ok im new to hondas but i got a few ?'s. i have a 91 hatch that had a 92 Ls in it. That motor threw a rod so i am looking at a lsvetc. My question is ......can i put in this motor using the ecu that already there and buy some sort of controller to run the vtec or do i need a new ecu. thanks guys

 

you need new ecu. chipped p28 is best + vafc

 

what is the p28 and vafc

 

p28 is an ecu from a 92-95 civic ex/si and its obd1 vtec...to use that youd have to get a conversion harness since your car is non obd...vafc is a vtec controller...you can just use you ecu and get it chipped and use a switch...or just use a switch on the stock ecu...or just get a pwo or pr3 ecu...

 

pr3 or pwo are from japanese 90-93 integra's and 89-91 crx/civics

 

what do you mean by a switch. like i activate the vtec by pressing a button. i deffinatly dont want that. and what would be the best possible setup

 

best and cheapest way to go is run a pr3 ecu or a chipped p28 with a conversion harness as sayd above.
I advice against running any kind of rpm activated switch and your ls ecu, since timing and fuel will be way off

 

so with a pr3 ecu i will still need the conversion harness? and it will be ready to run the vtec like stock without any buttons and ****

 

any help

 

sounds like the p28 is my best bet cuz it will already have the vtec function

 

p28 will work but ur car is obd0 so youll need to convert to obd1 vafc will help tweek and tune ur curves and vtec engagement u could have an obd1 ls in there which would save u time and money on the wiring or conversion harness check ur block and ecu to see what u have before you start buying

 

your better off using a pr3 and just adding the vtec wires to your harness you already have. its your cheapest bet and it already plugs into your harness so no converter harness is required and you will find just as many chips for a pr3 as a p28 and unless your gonna be hardcore about tuning you wont need a vafc with a chip