Why not just buy the engine rated at the hp you are wanting? I would think an engine born with that tune cam profiles etc would be more reliable than one tweaked with the ecm only later. Could be wrong.
Why not just buy the engine rated at the hp you are wanting? I would think an engine born with that tune cam profiles etc would be more reliable than one tweaked with the ecm only later. Could be wrong.
Roy
2020 Triton 18 Trx
Mercury 200 Pro XS V8
Bravo FS 24P Prop
Atlas 6” jp
Dual Humminbird Helix 10 MEGA SI
Minnkota Ultrex.
because if I ever decide to tournament fish... I could have my cake and eat it too lol. I could have a 100%factory ecu and another tuned for 300+hp.
and the main reason, I’ve never ever kept a car or truck stock. So why should I have to keep my boat stock? I buy a new vehicle with the biggest available engine and almost immediately tune it at the very least. Some of them I’ve put bigger cam, head work, etc.
Bruce
2019 20 TRX Patriot
Mercury 250 ProXS Fourstroke
HDS 12 Live - Console
HDS 9 Live - Bow
I wonder how many people are as honest as you to run a different ECU when they are in a tournament?
And they are not saying you can't modify the engine, just don't come to them asking for help if it goes sideways. If you put a new cam or worked head in a new Chevy, Ford or Dodge, they are going to tell you the same thing I suspect. That said, I think there are some mods that won't void your warranty or perhaps the product of the mod, (like a blower), will pick of the slack if needed.
Bruce
2019 20 TRX Patriot
Mercury 250 ProXS Fourstroke
HDS 12 Live - Console
HDS 9 Live - Bow
So does this mean Mercury will no longer allow their engines, that are not factory tuned, to be used in boat racing?
2023 Triton 18TRX
2023 Mercury 200 Pro XS
80# Ultrex IPilot Link
Helix 12 Mega SI & Garmin Livescope w/ 1242XSV GPSmap
Here is my issue with this - SHO has a proven track record of mods. The merc can be the same. This is not rocket science. If you mod it, you forfeit the warranty. Some are OK with this
Ok... this is running off the rails at this point. Can you think of a Mercury Racing engine model built since 2000 that didn't have a PCM or ECU?
And yes, not only can Merc tell if the PCM has been messed with- the Engine Serial Number is encoded into the PCM, and replacement PCM's are not listed as "replacement parts" on some of the PCM-112 models (especially the "R" or Racing models).
Last edited by EuropeanAM; 06-05-2020 at 01:30 PM.
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 47 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
So 1 more question on this. Don, can I buy a 150 fourstroke pro xs ecu and put on my regular fourstroke? That would only be 5hp extra, but it would raise the rev limit by 200rpm.
Joe- you know that's not at all what I said. It simply means that any replacements have to be obtained through Mercury's Warranty Service Department (on a case-by-case basis) and when a replacement is needed it will be encoded with the serial number information by them.
I should further clarify that most of the "R" or Race models show the PCM as "NSS" (Not Sold Separately). Part numbers are now listed for most of the Fourstroke, Verado V8, ProXS and SeaPro models.
Theoretically, yes... but there are other differences between the two models (including but not necessarily limited to the mounts and gearcase). And... illegal to do so.Originally Posted by gonefishin1012
Last edited by EuropeanAM; 06-05-2020 at 01:30 PM.
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 47 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
The 75 runs so much nicer with the 115 tune.
_______
Phil
'09 Hewescraft ProV
'09 150 Optimax
If your out of warranty who cares WTF you do with YOUR Engine. So you buy and upgrade to make it more "efficient" and your punished.
All about the almighty dollar.
2023 Xpress H18 with 115 SHO and Powertech NRS4 21p
8" Bob's Action Jack
Garmin Echomap 12, 10, 9, and LVS34 networked with Netgear Switch
Ultrex
Trick Steps and Ramp N Clamp
Pulled by a 2016 single cab HEMI Ram
No one likes a pot licker or GPS pirate. FIND YOUR OWN FISH!
its pretty simple guys...
if everyone could buy a 225 v8 and spend $1000 or less to bump it up to 350hp, WHY BY A STOCK 350??????
if i owned MERC , I WOULD DO THE SAME THING>>>.....
if you want 300 HP , BUY A 300!
Sterling 22XS / Mercury Pro XS V8
Then give the customer a legit reason to buy a 300 other than all hardware being the same just a different calibration. You don't see GM selling a Detuned 5.3L 250hp engine featuring all the same components as a LTZ 340hp Engine. And if your that touchy on your calibration go Cloud based ECU calibrations. This will turn out to a "Who you know" scam of price hikes now.
Essentially Merc was happy to save the almighty dollar in hardware but doesn't want you the consumer to save the dollar by upgrading YOUR engine when YOU want to.