Yep, key'ing the car on and off was a major pita on the dyno. Time consuming.

Oh yah, now I remember! It wasn't the live tuning (or lack thereof). The problem I had was updating with the engine running. It was hit or miss. Sometimes the changes wouldn't "take", and I had to cycle the power.

 

I'm looking to get my car tuned this spring (AP1, SoS kit with 10-11lb pulley nothing to crazy) and have been researching on and off in the past pretty much deciding on going with K-Pro. At the time infinity was still around $2500 and I really didn't look into it because it was a newer product with not much review yet. I now see the price has dropped and from the little bit of reading I did I've read good things about infinity. I'm mainly looking for just great drivability. I've. Always been impressed with Hondata on civics I've owned... But I would much rather not go about tearing apart timing cover etc to install the neccessary parts needed for the Kpro install.

Thanks in advance guys

 

Unless you require OBD2 for emissions, then Infinity all the way. Your car should drive at least as good, if not better than Kpro (assuming your tuner knows what he's doing and spent the time on it).

 

^ Yes, I have both ECUs and only put the kpro back in for emissions day. Everything just feels better with the Infinity

 

Seems like for the S2K, the infinity is the way to go. Not surprising to me, it allows for limitless tuning and is easily installed, programmed, and uninstalled.

http://store.excelerateperformance.c...s/g-67288.aspx

 

Is there a list of the parts—sensors, cables, etc.—in addition to the Infinity and its plug and play harness that are needed. I imagine a UEGO is needed. What about coolant and oil temp? Oil pressure? Doesn't the Infinity have automatic restrictions based on those values?

 

Aem Series 2 Plug & Play EMS

Hi guys just letting you know I have an AEM for sale. Item was used for only 2 months on my boosted s2. It is like brand new.
Product has NOTbeen tampered with and none of the seals are broken.
Still has its warranty. Comes with USB cable. Does not come with box.
If you have any question you can give me a call at 305-877-4889.


AEM V2 For Sale

 

Wrong place to do this, this will be deleted

 

Apologies for the long post...

Full disclosure: I just ordered a Hondata K-Pro4 for my 2002 AP1 and your claims of AEM Infinity's superiority gave me some pause. So I did some research (but I'm still _very_ new to all this and could be drawing the wrong conclusions...)

So your assertion that the AEM Infinity has "TRUE VE fueling based on the ideal gas law" (implying Hondata doesn't) could use some clarification. Is Hondata not doing the same thing? (I think both you and AEM are saying "No Hondata is not").

AEM doesn't get into such details (ideal gas law) with their overview, instead they say:

"One of the main great features of the AEM Infinity-6 is its 'Airflow Model Based Calculations'
Infinity’s airflow model based systems greatly reduce the amount of time it takes to set up and tune an engine by eliminating many of the lookup and trim tables (correction tables) necessary in previous generation ECUs. The Infinity’s airflow based, or volumetric efficiency (VE) based models calculate an engine’s requirements in real time based on an advanced algorithm that has various modes for calculating air flow. Once the user inputs an engine’s basic parameters (displacement, cylinders, ignition type, and firing order) and methods of calculation for airflow and ignition they can begin setting the engine’s VE table in the software."

I guess "advanced algorithm" translates to "ideal gas law"? (No wonder the NFL front office didn't know about the ideal gas law.. it being so advanced and all).

Anyway, I also found that Hondata has this "Engine control unit using speed density conversion" patent:
http://www.google.com/patents/US20130319377

Reading that Hondata patent was very informative. But I'm still not completely confident Hondata has the "advanced algorithm" that AEM Infinity does...

From Hondata's patent does get into great detail:
"The present invention can be used to modify an existing ECU from a mass flow to a speed density system. Speed density is less effected by pulsations in the air flow, which lead to more accurate fuel injection determination and better performance. In order to change the operation of the ECU from mass flow to speed density, the ECU logic must be altered. First, volumetric efficiency tables with manifold pressure and engine speed indexes are added to the ECU program data. Intake air temperature compensation tables are also added to the ECU program data. During the operation of the ECU, the existing cylinder air mass to injector duration ECU code execution process is interrupted so that a new alternate program code routine is called rather than the cylinder air mass to injector duration subroutine. In one preferred embodiment, the alternate routine determines if the mass flow or speed density lookup should be performed. If using the customary mass flow, the program execution resumes with the normal cylinder air mass to injector duration subroutine. However, if the routine determines that the speed density is called for, a new subroutine is called that performs the VE table lookup and air temperature compensation, then resumes program execution at the point where the mass flow injector duration subroutine would normally return."

All in all, I have to say Hondata doesn't appear to be lacking in this technology. Could be that the AEM Infinity hardware _is_ faster than the Hondata K-Pro4 but I find it hard to believe the speed you're observing with AEM Infinity has anything to do with their "advanced algorithm" (*cough* "Ideal gas law" *cough*).

Would be great if the member (Chitoki) who has both K-pro4 and AEM Infinity could elaborate on how he determined his s2000 to perform better with AEM Infinity. Butt-dyno?

 

Kpro allows limited reprogramming of the stock ecu. No one really knows exactly what all goes on in there, this is why the "units" in the fuel maps are basically arbitrary. When the map says 1000, i have no idea what that means.. 1000 of what, no one knows, i just know that 1000 is 2x as much as 500.

The fueling strategy is really on part of it. its the 1000 other things infinity can do that kpro cant that make it better. Its the fact that if I put 10 in the ignition map I know i'll get 10 and I can see everything that changes it as well as tune those things.

I do know that oem honda ecu's do not use ve, they are all time based with corrections. aem v1 and v2 are also time based. Time based means the fuel maps tell the ecu how long to open the injector, this is why all of those also have coolant and air temp correction tables. This is why you dont see coolant and air temp trim tables in the infinity. You have a charge temp blend table and thats it.

If you want to spend a boat load of money on an ecu with fewer features and crappy support kpro is the ecu for you. For the same money and a ton less work you can have an infinity setup with lambda sensor, fuel pressure sensor, oil pressure sensor, flex fuel sensor and do way more stuff with it.