Missing 10 Horsepower on '08 U.S. Fireblade? - Honda Motorcycles - FireBlades.org
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post #1 of 29 Old 08-04-2008, 4:49 PM Thread Starter
 
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Missing 10 Horsepower on '08 U.S. Fireblade?

I am hearing and reading a lot of rumours that the U.S. and Euro Spec ECU's are programmed differently limiting the horsepower on the U.S. version. 10 less RWHP is the number I've heard. Sport Rider magazine remapped and repiped theirs and couldn't fine the missing ponies. They claim the ECU is the culprit.


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post #2 of 29 Old 08-04-2008, 5:13 PM
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Re: Missing 10 Horsepower on '08 U.S. Fireblade?

Are the camshafts the same?
We just need somebody now to fit a UK ECU and harness to a US one and see if there's any difference.

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post #3 of 29 Old 08-04-2008, 5:41 PM Thread Starter
 
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Re: Missing 10 Horsepower on '08 U.S. Fireblade?

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Originally Posted by bladeracer View Post
Are the camshafts the same?
We just need somebody now to fit a UK ECU and harness to a US one and see if there's any difference.
If it's in the ECU, the part numbers will be different. I doubt that Honda would use different cams but always possible. If this is true then the European bike mags should be reporting the Blade as the most powerful of all the current crop of literbikes.

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post #4 of 29 Old 08-04-2008, 6:05 PM
 
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Re: Missing 10 Horsepower on '08 U.S. Fireblade?

This is what I found on a couple of UK sites

Quote:
Power 175.3bhp
Quote:
Despite the claims of 172bhp this is at the crank, so take off around ten per cent for a rear wheel figure and you’re left at a genuine 145bhp. Which isn’t exactly weedy. But the ‘Blade doesn’t feel like a 145bhp bike, well not in the intimidating way
Dont know if that helps with your query or not..

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post #5 of 29 Old 08-04-2008, 6:59 PM
 
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Re: Missing 10 Horsepower on '08 U.S. Fireblade?

I thought this had been covered here, but perhaps it was on another forum. Honda took timing out of the 10K+ RPM range and the power curve dips from there on up. Supposedly that was because the EPA noise levels are measured at an RPM which is at half of the power peak. So on US bikes the power peak is at 10k. Thus, the noise regulations are met at 5K RPM. If you look at two dyno graphs, you can clearly see the power drop off at 10k on US bikes where it is still climbing hard on bikes produced for other markets.
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post #6 of 29 Old 08-04-2008, 9:01 PM
 
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Re: Missing 10 Horsepower on '08 U.S. Fireblade?

145 sounds weak. Maholli's dyno'd at 158 or something. I need to find someone around here to dyno mine. If there is a difference between the european bikes and US I think it would be in the computer...timing curve. We have stricter speed limits here so you never know. Could just be rumors as well.
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post #7 of 29 Old 08-05-2008, 4:41 AM
 
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Re: Missing 10 Horsepower on '08 U.S. Fireblade?

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Originally Posted by S. A. Kruz View Post
...the U.S. and Euro Spec ECU's are programmed differently limiting the horsepower on the U.S. version. 10 less RWHP is the number I've heard. Sport Rider magazine remapped and repiped theirs and couldn't fine the missing ponies...
As already stated the ECU pulls timing on U.S. Fireblades above 10k rpm. This is to meet an EPA noise spec. Honda issued an official statement on this, so it's not a rumor.

The power can be recovered by using a Power Commander Ignition Module: Power Commander Downloads and Product Purchases, Maps, Installation Guides, Accessories

The '08 Fireblade is very fast even without this mod -- has a good torque curve. You can't just go by peak hp numbers.
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post #8 of 29 Old 08-05-2008, 6:47 PM
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Re: Missing 10 Horsepower on '08 U.S. Fireblade?

There will be another mod to get the power back without the IM. It should be available in around a month; currently under last minute testing.
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post #9 of 29 Old 08-05-2008, 8:52 PM
 
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Re: Missing 10 Horsepower on '08 U.S. Fireblade?

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There will be another mod to get the power back without the IM. It should be available in around a month; currently under last minute testing.
Whats the "IM"? Do you know which company is making it?
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post #10 of 29 Old 08-05-2008, 8:58 PM
 
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Re: Missing 10 Horsepower on '08 U.S. Fireblade?

Power Commander Ignition Module is the "IM", which I have on my bike..
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post #11 of 29 Old 08-05-2008, 9:34 PM
 
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Re: Missing 10 Horsepower on '08 U.S. Fireblade?

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Power Commander Ignition Module is the "IM", which I have on my bike..
I know I asked you a few weeks ago if the PC3 with a slip on was worth the 750 bucks and you said it was only worth like 3 horse at the wheel. How does it feel low end? There are so many people doing it...which doesn't mean anything really... what are the best mods? The Sato full system for 1500 (which as far as I know isn't out yet for the 08's) ? Isn't there any laptop programs which make a difference fuel wise? (pc just seems so generic?) What about the removing the flapper? Any suggestions that would be worth the money or time spent?
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post #12 of 29 Old 08-05-2008, 10:25 PM
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Re: Missing 10 Horsepower on '08 U.S. Fireblade?

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Originally Posted by 08silvercbr View Post
Whats the "IM"? Do you know which company is making it?
An individual, not a company. I cannot say anymore. If you want to modify the time, then this is not for you and the IM is what you want. This device will just undo what Honda did by manipulation.
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post #13 of 29 Old 08-05-2008, 10:35 PM
 
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Re: Missing 10 Horsepower on '08 U.S. Fireblade?

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An individual, not a company
Oh, I thought the IM was the ignition module, sorry... Anyways I was told Sato wasn't making an exhaust for the 08. I got rid of the slip-on and now I have a full system, pc3, ignition module, flapper.. I still only make around 160rwhp, which is plenty... I think performance wise the blade is great..
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post #14 of 29 Old 08-05-2008, 10:40 PM
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Re: Missing 10 Horsepower on '08 U.S. Fireblade?

The IM is the ignition module. We may have two options; the IM and this other product. The Im will allow you to change the IM to what you want/DJ lets you adjust. The other product is fixed and gives you and in essence makes your US ECU work like the UK.
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post #15 of 29 Old 08-05-2008, 11:55 PM
 
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Re: Missing 10 Horsepower on '08 U.S. Fireblade?

Any idea on price yet? Probably about the same as PC?
Maholli thats quite a bit of money you've spent...you feel you got your moneys worth then? I had a full system on my 98' but was previously on when I purchased the bike so had nothing to compare it to. I just know full systems are quite expensive...thats why I was wondering on improvement on low end. What gearing are you running?
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