Is a merc ecu 175 and 200 interchangeable

[toonedin]

I read recently that I can make my 1997 merc 175hp into a 200hp just by changing the ecu , is that right?

[Da Bull]

No you can`t. Sorry for the bad news but there is a world of difference in porting and tuning between the two motors.

DB

[toonedin]

No you can`t. Sorry for the bad news but there is a world of difference in porting and tuning between the two motors.

DB

the internet is full of mis-information, I figured but I felt folks here would know.

Happy 4th!!

[TEXAS20225]

the ecus will run on any motor maybe better on one then the other but the 175 wont ever be a 200 till you do a gob of porting and afew other things to pony up the ponies

[TEXAS20225]

i just bought a 175 ecu that was 95 bucks on ebay with paypal (that makes it have to be good or you get your money back) dropped it on a 200 efi it runs great, many time ive had a sluggish ecu and dropped a lower horse power one on it only to have it run better so go figure