Don Guhl re-flash on the 2013 F, yes it is awsome

I sent him an email through his website. It is 8.5hours away, and I would be riding there. It's a big commitment, but I am willing to take one for the team. Maybe I could get a discount for being the donor bike. :eagerness:

 

Thank you for your willingness to help so many people.
Maybe you should call him because email is not the best for them?!

(717) 618-4212

Mon - Thur
9:00 AM - 5:30 PM

Fri
9:00 AM - 12:00 PM

Sat & Sun Closed

 

Hi All,
I just talked to Don and he is a very nice guy
He got your email and he said that it could take more than a day or two to dial everything in perfectly. He was even looking in to buying an VFR 1200 so he can work on it for all of us but he couldn't find anything so far.

I'm thinking about sending him the ECU next week. I hope it's not hard to get to on my VFR.

 

I will call him next week, things are really busy at work. Sounds like I need to take at least a week off, so right now thats not going to happen.

 

were you ever able to get some dyno time to show your numbers?

 

It is not that hard to remove. It is located in the front just forward of the gas tank. You need to remove the plastic tank covers and release the fairing on each side adjacent to the front of the tank (push connectors). Remove the bolts holding the front of the gas tank. Pull the fairing back on each side at the front of the tank & lift the tank in the front. A short piece of board (say 16 inches) can be used as a prop to hold the front of the gas tank up, it will pivot up from the bolt holding the back of the tank. remove the IAT sensor from the front of the air box. Looking down directly in front of the air box you will see the ECU. Release it from its holder and pull it up. You then release the three wire harness connectors and it is out and ready to pack for shipment.

 

Thank you so much.
I'm hoping to do this next week and hopefully fix the famous 1st and 2nd gear issue with my VFR.

 

Sorry to bug you again...
One more question.
I have the Bazzaz Zbomb on my 2010 VFR and it helps with the fueling issue and 1st and 2nd gear (at least I think it does lol)
Am I going to be able to tell difference after Don Guhl re-flash and the Bazzaz Zbomb I am currently using? Is it that much better?

I guess I'm asking if the re-flash is worth the difference from Bazzaz Zbomb I have connected right now?

Thank you in advance

 

Hi,
Did you talked to Don by chance?

Thank you

I think I will work on removing the ECU tomorrow if I have time and sending it in for Tuesday morning delivery....

 

.........

 

ESLC have you gone to the VFRFORUM.COM website and looked under 7th gen vfr?? We had four threads going over there which have been combined into one thread with over 370 posts on the ECU re-flash since Jan this year. I tried to generate some interest over here last year in finding a experienced ECU re-flash company and a source for other more serious performance enhancements but there just wasn't that much interest. I turned to Don Guhl for the ECU re-flash because I had experience with his company with a re-flash he did on my 2012 ZX14R. The whole story is over at vfrforum.com if you want to wade through all the posts.

Is the re-flash worth the $350??? If all you want to do is get rid of the 1st & 2nd gear restriction and you don't care about the gear indicator being fully functional the answer is no, just install a $65 ZBOMB and be done with it. The Guhl ECU re-flash does a lot more than remove the 1st & 2nd gear power restriction. You have the choice to remove other restrictions and/or modify the ECU settings for other things. Currently you can have Guhl do the following with your ECU:
1. Remove the 1st & 2nd gear power restriction.
2. Change the coolant fan setting (lower it from 223 F to 205 F).
3. Increase the RPM limit setting, I had mine increased 500 RPM.
4. Disable the alarm code if you remove the servo motor for the
stock muffler.
5. Install a Dynojet fuel map directly into your ECU.
6. Eliminate the top speed limiter for 5th & 6th gears (Guhl may or may
not have solved this one yet).
7. Guhl includes free next day return of your ECU in the US.
8. The $350 fee includes free future re-flash updates to as they
become available.

You don't have to take all the options, you can pick and choose which ones you want. Call Don and discuss what you want before sending in the ECU and include a letter listing what you want done.

Hope this helps.

 

I just removed the ECU and it wasn't as bad.... I hope I can put it back in just as easy lol. I'm hoping to talk to Don tomorrow and send it in. I think it's worth it!

However I found 2 rubbers when I was done and I have no clue where they came from?
Here is the picture:

 

Thank you for your instructions. I just removed it finally and I'm sending it in tomorrow.
I'm really hoping that my first and second gear will more very smooth after the re-flash. And it would be nice to have my gear indicator back after I remove the Z-bomb Bazazz.

Thank you again.

 

ECLS have you done anything else to your bike other than the ZBOMB?? The ZBOMB removed the power restriction Honda programmed into the ECU but it does nothing to correct the fuel mapping problems they also programmed in, probably for emissions reasons. I got rid of the fueling issues with a Power Commander before the Guhl re-flash was available. Did you discuss with Don having him install a new fuel map in your ECU and go over any modifications you have made so he can install a map that matches your set up?

 

Other than the Z-Bomb? I have a Delkevic exhaust installed and stock exhaust and servo motor removed.
I talked to him about two weeks ago and I'm calling him tomorrow morning to confirm what can and can't be done.

After you mention it... now I'm thinking about the power commander. That is a less expensive solution... but again re-flash does improve things too.

 

Unless you are really going for serious HP increases requiring a custom fuel map for mods other than the common changes most make, Don should be able to give you everything you need in his re-flash. Based on what you have described if I were you I would let Don provide your ECU with a appropriate fuel map as well as the other options you choose before spending money on a fuel controller. Try the re-flashed ECU first before doing anything else and see what you think.

 

I just send my ECU to Don Guhl...
Here is what I'm thinking should be done:

1. Remove the 1st and 2nd gear power restriction
2. Revise fuel map
3. Increase the RPM limit setting by 500 RPM
4. Disable the alarm code for the servo motore(because I have another exhaust installed and motor completely removed)
5. Install a Dynojet fuel map directly into ECU if possible
6. Eliminate the top speed limiter for 5th and 6th gears if possible
7. I would like to leave the fan and thermostat (temperature) as is so it doesn't stay on most of the time.


Am I missing something?

Thank you

 

No looks fine to me. Let us know what you think after riding it for a while after the re-flash.

 

I will for sure!

 

E.SLC. have you received your re-flashed ECU back from Don Guhl. I talked to him today and he has found the final speed restriction in the ECU (it is speed restricted in two software code locations in the ECU and they missed the second one in the 1st re-flash). I sent my ECU back today for a re-flash to update it to remove the speed limiter. Will test it on a dyno when I get it back to verify it is gone.