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-   -   Has anyone used/tried this?????? (https://www.offshoreonly.com/forums/general-q/186368-has-anyone-used-tried.html)

trawfish 06-10-2008 08:21 AM


Originally Posted by Warlock28SXT (Post 2585590)
After getting familiar with the sw, reading and talking to Bob at MEFIBurn. I went through my current flash in the ECM(compared to a stock 502MEFI1 program). The only change was in the fuel map. Above 3200 RPM there is a ton of fuel dumped into the motor with no more timing. Huh I wonder why my motor would not RPM!:mad: This was the only change I saw in the program. I have done away with the extreme jump in fuel and added a bit 1-2* of timing for starters. I have yet to run the boat due to the weather in the midwest. I just wanted to let you guys know what was going on. This was money well spent. No more guessing on a program for my motor, just some tuning time. I'll post some numbers after I get it out.


I'm to lazy to read all the way back.....Are you running an 02 meter? My first go around with a "professional" hack, I mean programmer had huge amounts of fuel.... so much that I could not get the boat on plane, let alone up in rpm.

If you will be getting into boost, you don't want to be adding timing and taking away fuel, but possibly retarding to avoid detonation. An AFR meter will guide you safely through the woods .

Warlock28SXT 06-10-2008 09:46 AM


Originally Posted by trawfish (Post 2585611)
I'm to lazy to read all the way back.....Are you running an 02 meter? My first go around with a "professional" hack, I mean programmer had huge amounts of fuel.... so much that I could not get the boat on plane, let alone up in rpm.

If you will be getting into boost, you don't want to be adding timing and taking away fuel, but possibly retarding to avoid detonation. An AFR meter will guide you safely through the woods .

Yes I am running an LM-1. I didgo up in timing as the factory tune is about 25* per the mefi program. I only went to 27* around 3200 when at WOT 26*. just a staring point. I will watch my LM-1 and MEFIBurn real close as I like the way it sounds, running.
I only took a bit of fuel out it jumped from around 7.8 to 12.5 @ 3200. it still is getting more fuel than stock but not turning the choke on:grinser010: as far as the having it reprogrammed professionally it was yes a waste of time and money. Anyway no hard feeling on that I only did it once. Like I said in my e-mail to you congrats on getting it running better. I hope to have mine running soon but it seems to be monsoon season around here latlely.

trawfish 06-10-2008 07:16 PM


Originally Posted by Warlock28SXT (Post 2585665)
Yes I am running an LM-1. I didgo up in timing as the factory tune is about 25* per the mefi program. I only went to 27* around 3200 when at WOT 26*. just a staring point. I will watch my LM-1 and MEFIBurn real close as I like the way it sounds, running.
I only took a bit of fuel out it jumped from around 7.8 to 12.5 @ 3200. it still is getting more fuel than stock but not turning the choke on:grinser010: as far as the having it reprogrammed professionally it was yes a waste of time and money. Anyway no hard feeling on that I only did it once. Like I said in my e-mail to you congrats on getting it running better. I hope to have mine running soon but it seems to be monsoon season around here latlely.


Holy cow!:eek: I can't beleive it even ran at 7.8 afr.... sounds like youre on the right track :drink:

You have monsoon season in WI ???

Warlock28SXT 06-10-2008 11:04 PM


Originally Posted by trawfish (Post 2586323)
Holy cow!:eek: I can't beleive it even ran at 7.8 afr.... sounds like youre on the right track :drink:

You have monsoon season in WI ???

7.8 is the value in the SW 9.8 were the afr's at idle and WOT.
Yes it has been raining here a lot. most of the rivers are overflowing their banks and we have had a few dam breaks. I hope it will pass soon and we can get back to a normal season.

articfriends 06-11-2008 12:20 AM

Did you guys buy the std version or the pro version. When you bought your lm-1 did you buy the rpm adapter so you could re-call what rpm you were at when recording afr's,I never scheduled any time for water testing with Crockett since dyno tuning my motor last year on his dyno,I know its fat on my N/A tune so I'm thinking about buying the stuff and doing my own tuning mainly because I don't have time to drive 100 miles and spend a day tuning with him this year,Smitty

trawfish 06-11-2008 12:47 AM


Originally Posted by articfriends (Post 2586617)
Did you guys buy the std version or the pro version. When you bought your lm-1 did you buy the rpm adapter so you could re-call what rpm you were at when recording afr's,I never scheduled any time for water testing with Crockett since dyno tuning my motor last year on his dyno,I know its fat on my N/A tune so I'm thinking about buying the stuff and doing my own tuning mainly because I don't have time to drive 100 miles and spend a day tuning with him this year,Smitty


Just the standard edition scan and tune will allow you to do everyting you want. You can change like 900 things with it!!

I did not buy the rpm converter so I have to scribble on a pad of paper while watching the scanner on the laptop and the lm-1 meter. It would be nice to have them together and create one log, but unless you have like a mefi4 that was already set up to read 02, or did some pin outs to adapt for it, I don't know how to make the lm-1 work with the scanner software. Even with the rpm converter the lm-1 still wont tell you the MAP reading so you can't be sure which table to address.

I just write down my RPM/MAP/AFR and then adjust BPW in the corresponding table... a little time consuming, but it works well.

trawfish 06-11-2008 12:52 AM

Oh! and just fyi.... if you are going to buy an lm-1 don't order their serial port to usb adapter. I went through all kinds of trouble with it and ended buying a $40 Belkin adapter from Best Buy that worked great. Thought it was cause I am running Vista, and finally determined the cable was just bad. $29.99 plus shipping in the hole!

articfriends 06-11-2008 01:19 AM

When I did on the water tuning with Crockett last time he would have me hold it at a certain rpm until the afr's stabilized on his lm-1 while he watched the screen on his laptop,he would make a adjustment to the fuel tables and we would re-test at same rpm. When we got to the higher speeds where it was just impossible for him to do much other then just hold on he would data log the run then play it back and make adjustments,I thought watching his laptop it showed what bar/map table we were running in at the time/rpm but he had a different version of sotware too,not sure how it compares to mef-burn,Smitty

trawfish 06-11-2008 01:45 AM

1 Attachment(s)
Sounds about the same as the MEFIburn, except you have to remember what the AFR was at a certain RPM and the corresponding MAP as those are the variables for the BPW fuel tables. I had to write it down as I was watching two different screens. I suppose I could have started both logs at the same time and referred back to them to make adjustments, but I probably would have screwed that up.

It sounds like he could adjust while on the fly. The MEFI burn will only let you make the adjustments and then load the whole program again, so everytime you make an adjustment you have to re-load it.

The scanner screen lookes like this!
Attachment 346337

RunninHotRacing163.1 06-11-2008 08:06 AM


Originally Posted by TylerCrockett (Post 2586728)
Trawfish I have 2 twin turbo charged 572ci engines we just finished. I have 96# injectors and 3 bar map sencors and using a Mefi 4B ecu . If I send you my ecu's will you put the program in them I need so I don't have to dyno them. This will save me a lot of time Thanks Tyler.

So Tyler now what ya gonna do with all that saved time :ernaehrung004:


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