out of curiousity, i was wondering who is running his ecu. i got a chip with 5300 vtec and 9100 redline. it seems to idle rough sometimes, but i can tell it pulls a little harder. anyone here have problems with the ecu w/o tuning it?

 

nope.. mine runs strong

 

There are a couple of threads archived regarding issues encountered when running an OBD1 ecu in an OBD2 vehicle.

It's wise to have fuel tuned when using Kenji ecu.

Kenji ecu

 

where can i purchase a kenji ecu?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by black cx &raquo;</TD></TR><TR><TD CLASS="quote">where can i purchase a kenji ecu?</TD></TR></TABLE>

https://honda-tech.com/zerouser...=2322

 

The problem with this tune and any other "standard" tune such as a SPoom, Skunk or Jun tune is that the program will run differently in every car as no car is exactly the same. So, for some it may be fine but for others with different modifications it will run undesirably.

As said before, always have some sort of piggy back to further tune your fuel/ignition parameters.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by C-speed Ricer &raquo;</TD></TR><TR><TD CLASS="quote">The problem with this tune and any other "standard" tune such as a SPoom, Skunk or Jun tune is that the program will run differently in every car as no car is exactly the same. So, for some it may be fine but for others with different modifications it will run undesirably.

As said before, always have some sort of piggy back to further tune your fuel/ignition parameters. </TD></TR></TABLE>

like hondata?

 

or VAFC with a good tune-

 

I have a vafc2 for sale if anyone is interested......also im looking to trade my kenji chipped p28 w/ obd1 jumper harness for a stock itr ecu.

 

Although hondata is considered a "piggy-back" it takes full control of your fuel and ignition parameters so that would be all you'd need. (shameless plug: I sell Hondata if you're interested.) Use a VAFC if you decided to run a chipped ecu.

 

The idle issue can easily be solved by adjusting the idle adjustment screw on the throttle body.

Email me if you have any questions. Thanks.

-kenji

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mtber &raquo;</TD></TR><TR><TD CLASS="quote">Look into a better basemap that doesnt dump excessive fuel where it is not needed. I.e. idle, partial throttle etc.. </TD></TR></TABLE>

Badmouthing another sponser isn't exactly the best way to handle stuff.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by splitime &raquo;</TD></TR><TR><TD CLASS="quote">

Badmouthing another sponser isn't exactly the best way to handle stuff. </TD></TR></TABLE>

I concur.

 

splitime and Mugen Mike,

Great minds do think alike

-kenji

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mtber &raquo;</TD></TR><TR><TD CLASS="quote">Look into a better basemap that doesnt dump excessive fuel where it is not needed. I.e. idle, partial throttle etc....</TD></TR></TABLE>

Could you please tell me exactly what you meant by this?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by splitime &raquo;</TD></TR><TR><TD CLASS="quote">

Badmouthing another sponser isn't exactly the best way to handle stuff. </TD></TR></TABLE>it my be badmouthing but he speaks the truth. Kenji does great ECUs but he could use some improvement on his basemaps. For example, my friend got a kenji ecu for a B16 and was getting like 20mpg, so i read the chip and it was richer then maps for a R (B18C)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by George Knighton &raquo;</TD></TR><TR><TD CLASS="quote">

Could you please tell me exactly what you meant by this?</TD></TR></TABLE>kenji's maps add alot of fuel all the way across the board making the car run really rich no matter what RPM or throttle range your in

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by onePOINTsix &raquo;</TD></TR><TR><TD CLASS="quote">kenji's maps add alot of fuel all the way across the board making the car run really rich no matter what RPM or throttle range your in</TD></TR></TABLE>

Do you think it's to add a safety factor? Why would he do that?

I know you can get more HP by leaning it out, but isn't that more dangerous than what he's doing?

I dunno. Since he's selling his product to the relatively uninitiated and people who do not want to invest in a fully user tunable system, perhaps it's just the safer thing to do.

 

onePOINTsix,

Please PM me your friend's email address so I can contact him and give him a new chip for free. That does not sound right and I would like a chance to correct it.

Thanks.

-kenji

 

Hondata, Crome, Uberdata, Neptune are not considered a piggy backs.

From pgmfi:
Piggy Back controllers allow stock ECUs to do things that they normally can't do, like run larger injectors or deal with boost. Remember that piggyback controllers work by altering sensor signals before they get to the ECU.

Most of the time, the primary signal being messed with is the Map Sensor. This is critically important in a Speed Density car. The Map Sensor is used by the ECU to guess how much air is going into the car, and therefore how much fuel to supply in order to match airflow. When you "lean" out a car with an AFC, you are simply decreasing the Map Sensor signal - the ECU responds to the decrease in manifold pressure by supplying less fuel. When you "richen" a car with an AFC, you are simply increasing the Map Sensor signal - the ECU responds to the increase in manifold pressure by supplying less fuel.

The change in fueling happens for a reason: if you look at a fuel table, Map Sensor values correspond with columns. When you increase or decrease the signal from the Map Sensor, you are simply making the ECU use a different column than it originally would have used. (see Understanding Maps if you need some help understanding reading Fuel and Ign tables)

But wait, isn't the Map Sensor used for determining ignition requirements too? When you "lean" out a car with a Piggy Back, you also in all likelyhood advanced timing. When you "richen" a car with a Piggy Back, you also in all likelyhood retarded timing. Look at trends horizontally (as MAP changes) in an ignition table, and you will see why this happens. This helps explain why so many boosted cars running on the "AFC hack" have issues due to excessive ignition advance.

The bottom line: Piggy Back Controllers suck because you cannot independently adjust fuel and ignition. Any changes to fueling will produce a change in ignition too, and often this is undesirable.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mtber &raquo;</TD></TR><TR><TD CLASS="quote"> When you "lean" out a car with an AFC, you are simply decreasing the Map Sensor signal - the ECU responds to the decrease in manifold pressure by supplying less fuel.

When you "richen" a car with an AFC, you are simply increasing the Map Sensor signal - the ECU responds to the increase in manifold pressure by supplying less fuel. </TD></TR></TABLE>

Things like this make people like ME wonder ...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mtber &raquo;</TD></TR><TR><TD CLASS="quote">The reply was posted before the other sponsor was on HT as a sponsor.
I did not intend the post as a negative answer, I was simply providing facts to answer the question.</TD></TR></TABLE>

Huh? This thread is only about 2 weeks old. To my knowledge, Kenji has been a sponsor for quite a while.

Feel free to add your input to the thread, but don't use it as an attempt to badmouth another sponsor with the intent of gaining more business.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kenji &raquo;</TD></TR><TR><TD CLASS="quote">onePOINTsix,

Please PM me your friend's email address so I can contact him and give him a new chip for free. That does not sound right and I would like a chance to correct it.

Thanks.

-kenji</TD></TR></TABLE>

 

I had a kenji p28 with the skunk2 burn and it was great! I had it in a b16a2 with skunk2 cams so naturally it needed some tuning, but with the vafc everything worked out beautiful! Like it was said earlier, every car is different and with different modifications require certain tuning.

Kenji pretty much over nighted the ecu to me so I would have it in time for my dyno session! Thats GREAT service if you ask me!

Kenji =

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kenji &raquo;</TD></TR><TR><TD CLASS="quote">onePOINTsix,

Please PM me your friend's email address so I can contact him and give him a new chip for free. That does not sound right and I would like a chance to correct it.

Thanks.

-kenji</TD></TR></TABLE>not a problem it'll be in your PM. Glad your willing to help out and slove the problem