Bottom line crf450 EFI

mike_v812
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mike_v812
Edited Date/Time 2/10/2021 8:02am
What’s the bottom line with this EFI issue every video I watch says it’s a Unrefined ignition with a noticeable “burble”. The dealer wants 10,600OTD. It’s outrageous but what can ya do. Anyone have luck fixing This??for 10,600 I want a crisp ignition.
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Meister
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Meister 2/1/2021 4:11am
2/1/2021 4:11am
I wouldn't sweat it. I didn't.

Plus honda has a reflash out if you're not into having a tuner reprogram the ecu.
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navalseabee
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navalseabee 2/1/2021 4:20am
2/1/2021 4:20am
Rode one for a few laps the other weekend, never felt this gurgle they were all talking about.
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lumpy790
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lumpy790 2/1/2021 8:08am
2/1/2021 8:08am
I Know someone working on a fix for this but its not a remap
CraigCrashes
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CraigCrashes 2/1/2021 8:58am
2/1/2021 8:58am
lumpy790 wrote:
I Know someone working on a fix for this but its not a remap
Up one size on the pilot jet and raise the needle one notch
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yz133rider
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yz133rider 2/1/2021 10:19am
2/1/2021 10:19am
lumpy790 wrote:
I Know someone working on a fix for this but its not a remap
Is the fix a Y shaped radiator hose in red?
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nick610s
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nick610s 2/1/2021 12:05pm
2/1/2021 12:05pm
Yep Honda has released a reflash for this. Make sure they do it before you leave the dealer.
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kiwifan
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kiwifan 2/1/2021 1:05pm
2/1/2021 1:05pm
mike_v812 wrote:
What’s the bottom line with this EFI issue every video I watch says it’s a Unrefined ignition with a noticeable “burble”. The dealer wants 10,600OTD. It’s...
What’s the bottom line with this EFI issue every video I watch says it’s a Unrefined ignition with a noticeable “burble”. The dealer wants 10,600OTD. It’s outrageous but what can ya do. Anyone have luck fixing This??for 10,600 I want a crisp ignition.
the "noticeable burble" is only really noticeable if you lug it and in a certain map (I think #1 from memory), as a poster says above Honda has a reflash for the bike...personally I (and 90% of the guys I race with) remap every bike I have regardless of brand. The reflash and/or remap also fixes a potential problem with plug fouling which some have had.

I do know (personal experience) what a hell of a motor the Honda is (and its damn fucking good stock!) with decent remap...I do not think that is any secret to people who own one.

What I do hope for 2022 that Honda introduces a Wifi re-map system like Yamaha and KTM have....fingers crossed.
2
Blue Groove 2/1/2021 6:22pm
2/1/2021 6:22pm
Does anyone know if the Honda re-flash fixes all 3 maps or only maps 2 and 3?
nick610s
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nick610s 2/1/2021 6:31pm
2/1/2021 6:31pm
Blue Groove wrote:
Does anyone know if the Honda re-flash fixes all 3 maps or only maps 2 and 3?
I only know of one person that had it done and he said it’s a noticeable difference. He even had it done prior by one of the tuners and he said the Honda remap is better than the tuner remap. But I would assume they would rework all three to fix any low end stumble. I expect to get mine done by next week and I’ll check back.
hubbardmx50
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hubbardmx50 2/1/2021 9:24pm
2/1/2021 9:24pm
That’s awesome Honda is redoing the ECU’s. Has anyone in here ridden the original mapping before the fix and after? 2022 and up should be a badass bike. I hope they make more of them.....
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mike_v812
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mike_v812 2/2/2021 2:31am
2/2/2021 2:31am
nick610s wrote:
I only know of one person that had it done and he said it’s a noticeable difference. He even had it done prior by one of...
I only know of one person that had it done and he said it’s a noticeable difference. He even had it done prior by one of the tuners and he said the Honda remap is better than the tuner remap. But I would assume they would rework all three to fix any low end stumble. I expect to get mine done by next week and I’ll check back.
Ya check back!! for the money, and then having the suspension re-done it’s going to be like a 12k deal!!!Woohoo but then to be chasing down an EFI issue eff that!!
I’ve always been a yz250 2 stroke guy tried a 250F last year not enough power. Thought I’d try 450 this year because I can’t pay what they’re asking for a yz250 2 stroke OTD
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lumpy790
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lumpy790 2/3/2021 5:28am
2/3/2021 5:28am
lumpy790 wrote:
I Know someone working on a fix for this but its not a remap
yz133rider wrote:
Is the fix a Y shaped radiator hose in red?
Laughing not us but thanks but we are considering distributing them though
1
RCMXracing
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RCMXracing 2/3/2021 7:07am
2/3/2021 7:07am
nick610s wrote:
Yep Honda has released a reflash for this. Make sure they do it before you leave the dealer.
Are you saying that the dealers have the improved maps? This is not the case according to Honda.

I’ve spoken to American Honda and there are no recalls or product improvement bulletins for the EFI. Also have spoken to the dealer.

If the verified updated (blessed by Honda) maps are out there then the dealer could do it, but they most likely would charge for it. If certain mechanics at dealers are doing it and it’s not published by Honda then they are doing what you or I could with the EFI programmer dongle, software and a laptop. If they’re knowledgeable, then great! IMO you are paying for the knowledge... flashing it is easy.

Soooo someone in the know please publish the official improved maps!
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nick610s
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nick610s 2/3/2021 8:48pm
2/3/2021 8:48pm
nick610s wrote:
Yep Honda has released a reflash for this. Make sure they do it before you leave the dealer.
RCMXracing wrote:
Are you saying that the dealers have the improved maps? This is not the case according to Honda. I’ve spoken to American Honda and there are...
Are you saying that the dealers have the improved maps? This is not the case according to Honda.

I’ve spoken to American Honda and there are no recalls or product improvement bulletins for the EFI. Also have spoken to the dealer.

If the verified updated (blessed by Honda) maps are out there then the dealer could do it, but they most likely would charge for it. If certain mechanics at dealers are doing it and it’s not published by Honda then they are doing what you or I could with the EFI programmer dongle, software and a laptop. If they’re knowledgeable, then great! IMO you are paying for the knowledge... flashing it is easy.

Soooo someone in the know please publish the official improved maps!
When did you speak to Honda? This literally came out last week. I’ve seen the official bulletin. Also my local dealer had the update as well and is going to reflash my bike soon.
2
Meister
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Meister 2/3/2021 8:49pm
2/3/2021 8:49pm
nick610s wrote:
Yep Honda has released a reflash for this. Make sure they do it before you leave the dealer.
RCMXracing wrote:
Are you saying that the dealers have the improved maps? This is not the case according to Honda. I’ve spoken to American Honda and there are...
Are you saying that the dealers have the improved maps? This is not the case according to Honda.

I’ve spoken to American Honda and there are no recalls or product improvement bulletins for the EFI. Also have spoken to the dealer.

If the verified updated (blessed by Honda) maps are out there then the dealer could do it, but they most likely would charge for it. If certain mechanics at dealers are doing it and it’s not published by Honda then they are doing what you or I could with the EFI programmer dongle, software and a laptop. If they’re knowledgeable, then great! IMO you are paying for the knowledge... flashing it is easy.

Soooo someone in the know please publish the official improved maps!
No?
8
nick610s
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nick610s 2/3/2021 8:50pm
2/3/2021 8:50pm
nick610s wrote:
I only know of one person that had it done and he said it’s a noticeable difference. He even had it done prior by one of...
I only know of one person that had it done and he said it’s a noticeable difference. He even had it done prior by one of the tuners and he said the Honda remap is better than the tuner remap. But I would assume they would rework all three to fix any low end stumble. I expect to get mine done by next week and I’ll check back.
mike_v812 wrote:
Ya check back!! for the money, and then having the suspension re-done it’s going to be like a 12k deal!!!:woohoo: but then to be chasing down...
Ya check back!! for the money, and then having the suspension re-done it’s going to be like a 12k deal!!!Woohoo but then to be chasing down an EFI issue eff that!!
I’ve always been a yz250 2 stroke guy tried a 250F last year not enough power. Thought I’d try 450 this year because I can’t pay what they’re asking for a yz250 2 stroke OTD
Most new 450’s after suspension tuning most buy a pipe, and do a reflash.. also tons of people buy vortex stuff now. Are gonna be a 12k bill. Buy a couple year old bike to save some $.. most bikes within the last 5 years are more capable than the people riding them.
RCMXracing
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RCMXracing 2/4/2021 9:48am
2/4/2021 9:48am
nick610s wrote:
Yep Honda has released a reflash for this. Make sure they do it before you leave the dealer.
RCMXracing wrote:
Are you saying that the dealers have the improved maps? This is not the case according to Honda. I’ve spoken to American Honda and there are...
Are you saying that the dealers have the improved maps? This is not the case according to Honda.

I’ve spoken to American Honda and there are no recalls or product improvement bulletins for the EFI. Also have spoken to the dealer.

If the verified updated (blessed by Honda) maps are out there then the dealer could do it, but they most likely would charge for it. If certain mechanics at dealers are doing it and it’s not published by Honda then they are doing what you or I could with the EFI programmer dongle, software and a laptop. If they’re knowledgeable, then great! IMO you are paying for the knowledge... flashing it is easy.

Soooo someone in the know please publish the official improved maps!
nick610s wrote:
When did you speak to Honda? This literally came out last week. I’ve seen the official bulletin. Also my local dealer had the update as well...
When did you speak to Honda? This literally came out last week. I’ve seen the official bulletin. Also my local dealer had the update as well and is going to reflash my bike soon.
I spoke to them Monday 1 Feb. Can’t explain why they don’t know. The guy used 2 terms, recall and product improvement bulletin - two different things of which he said there were neither. This is great news.

And whoever is thumbs down happy on my post, whatever, I F’ng own this bike and just like others trying to get it sorted. Childish bullshit.
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mike_v812
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mike_v812 2/4/2021 9:57am
2/4/2021 9:57am
nick610s wrote:
I only know of one person that had it done and he said it’s a noticeable difference. He even had it done prior by one of...
I only know of one person that had it done and he said it’s a noticeable difference. He even had it done prior by one of the tuners and he said the Honda remap is better than the tuner remap. But I would assume they would rework all three to fix any low end stumble. I expect to get mine done by next week and I’ll check back.
mike_v812 wrote:
Ya check back!! for the money, and then having the suspension re-done it’s going to be like a 12k deal!!!:woohoo: but then to be chasing down...
Ya check back!! for the money, and then having the suspension re-done it’s going to be like a 12k deal!!!Woohoo but then to be chasing down an EFI issue eff that!!
I’ve always been a yz250 2 stroke guy tried a 250F last year not enough power. Thought I’d try 450 this year because I can’t pay what they’re asking for a yz250 2 stroke OTD
nick610s wrote:
Most new 450’s after suspension tuning most buy a pipe, and do a reflash.. also tons of people buy vortex stuff now. Are gonna be a...
Most new 450’s after suspension tuning most buy a pipe, and do a reflash.. also tons of people buy vortex stuff now. Are gonna be a 12k bill. Buy a couple year old bike to save some $.. most bikes within the last 5 years are more capable than the people riding them.
Ya that’s just it i just want to buy the thing(new) get some numbers and suspension work and ride it. Not concerned with pipes and all the other fancy stuff that’s why I was asking people if this ignition deal was getting resolved. Nothing worse then forking over the green and you got problems with basic performance. I get wanting to buy performance parts and all i just want a weekend warrior bike.
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nick610s
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nick610s 2/4/2021 11:00am
2/4/2021 11:00am
RCMXracing wrote:
Are you saying that the dealers have the improved maps? This is not the case according to Honda. I’ve spoken to American Honda and there are...
Are you saying that the dealers have the improved maps? This is not the case according to Honda.

I’ve spoken to American Honda and there are no recalls or product improvement bulletins for the EFI. Also have spoken to the dealer.

If the verified updated (blessed by Honda) maps are out there then the dealer could do it, but they most likely would charge for it. If certain mechanics at dealers are doing it and it’s not published by Honda then they are doing what you or I could with the EFI programmer dongle, software and a laptop. If they’re knowledgeable, then great! IMO you are paying for the knowledge... flashing it is easy.

Soooo someone in the know please publish the official improved maps!
nick610s wrote:
When did you speak to Honda? This literally came out last week. I’ve seen the official bulletin. Also my local dealer had the update as well...
When did you speak to Honda? This literally came out last week. I’ve seen the official bulletin. Also my local dealer had the update as well and is going to reflash my bike soon.
RCMXracing wrote:
I spoke to them Monday 1 Feb. Can’t explain why they don’t know. The guy used 2 terms, recall and product improvement bulletin - two different...
I spoke to them Monday 1 Feb. Can’t explain why they don’t know. The guy used 2 terms, recall and product improvement bulletin - two different things of which he said there were neither. This is great news.

And whoever is thumbs down happy on my post, whatever, I F’ng own this bike and just like others trying to get it sorted. Childish bullshit.
Well copy meisters photo and go to your local dealer and hit them up! All I can say. Whoever sold you the bike I hope would honor a remap.
nick610s
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nick610s 2/4/2021 11:02am
2/4/2021 11:02am
mike_v812 wrote:
Ya check back!! for the money, and then having the suspension re-done it’s going to be like a 12k deal!!!:woohoo: but then to be chasing down...
Ya check back!! for the money, and then having the suspension re-done it’s going to be like a 12k deal!!!Woohoo but then to be chasing down an EFI issue eff that!!
I’ve always been a yz250 2 stroke guy tried a 250F last year not enough power. Thought I’d try 450 this year because I can’t pay what they’re asking for a yz250 2 stroke OTD
nick610s wrote:
Most new 450’s after suspension tuning most buy a pipe, and do a reflash.. also tons of people buy vortex stuff now. Are gonna be a...
Most new 450’s after suspension tuning most buy a pipe, and do a reflash.. also tons of people buy vortex stuff now. Are gonna be a 12k bill. Buy a couple year old bike to save some $.. most bikes within the last 5 years are more capable than the people riding them.
mike_v812 wrote:
Ya that’s just it i just want to buy the thing(new) get some numbers and suspension work and ride it. Not concerned with pipes and all...
Ya that’s just it i just want to buy the thing(new) get some numbers and suspension work and ride it. Not concerned with pipes and all the other fancy stuff that’s why I was asking people if this ignition deal was getting resolved. Nothing worse then forking over the green and you got problems with basic performance. I get wanting to buy performance parts and all i just want a weekend warrior bike.
I am going to assume any later production 2021’s will be sorted out prior to them being sold. So I don’t think you have anything to worry about. And honestly this thing rips even with this “map issue”. I got my suspension being revalved and I’m excited to get back on it when it’s set for me.
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Rg43mx
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Rg43mx 2/4/2021 6:26pm
2/4/2021 6:26pm
Where is the link for the bulletin? I cant seem to find any info on a re flash. I contacted one dealership and they had no knowledge. Maybe I will contact another and see if they can get some information.
nick610s
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nick610s 2/7/2021 5:54pm
2/7/2021 5:54pm
Well i got my bike redone at my local dealer..
Took about 20-30 mins total from start to finish. They explained this is a total rewrite of the ecu programming and sensor parameters.

Anyway, bike runs way better off the bottom and throughout the rev range.. How it should have been from the factory. Still very manageable but it’s like power now when you want it.

Along with a suspension revalve and this thing is just about dialed.
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afk66
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afk66 2/10/2021 7:42am
2/10/2021 7:42am
I called around today in Maryland - nobody knows anything about it. Referenced the screen shot above and phone number for more information. No luck... So maybe it takes a couple of days for them to become aware?

mx317
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mx317 2/10/2021 7:49am
2/10/2021 7:49am
afk66 wrote:
I called around today in Maryland - nobody knows anything about it. Referenced the screen shot above and phone number for more information. No luck... So...
I called around today in Maryland - nobody knows anything about it. Referenced the screen shot above and phone number for more information. No luck... So maybe it takes a couple of days for them to become aware?

Find a better dealer.
Zycki11
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Zycki11 2/10/2021 8:02am
2/10/2021 8:02am
lumpy790 wrote:
I Know someone working on a fix for this but its not a remap
CraigCrashes wrote:
Up one size on the pilot jet and raise the needle one notch
Change the slide as well

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