User Tag List
Results 1 to 15 of 179
Hybrid View
-
08-21-2018, 10:22 AM #1Member
- Join Date
- Jan 2018
- Location
- NE Oklahoma
- Posts
- 66
- Thanks (Given)
- 1
- Thanks (Received)
- 1
- Likes (Given)
- 7
- Likes (Received)
- 1
- Mentioned
- 0 Post(s)
- Tagged
- 0 Thread(s)
2002 Mercury 225 EFI performance mods
What are some ideas and or combinations of parts to make this dog run like it's supposed to or better? XB heads? ProMax heads? ECMs? Reeds? What has worked for some of you guys?
Tony
-
08-21-2018, 02:58 PM #26000 RPM
- Join Date
- Jul 2011
- Location
- Gloucester, VA
- Posts
- 1,311
- Thanks (Given)
- 19
- Thanks (Received)
- 90
- Likes (Given)
- 180
- Likes (Received)
- 342
- Mentioned
- 2 Post(s)
- Tagged
- 0 Thread(s)
Just got through doing this on my 225 carb motor.
4 butterfly intake, 250 efi fuel and 300 ign ECUs, Chris Carsons reeds.
If you want to cut the tuner go for it.
That will wake her up.
-
08-21-2018, 03:31 PM #3Member
- Join Date
- Jan 2018
- Location
- NE Oklahoma
- Posts
- 66
- Thanks (Given)
- 1
- Thanks (Received)
- 1
- Likes (Given)
- 7
- Likes (Received)
- 1
- Mentioned
- 0 Post(s)
- Tagged
- 0 Thread(s)
-
08-29-2020, 05:29 PM #4Junior Member
- Join Date
- Aug 2020
- Location
- lakeland fl
- Posts
- 19
- Thanks (Given)
- 0
- Thanks (Received)
- 1
- Likes (Given)
- 0
- Likes (Received)
- 1
- Mentioned
- 0 Post(s)
- Tagged
- 0 Thread(s)
Any issues with this setup? I just put 300 efi fuel and ignition on my 2001 efi I also have chris carson reeds and block stuffers.
-
08-21-2018, 05:04 PM #56000 RPM
- Join Date
- Jul 2011
- Location
- Gloucester, VA
- Posts
- 1,311
- Thanks (Given)
- 19
- Thanks (Received)
- 90
- Likes (Given)
- 180
- Likes (Received)
- 342
- Mentioned
- 2 Post(s)
- Tagged
- 0 Thread(s)
Nevermind. You have the 555 ecm. Whole different game.
-
30velocity thanked for this post
-
08-22-2018, 05:57 AM #6Member
- Join Date
- Jan 2018
- Location
- NE Oklahoma
- Posts
- 66
- Thanks (Given)
- 1
- Thanks (Received)
- 1
- Likes (Given)
- 7
- Likes (Received)
- 1
- Mentioned
- 0 Post(s)
- Tagged
- 0 Thread(s)
So with the 555 ECM what do I need to do to squeeze some hp out of this thing. I know it needs more compression so I'm looking for suggestions as to what casting numbers to search for. And what ECM ro search for as well. I dont intend to do any tuner modifying although I would consider replacing with a 300 tuner. From what I've read on here the hot setup for previous years to mine was 300 ProMax ignition and 250 XB fuel ECMs but mine being a later model wont use the same ECMs.
-
08-22-2018, 10:50 AM #75000 RPM
- Join Date
- Jul 2008
- Location
- Canada
- Posts
- 112
- Thanks (Given)
- 2
- Thanks (Received)
- 2
- Likes (Given)
- 0
- Likes (Received)
- 1
- Mentioned
- 0 Post(s)
- Tagged
- 0 Thread(s)
I also have a 2002 225 EFI, trying to figure out what to do with this guy. I only see one ECM on mine as well. If you figure out what you're gonna do with yours let me know. Would love to compare notes.
-
08-22-2018, 10:58 AM #8Member
- Join Date
- Jan 2018
- Location
- NE Oklahoma
- Posts
- 66
- Thanks (Given)
- 1
- Thanks (Received)
- 1
- Likes (Given)
- 7
- Likes (Received)
- 1
- Mentioned
- 0 Post(s)
- Tagged
- 0 Thread(s)
I certainly will. Surely one or two of the knowledgeable gents on here will offer some insight
-
08-22-2018, 10:05 PM #95000 RPM
- Join Date
- May 2017
- Location
- US / NC
- Posts
- 131
- Thanks (Given)
- 0
- Thanks (Received)
- 3
- Likes (Given)
- 0
- Likes (Received)
- 5
- Mentioned
- 0 Post(s)
- Tagged
- 0 Thread(s)
If you have the one box or ECM you most likely have a down draft engine and the ECM has to be sent off and have flashed and have your heads cut . The 300X will hurt your bottom end or hole shot and be louder. Thats what i was told . I have a 2004 225 EFI with the one box and it is the down draft engine .
If any one want to mod there tuner or a mod tuner , i have one i would let go .That came out of my 300X Mid-section . it has been cut off about 6 inch , from the best i can remember . Going back stock .
-
08-22-2018, 10:30 PM #105000 RPM
- Join Date
- Jul 2008
- Location
- Canada
- Posts
- 112
- Thanks (Given)
- 2
- Thanks (Received)
- 2
- Likes (Given)
- 0
- Likes (Received)
- 1
- Mentioned
- 0 Post(s)
- Tagged
- 0 Thread(s)
-
08-23-2018, 02:03 PM #115000 RPM
- Join Date
- May 2017
- Location
- US / NC
- Posts
- 131
- Thanks (Given)
- 0
- Thanks (Received)
- 3
- Likes (Given)
- 0
- Likes (Received)
- 5
- Mentioned
- 0 Post(s)
- Tagged
- 0 Thread(s)
No to get gains out of these motor's ...the ECM controll every thing .....so the box has to be flashed to get more gas and rpm range . And the heads cut to make up for the gain's. There are more like the Optimax motor 's. Thats how it was explain to me . then mods to the tuner to exhaust more ?
I do know on the 300X they have a 1 inch hole in the bottom of the tuner and after market are cut to get gains .
-
08-23-2018, 03:47 PM #125000 RPM
- Join Date
- May 2017
- Location
- US / NC
- Posts
- 131
- Thanks (Given)
- 0
- Thanks (Received)
- 3
- Likes (Given)
- 0
- Likes (Received)
- 5
- Mentioned
- 0 Post(s)
- Tagged
- 0 Thread(s)
I have one that's been cut like in the pic from Simmon MotorSports ....on the shelf. It came in a 300X driveshaft housing or mid -section ..it the late style tuner with the 18 idle relief ports in it . If any one wants to try a cut tuner , this way they dont have to cut there good one. If they want to go bad ? Dont want much for it ,shipping will eat most of the bill .Just PM me a price you want to pay for it ,we go from there .
-
08-23-2018, 05:36 AM #13Member
- Join Date
- Jan 2018
- Location
- NE Oklahoma
- Posts
- 66
- Thanks (Given)
- 1
- Thanks (Received)
- 1
- Likes (Given)
- 7
- Likes (Received)
- 1
- Mentioned
- 0 Post(s)
- Tagged
- 0 Thread(s)
-
08-22-2018, 11:08 PM #14
http://www.simonmotorsports.com/popp...tinstall2.html
Directions in where to cut tuner and installation of poppet diverter
-
08-23-2018, 02:48 PM #155000 RPM
- Join Date
- Jul 2008
- Location
- Canada
- Posts
- 112
- Thanks (Given)
- 2
- Thanks (Received)
- 2
- Likes (Given)
- 0
- Likes (Received)
- 1
- Mentioned
- 0 Post(s)
- Tagged
- 0 Thread(s)
Is it feasible to stage and upgrade out?
EG
Get the computer re flashed then get the heads cut etc...
or is this a build it and flash it to the build type thing.
Similar Threads
-
Performance mods for mercury 250 efi
By rico64 in forum Props, Setup, and RiggingReplies: 3Last Post: 12-26-2014, 06:40 PM -
Mercury 88' 2.4L 200 performance mods?
By WFO_88_201 in forum Technical DiscussionReplies: 5Last Post: 04-05-2013, 03:08 PM -
Mods for 2002 9.9 Mercury 2 stroke that won't blow it up!
By TacomaTodd in forum Technical DiscussionReplies: 2Last Post: 06-12-2012, 05:58 PM -
1995 mercury 150hp 2.0 liter performance mods (new to S&F)
By roughthumbbg in forum Technical DiscussionReplies: 9Last Post: 06-04-2010, 07:38 AM