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Honda k series tuner help needed

Road Tuning

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hello im an upcoming tuner, i just started my k20z3 integra and was looking to tune it im more than half way done with the tuning class but im having a little confusions. I just got my car to idle at normal rpm(or at least i think). I am running k20a2 base map on it from hondata. now I understand the fuel and ignition tables but what do i do with the cam angle tables? how do i tune those. also i will be road tuning to start off with i will be buying one of those knock detectors to be safe. but when im tuning ignition can one of you give a detailed description as to what to do. how do i focus on a certain area in the map.

also there is is a low and high for both ignition and the afr do i tune those the same? there is also 0-50 degrees of cam angle how do i in-cooperate all of this

You've really jumped in the deep end unfortunately as the Honda K series engine is quite advanced and tuning via Hondata is effective but quite complex. The biggest issue that you'll face is that it's not possible to accurately map the cam timing on the road as the changes you're likely to see are going to be very small. This part really needs to be done on a dyno.

In short the Honda ECU contains a set of ignition and fuel maps for the low VTEC and high VTEC operating areas. Beyond this they also have 6 maps for high cam and low cam for both fuel and ignition - One every 10 degrees of cam angle between 0 and 50 deg. The ECU will track and interpolate between these maps based on the current cam angle (defined by the cam angle target table) and whether or not the VTEC is engaged. When you're making changes to the fuel or ignition timing you need to be aware of where the engine is operating so that you can make changes to the correct map. An alternative is to tick the little box that applies any change you make to all the maps.

The usual way of tuning the K series engine is to lock the cam timing at each point and perform a run on the dyno (eg runs at 0,10,20,30,40 and 50 deg cam timing). You'll end up with a series of power plots that cross and these are the rpm points where you want to swap from one cam angle to the other in order to make sure you're always producing peak power/torque. Understandably this is much harder to achieve on the road. You can also perform runs with the VTEC point set quite low (say 3000 rpm) and then high (7000 rpm) and there will be a clear cross over point which is where the VTEC should be set - Again hard to optimise accurately without a dyno.

If you can't get access to a dyno then you're going to be limited as to what you can achieve. Fortunately if the engine configuration is quite close to stock you'll get reasonable results by using one of the base maps for cam target and then optimising fuel/ignition.

Good summary . Basically the more sophisticated engines with variable valve timing in terms of cam advance use this interpolation he is describing. It is by no means just a Honda thing. Ford engines for example do the same thing.

Can you list your mods OP?

Good summary . Basically the more sophisticated engines with variable valve timing in terms of cam advance use this interpolation he is describing. It is by no means just a Honda thing. Ford engines for example do the same thing.

Can you list your mods OP?

Good summary . Basically the more sophisticated engines with variable valve timing in terms of cam advance use this interpolation he is describing. It is by no means just a Honda thing. Ford engines for example do the same thing.

Can you list your mods OP?

Is a lot of fun to tune k series engine with Hondata, of you dont have a dyno you will be a little lost on the ignition map (you can still get good results) and you can make a good VTC map looking at the values from the fuel table (bigger the number more fuel if that more fuel is to keep your lambda target, then the engine is breathing better and making more power).

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