dynos. Is there someone out there who can help interpret this data. To me (someone with almost zero knowledge of dynos) it appears that there is not much of an overall horsepower gain at the top end. But looks the all of Active's gains come around 4000 RPM. Thoughts?
I bought the ESS tune thru IND. The overall drivability of the car is fantastic. There is a significant increase in power right smack in the mid of the power band. Keep the tranny in “D” and the “M” button off and it is docile enough for my mom to drive (of course, when she drove it she was doing 75 in a 30 mph). <?xml:namespace prefix = o ns = "urn:schemas-microsoft-comfficeffice" /><o></o>
Put it in sport and hit the “M” button and it is downright nasty. There is just something inherently wrong with a +5000lbs truck this fast that makes it so right.<o></o>
The customer service from both ESS and IND are unmatched. You cannot go wrong with either.<o></o>