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SlowLS
10-08-2007, 02:59 PM
If i change the ECU on my 98 DX to maybe an EX ECU or an SI ECU, will i see any change in power?:but:
Mr.Burner
10-08-2007, 03:27 PM
you will see a power loss. because the ecu wants to see vtec, if you dont have it, dont change it....
SlowLS
10-09-2007, 10:49 AM
it wouldn't change my rev limit?
GNU
10-09-2007, 12:18 PM
SI= b series vtec, all motors have different needs as fair as timing and afr's. Give it what it needs/wants which is what honda programmed the stocker for.
Mr.Burner
10-09-2007, 12:32 PM
it wouldn't change my rev limit?

it may change the rev a little but your still going to have a check engine light on. plus I wouldnt be revin a d series motor past what the factory sets it at unless you have some serious motor work done...

Motor swap it to a b16 or ls then you can change the ecu. otherwise just drive it.
efyoufool
10-09-2007, 01:16 PM
no need to switch ecus. unless u go obd1 and want to tune it.
my99ctr
10-18-2007, 10:32 PM
SI= b series vtec, all motors have different needs as fair as timing and afr's. Give it what it needs/wants which is what honda programmed the stocker for.
unless he was refering to the 99-00 si than
eg si equals sohc an since he has a sohc i figure he was refering to the eg an if he was refering to eg si than just so you know your gonna need a jumper harness