mefi tuning finally available to everyone-CHEAP
 

I search E-bay daily for mefi stuff,first time I ran acrossed this. Last year AZSM nade mefi tuning available to everyone but it was 1600$ a pop and would only do one ECM. With this set-up and the pro version it looks like anyone (with basic computer tuning skills) will be able to tune their mefi system without buying a exspensive bootleg copy or going to the few shops that have bought a illegal bootleg copy snuck out mercs back door or are priveleged enough to have it. Has anyone else seen this or used it yet,Smitty
http://cgi.ebay.com/ebaymotors/MEFI-...QQcmdZViewItem

Great find. Are you going to try it?

It's about time this hit the public domain. If I ever get my MPI stuff from the guy I bought it from, I'd try it.

I wonder what the difference between the standard and pro versions are. What are the "extended parameters"?

I looked into tunercat a couple of years ago and was under the impression that it wasn't useable on the marine ecm's. This one appears to be using tunerpro, www.tunerpro.net . I am wondering if they have built specific applications for the mefi or if it is generic. Tunerpro is free with a donation if you want to. The cables are available from a couple of places that are linked from their website. My biggest concern is screwing things up if I am using software like this.

Rene

a bit expensive but looks ok to me if just as a data recorder. bought one and will advise. smitty... we talked a while back about coatings and you said when you had your motor apart you would make a decision on whether or not you felt they were worth it.... anything on that ?

Wonder if you can adjust the rev limiter?

The product description for the "standard" model says you can reprogram the fuel and spark curves, etc... I sent an email to the distributor asking them to define "etc..." Also, their liturature says that it supports MEFI 4 and up but says "BETA" for MEFI 1,2&3. Maybe a stupid question but what does BETA mean???? I also asked this in my email. I will share their answers....if they answer.

In computer terms BETA is still under development. In other words, it can have bugs.

Rene

I wouldn't get your hopes up too much. Here is what the auction says now:

"The seller ended this listing early because the item is no longer available for sale."

Michael

The key to making any of this work is having the appropriate calibration files. Merc ECU's are password protected so you cannot upload them. Therefore you must have the correct file to start with, then modify it as desired.

Steve, I'm not convinced the coatings did much for my cylinder heads and valves as the exhaust valves had very little evidence of the coating left on them and had small cracks in the surface near the stem/radius but as far as the pistons there was zero signs of scuffing and the burnt oil look I have seen in the past on the inside/bottom of the crowns was very minimal so I think it kept the heat from going thru the piston and expanding the skirt which causes scuffing. The pistons were still real nice so I sent them back to swain tech and had them strip the coating and re-coat them,Smitty

I'd like to know if it would allow me to go into a mefi3 and tewak it or not,I e-mailed the seller,waiting for a response. I'm working with rm builder on modifying a mpi top end for a n/a motor and this would allow me to dyno it locally,Smitty

here is their ph # i plan to call them today. 888-639-9750.

Like Bobl said you will have to erase the merc file and have a base cal file to start with or one that someone else has come up with for your engine combo, then fine tune from it.

Or you will be starting from scratch making a cal.


Smitty I bet Tyler put a password on your ecm, your going to need that to do any recalibrating, I wouldnt think the tuners will give out the passwords ,thats were they make there$$

As stated previously, you cannot simply go into the Merc files and modify them. You need to have a program to upload after you delete the Merc program. The Merc programs are password protected and need to be deleted to access the ECU.

That is going to be the hurdle to over come with any system.

I don't plan on re-writing my ecm,I have a spare I'm going to use on a N/A motor project I'm building. I'm still going to take my blower motor to Tyler to have him fine tune it after the mods I do this time around even if I buy software as I can't chance a lean spot while tuning it,not worth blowing it up with the kind of money I have wrapped up in it (you know a N/A motor could misfire lean a few times while tuning and live where a blower motor might immediately lift the heads or take the tops of the pistons off) ,Smitty

Seemed too good to be true. I see that they are listed as "Out of Stock" on this software on thier website.

Stevesxm,
Please let us know if you are able to get a copy and how it works. I would buy it in a heartbeat if it does what they say it does (although the beta thing scares me a little).

Dave

will advise

Talked to Dave the EFI tech today. OTC 4000 + cable and software is all that is needed. I hope he's not pissed at me for posting this. BBB

Billy,
As we discussed yesterday, the OTC 4000 enhanced scan tool (similar to Merc DDT) can monitor a MEFI 1-4 and ECM/PCM55 equipped marine engines data stream with the proper software cartridge and connection cable. It can't change the actual programming of the ECM, sorry if I gave you the impression that it would.

Dave

i have used this software. seem's to work. it's called mefi burn, google it. they also have a library of base cals for free. steve

www.mefiburn.com Looks good. Who is ready to buy?

I would really like to hear from someone who has this software. Since virtually all factory ECM's will be password protected, I am wondering what marine calibration files are available.

Hi Dave N,
Contact or call me directly at www.mefiburn.com and I can help you out. I posted last night but got flagged for some reason. I'd really like to help everyone out and get the information about this MEFI package out there. Thank you, Bob

If you are posting links and are not a advertiser they will poof your post,you could probably do 50,000$ worth of business on here fairly easy so you might want to become a advertiser or at least a paid member,Smitty

Bob,
I enjoyed speaking with you yesterday. I hope we can get together this week. I need to get scan software that will work on MEFI5 controllers, and I have a MEFI1 controller that I want to reprogram. Please call me to schedule.

Thanks,
Dave

why waste your time , just send it to precision marine...done right...


why people buy expensive tools ,programs ,etc to do something once , maybe twice.....i never understand...

f that ....easy to just send ,have back in a week and forget about it...it's done....

I see your point BUT alot of boats will benefit from going 1 step further by installing a wide band 02 sensor and re-tuning the fuel tables on the water with a laptop under real-world conditions as installed in the boat. I have the luxury of only being 90 miles from tyler crocketts shop,their are other guys in more remote locations though who need to be able to do this them selves not to mention some of the other shops who haven't bought a boot leg copy of the program who might want to tune their own motors on the dyno and not have to send the ecu off in the middle of a dyno session,Smitty

I met with Bob from MEFIburn yesterday. Great guy and he really knows his stuff. Not everybody will be up to the complex task of tuning a MEFI controller, but for those who are, it's finally possible. Thanks Bob!

Dave

Thanks Dave, it was nice meeting with you also. For those in Socal needing any work to their EFI powered boat, Dave is the man to see. He has a very nice setup and incredibly good diagnostic tools.

I'll let you guys know how it works out.

Frank

Has anyone used the Scan only version? Not the scan and tune version. The $200 price looks like a good alternative from the much higher $$ Diacom.

How does it compare to the Merc/Rinda scan tools?

Just looking for something to read all the numbers for trouble shooting, not reprogramming.

We used this on my boat. We were BETA testers for the development. Works good.

Whats BETA?
So it is basically the same as the Diacom as far as info shown on the PC?

I bought this software for MEFI 1 during the summer and gave up trying to get it to work. I would get data, but it was always erratic. i.e. timing at idle would read anywhere from 13* to 2000* just moving around like crazy. I talked to Bob and he suggested I play with the data stream speeds and all it did was get worse. I gave up calling him and gave up on the software. I've wasted $200 on less!

BETA is like VHS, only smaller & less avalibity.
BETA is actually a term used for stuff still in development/fine tuning.

Alrighty. Thanks guys.

Going to look for a used Diacom then, or a Scan tool.

In a small number of instances the electrical noise in the engine compartment will cause some data samples to drop out while scanning, causing the values to fluctuate. The samples that are there are valid and show the correct data. Occasional scanning data packet lose is expected, but in some cases the data drop outs are frequent enough where the displays will have values bouncing around, like in Griswald's, making it distracting to read. We now have a cable that has much higher RF electrical noise immunity. Griswald, if you would like to send us your cable we will send you a new one. We are here to provide useable solutions, and this scanning package, for less than $200, shows you every parameter from the MEFI controller with detailed logging capability.

I will take you up on that offer and see if it helps me. Be on the lookout for my email.

Clark Bird
Austin, TX