HarleyTechTalk

Have a 2001 FLHTC-I that we are trying to tune and we are having (intermittent) issues we believe are related to possible ECM failure. Rear injector will occasionally stay on too long and over-fuel that cylinder. All wiring checks okay.

So, thinking ECM replacement but trying to decide if we should go with stock or the S&S VFI Module.

Does anyone have current experience with these (found a few posts where guys said they liked them), I haven't found anyone that has shared specific success stories. Likes / dislikes - pros / cons, that type of thing.

Also on a side note this bike has had a couple failed PCIII's and Dynojet warrantied the last one and sent us a PC-V at no charge. Wondering if there might be some correlation. Don't see many of these anymore and just wanna steer the guy in the right direction.

Did you see this one ?

http://www.harleytechtalk.com/htt/index.php/topic,87640.0/all.html

reply #16
might be worth a pm

I have done several S&S units. They work great.

Convert to Delphi.  Dan Thayer sells a good setup.

I've never used the S&S but the replacement OEM tunable one works well.  No need for any other tuner

Quote from: harleytuner on December 16, 2015, 06:15:00 PM
I've never used the S&S but the replacement OEM tunable one works well.  No need for any other tuner

Can u be more specific? Sorry I don't know a lot about mm efi. Is it a replacement one from hd that is tune able and if so with what?

Harley supersedes to the S&S VFI unit and i comes with the basic software with base maps and tuning ability.

Quote from: Raleigh111 on December 17, 2015, 07:35:43 AM

Quote from: harleytuner on December 16, 2015, 06:15:00 PM
I've never used the S&S but the replacement OEM tunable one works well.  No need for any other tuner

Can u be more specific? Sorry I don't know a lot about mm efi. Is it a replacement one from hd that is tune able and if so with what?

Yes, the HD replacement MM ECM has a mini USB port and it is user adjustable.  There's software you get with it and you can tune it.  No need for any other tuning device.  I tuned a 113" MM bike that made over 130HP with one.  If I remember correctly they run right around $500 for it.

Quote from: remington007 on December 17, 2015, 07:54:09 AM
Harley supersedes to the S&S VFI unit and i comes with the basic software with base maps and tuning ability.

So it's the same thing then, I did not know that.  We always got them right from HD.  Been using them for at least 3 or 4 years now lol.

Quote from: harleytuner on December 17, 2015, 07:55:12 AM

Quote from: Raleigh111 on December 17, 2015, 07:35:43 AM

Quote from: harleytuner on December 16, 2015, 06:15:00 PM
Yes, the HD replacement MM ECM has a mini USB port and it is user adjustable.  There's software you get with it and you can tune it.  No need for any other tuning device.  I tuned a 113" MM bike that made over 130HP with one.  If I remember correctly they run right around $500 for it.

I'm guessing that u were not using the mm throttle body making 130hp?

Quote from: harleytuner on December 17, 2015, 07:56:41 AM

Quote from: remington007 on December 17, 2015, 07:54:09 AM
Harley supersedes to the S&S VFI unit and i comes with the basic software with base maps and tuning ability.

So it's the same thing then, I did not know that.  We always got them right from HD.  Been using them for at least 3 or 4 years now lol.

Yes, use S&S Protune 2 version 3.6 software and you can get to more adjustments.  Use the S&S wide band kit and fuel will auto adjust.  I have this system on my 2000 Road King with bungs for 18mm wide band sensors.  S&S wide band kit: Instruction part number 106-0048

Harley ECM: ECM, BLANK, SERV-REPLACE - 41000012A

http://www.sscycle.com/files/2014/2981/6064/106-0048_Closed_Loop_Oxygen_Sensor_Kit_Mag_Marelli_20150331.pdf

It seems that only HD maps work, but they can be adjusted to fit your configuration.

Quote from: Raleigh111 on December 17, 2015, 08:52:54 AM

Quote from: harleytuner on December 17, 2015, 07:55:12 AM

Quote from: Raleigh111 on December 17, 2015, 07:35:43 AM

Quote from: harleytuner on December 16, 2015, 06:15:00 PM
Yes, the HD replacement MM ECM has a mini USB port and it is user adjustable.  There's software you get with it and you can tune it.  No need for any other tuning device.  I tuned a 113" MM bike that made over 130HP with one.  If I remember correctly they run right around $500 for it.

I'm guessing that u were not using the mm throttle body making 130hp?

No HPI

 

Based on experience and recommendations from you guys, I ordered the S&S module today.
Thanks everyone for the valuable input. 

Quote from: harleytuner on December 17, 2015, 07:56:41 AM

Quote from: remington007 on December 17, 2015, 07:54:09 AM
Harley supersedes to the S&S VFI unit and i comes with the basic software with base maps and tuning ability.

So it's the same thing then, I did not know that.  We always got them right from HD.  Been using them for at least 3 or 4 years now lol.

Not exactly. Firmware is different, and maps generally available only to S&S dealers. HD unit retains same TPS and RPM increments used in the MM unit, while the S&S unit uses the increments that they like better. Probably a good idea to keep your software/firmware combinations straight if you tune both brands of VF, if you like using .box files.

Quote from: barrybasinger on December 23, 2015, 02:43:38 PM

Quote from: harleytuner on December 17, 2015, 07:56:41 AM

Quote from: remington007 on December 17, 2015, 07:54:09 AM
Harley supersedes to the S&S VFI unit and i comes with the basic software with base maps and tuning ability.

So it's the same thing then, I did not know that.  We always got them right from HD.  Been using them for at least 3 or 4 years now lol.

Not exactly. Firmware is different, and maps generally available only to S&S dealers. HD unit retains same TPS and RPM increments used in the MM unit, while the S&S unit uses the increments that they like better. Probably a good idea to keep your software/firmware combinations straight if you tune both brands of VF, if you like using .box files.

Good info, thanks Barry.