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VTEC ignition advance

Posted: Sat Mar 03, 2012 4:00 am
by rog06s2k
Hi,
I intend to install water meth injection, would like to inject under VTEC activation using the VTEC solenoid signal, is it possible to map the ignition (advance) under VTEC activation area only.
Thanks.

Re: VTEC ignition advance

Posted: Mon Mar 05, 2012 12:24 pm
by Spunkster
I'm sorry, but I don't understand exactly what you mean.

Re: VTEC ignition advance

Posted: Mon Mar 05, 2012 3:09 pm
by rog06s2k
Hi, sorry I'm a newb & I should have title it ignition advance only...
I'm under the assumption that the max timing advance is valid troughout the rpm range
Can you advance the ignition in specific area of a tune? or max timing is the baseline troughout the rpm & load range?
Example, Water/Meth start injecting at 4200 rpm under full load this is my VTEC engagement point, this is where I would like to advance timing in order to benefit from the Water/Meth higher octane.
However when off the VTEC (low load) and at 6000 rpm I would not be injecting.
I imagine that one could increase the timing in the appropriate load vs rpm tables but I don't know enough about ECU tuning...
Do I make sense? Obviously somebody else is gonna do the tuning, if the above can be done...LOL!
Cheers

Re: VTEC ignition advance

Posted: Mon Mar 05, 2012 5:33 pm
by Spunkster
Please download the software, load a base map and see how it all works, that will give you a better understanding of it all.

Re: VTEC ignition advance

Posted: Wed Mar 07, 2012 10:31 am
by rog06s2k
Thanks for pushing me, I opened my last calibration file + a 3rd gear pull datalog. Graphed it sure enough I can see what cells are highlighted by moving the cursor, funny how the low ignition table changes to the high one at the VST activation, select cells in columns 9&10 and rows from VST activation RPM right click and automatically add or add specific values.
Correct me if I'm wrong.
Thanks again