Official Honda Reflash Information - Page 14

TheDarkKnight · 06-27-2007, 10:47 AM

Quote:

Originally Posted by alexv305

Do you have the 07 SI Sedan? I bought mine in Feb and I have the same problem! It bogs going into 3rd and 4th and it feels like its losing power (even if i mash the gas) or something, then it gets up and going again. I also expirience rev hang (all gears) and surging (first gear). If there is a reflash for this year I hope they will use it on my car. I hope that my SRI and TB Spacer/Heatshield Gaskets, and TB Coolant bypass isnt going to make Honda come up with some BS reason on why those mods are causing my surging, bogging, and rev hang. Other than that the car is great!

Anyone else have these problems?

Well, I took my 07 Si coupe to Baron Honda in NY and they said there was nothing they noticed wrong. I showed them the TSB 06-052 and they said the car already has the newer software version in the ECU. I still have the problem described in the TSB. I guess I'll have to wait until Honda releases a newer version for the 07's.

**jasonandre** · 06-27-2007, 11:08 AM

Quote:

Originally Posted by TheDarkKnight

...they said the car already has the newer software version in the ECU.

Shocker.

alxwin · 06-29-2007, 03:59 AM

Hey this is really great info. My car does fall in that range but I went to a dealer in early may or late april during my maitenence check and they siad they dont know what Im talking about. Also will they reflash my ecu if i've modified my engine and voided the warranty (i have a nitrous kit installed)

plee7677 · 07-12-2007, 10:56 PM

Just got back from the dealership and they wouldnt reflash my ecu. They were saying something about the throttle being electrical or some bs

Tom1222 · 07-13-2007, 09:29 AM

Quote:

Originally Posted by plee7677

Just got back from the dealership and they wouldnt reflash my ecu. They were saying something about the throttle being electrical or some bs

Your throttle is electric (DBW) Drive by Wire. But that has nothing to do with the ECU update. Maybe your car already had the update if it is a newer/late 06 or any 07 model. The update came up in August of last year so if your car was built after August 06 it already incorporated the update. I had mine updated and I hardly felt any difference whatsoever.
So it isn't a big deal.

SI_ckness · 07-14-2007, 01:17 AM

just checked mine and it falls into the range i am goin to go down there 2morrow . i will post again after its done

macmonkey84 · 07-14-2007, 05:16 AM

I bought my Si last year in February and noticed this problem a while back. I'm in Germany now and will be back in three weeks to have this done, and I'll repost as to what the service department had to say about this issue and if there was any hassle. Where can I find a pdf version of the service bulletin?

windforce · 07-14-2007, 05:23 AM

My vTec kicks in at 4.5k rpm... and I have stock ECU...

SI_ckness · 07-14-2007, 09:12 PM

Quote:

Originally Posted by windforce

My vTec kicks in at 4.5k rpm... and I have stock ECU...

how.

Tom1222 · 07-14-2007, 11:23 PM

Quote:

Originally Posted by windforce

My vTec kicks in at 4.5k rpm... and I have stock ECU...

Not possible unless you have the Hondata Reflash

Si_Jeff · 07-24-2007, 04:00 PM

how can any 07 models be affected if the vin range says 6H...... ?

Si_Jeff · 07-24-2007, 04:02 PM

mine is 7H70377.. on the 1st post, he said 6h..... to 6H.....

07 Figi Blue Si · 08-16-2007, 09:54 PM

I think they did it for a better 0-60 and quarter times. When you take this car to redline at 8K and shift, with the rev hang issue, and the manual tranny issue of having to shift rather slow to not grind (due to fluid binding), has anyone ever noticed that the rpm falls right back to around 6K at the clutch disengagment point of the next gear??? And the V-TEC starts at 5.8K??? See any connection here?????? I sure do.

It allowed the car to stay in the "vtec power band" for all subsequent shifts. Now a Hondata reflash would solve this, lowering the vtec point, but as stock I believe it is an engineered performance enhancement to keep you fat in the power band. Any comments? Any takers??

I haven't read anything on this subject to this effect, but that is my observation, and unless I do a Hondata reflash, I kinda like the rev hang less being abnormal to typical manual shifting cars.

Now don't get me wrong. I do not believe that the engine designers at HMC knew this would happen, but after coupling such a light flywheel and seeing that at 8K this light spinning mass had no inertia to then slow it back down (ie: this is the real reason the revs hang-Honda Fits and I'm told some RX8s suffer from this as well), Honda engineers took advantage of it in the ECU programming to make it hang electronically longer that it actually does mechanically. That is why they can't completely eliminate it, becauser the mechanic side of this coin is a fixed variable, but rather they just improve it, by simply removing the code in the ECU that was designed to "let it hang-fat" for the next shift. That's what I think, and why I like rev hang.

This would be a very good test. Any of you that have had the rev hang reflashed should race one of you that hasn't. My bet would be on the stock rev hanger, who would probably get 1/10s from 0-60, and maybe 2-3/10s in the quarter. Someone please confirm or deny this theory, or anyone in N. CA whose dealer reflashed their car care to race to check this out? Preferrably some one with an Injen SRI, and no other mods like myself. That would be apples to apples.

07 Figi Blue Si · 08-17-2007, 03:10 PM

I am 709XXX and I have the symptoms too. I think the published range is too small, or maybe just the first set of more ranges to come. I think more of us out here have the hang than applies to the range of VINs that is published. Why is that? Is it documented that HMC, internationally and nation-wide, used a different ECU program for our vehicles (with numbers larger than the last) and if so, why are we still experiencing the same symptoms?

07 Figi Blue Si · 08-17-2007, 03:12 PM

Quote:

Originally Posted by Si_Jeff

mine is 7H70377.. on the 1st post, he said 6h..... to 6H.....

I'll bet it turns out to also be 7h ... to 7H. It wouldn't make senses to stop it mid-stream in a grouping like this.

macmonkey84 · 08-18-2007, 01:24 PM

I know some people have been stating the reflash didn't do much for them. My regards. I was fortunate enough, though, to have experienced a positive change as a result of having it reflashed. I'm sure it's true that it takes 20-30 min, but on the day I came in, they were busy, so I ended up waiting 90 minutes.

No more bucking or hesitation from the throttle in first gear when the engine is cold. The RPMs appear to drop faster, but not instantly, as soon as you let off the gas in 1st and 2nd. However, they do drop fast enough now that I have to change my driving still a little by giving it more gas when I shift from 1st to 2nd. The higher RPMs drop faster generally, and all around when the engine is warm. Flawless.

The throttle feels more responsive, due probably to the RPMs, and not as "laggy" as it was before. Of course, there isn't much of a big change at the high end, but the lower end with all the bucking was driving me crazy. Now I don't look like a retard trying to learn a manual transmission.

TPC303 · 08-22-2007, 09:18 PM

doe this apply to R18's?

TPC303 · 08-22-2007, 09:22 PM

will this reflash be for R18's as well?

j0onburr · 08-23-2007, 02:12 AM

gonna check here in chicago, Illinois...will find out by tomorrow afternoon and post.
**btw quik question to anyone willing to answer.. Is this ONLY a problem for the 06 si? or does the 07 si also fall into that vin catagory
http://www.8thcivic.com/forums/image...s/sadwavey.gif

aronhk_md · 08-23-2007, 04:48 AM

guess its time to bring mine in and have it done........busy isnt an excuse.....lol

08-16-2007, 09:54 PM	#273 (permalink)
07 Figi Blue Si Senior Member Join Date: Jul 2007 Location: N. Ca Posts: 199 Lance iTrader: 0 / 0%	Why they engineered "Rev Hang" I think they did it for a better 0-60 and quarter times. When you take this car to redline at 8K and shift, with the rev hang issue, and the manual tranny issue of having to shift rather slow to not grind (due to fluid binding), has anyone ever noticed that the rpm falls right back to around 6K at the clutch disengagment point of the next gear??? And the V-TEC starts at 5.8K??? See any connection here?????? I sure do. It allowed the car to stay in the "vtec power band" for all subsequent shifts. Now a Hondata reflash would solve this, lowering the vtec point, but as stock I believe it is an engineered performance enhancement to keep you fat in the power band. Any comments? Any takers?? I haven't read anything on this subject to this effect, but that is my observation, and unless I do a Hondata reflash, I kinda like the rev hang less being abnormal to typical manual shifting cars. Now don't get me wrong. I do not believe that the engine designers at HMC knew this would happen, but after coupling such a light flywheel and seeing that at 8K this light spinning mass had no inertia to then slow it back down (ie: this is the real reason the revs hang-Honda Fits and I'm told some RX8s suffer from this as well), Honda engineers took advantage of it in the ECU programming to make it hang electronically longer that it actually does mechanically. That is why they can't completely eliminate it, becauser the mechanic side of this coin is a fixed variable, but rather they just improve it, by simply removing the code in the ECU that was designed to "let it hang-fat" for the next shift. That's what I think, and why I like rev hang. This would be a very good test. Any of you that have had the rev hang reflashed should race one of you that hasn't. My bet would be on the stock rev hanger, who would probably get 1/10s from 0-60, and maybe 2-3/10s in the quarter. Someone please confirm or deny this theory, or anyone in N. CA whose dealer reflashed their car care to race to check this out? Preferrably some one with an Injen SRI, and no other mods like myself. That would be apples to apples.

08-18-2007, 01:24 PM	#276 (permalink)
macmonkey84 Senior Member Join Date: Apr 2006 Location: Tempe, AZ Posts: 112 Walter iTrader: 0 / 0%	Happy with Reflash I know some people have been stating the reflash didn't do much for them. My regards. I was fortunate enough, though, to have experienced a positive change as a result of having it reflashed. I'm sure it's true that it takes 20-30 min, but on the day I came in, they were busy, so I ended up waiting 90 minutes. No more bucking or hesitation from the throttle in first gear when the engine is cold. The RPMs appear to drop faster, but not instantly, as soon as you let off the gas in 1st and 2nd. However, they do drop fast enough now that I have to change my driving still a little by giving it more gas when I shift from 1st to 2nd. The higher RPMs drop faster generally, and all around when the engine is warm. Flawless. The throttle feels more responsive, due probably to the RPMs, and not as "laggy" as it was before. Of course, there isn't much of a big change at the high end, but the lower end with all the bucking was driving me crazy. Now I don't look like a retard trying to learn a manual transmission.

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06-29-2007, 03:59 AM	#263 (permalink)
alxwin Senior Member Join Date: Jun 2007 Location: The woodlands Posts: 157 Alex Nguyen iTrader: 0 / 0%	Hey this is really great info. My car does fall in that range but I went to a dealer in early may or late april during my maitenence check and they siad they dont know what Im talking about. Also will they reflash my ecu if i've modified my engine and voided the warranty (i have a nitrous kit installed)

07-12-2007, 10:56 PM	#264 (permalink)
plee7677 Senior Member Join Date: Jul 2007 Location: Chicago Posts: 145 Paul iTrader: 2 / 100%	Just got back from the dealership and they wouldnt reflash my ecu. They were saying something about the throttle being electrical or some bs

07-14-2007, 01:17 AM	#266 (permalink)
SI_ckness Senior Member Join Date: May 2007 Location: tacoma wa Posts: 124 Eric iTrader: 0 / 0%	just checked mine and it falls into the range i am goin to go down there 2morrow . i will post again after its done

07-14-2007, 05:16 AM	#267 (permalink)
macmonkey84 Senior Member Join Date: Apr 2006 Location: Tempe, AZ Posts: 112 Walter iTrader: 0 / 0%	I bought my Si last year in February and noticed this problem a while back. I'm in Germany now and will be back in three weeks to have this done, and I'll repost as to what the service department had to say about this issue and if there was any hassle. Where can I find a pdf version of the service bulletin?

07-14-2007, 05:23 AM	#268 (permalink)
windforce Senior Member Join Date: Apr 2007 Location: Bay Area, CA Posts: 562 iTrader: 0 / 0%	My vTec kicks in at 4.5k rpm... and I have stock ECU...

07-24-2007, 04:00 PM	#271 (permalink)
Si_Jeff Senior Member Join Date: Feb 2007 Location: NY Posts: 700 iTrader: 7 / 100%	how can any 07 models be affected if the vin range says 6H...... ?

07-24-2007, 04:02 PM	#272 (permalink)
Si_Jeff Senior Member Join Date: Feb 2007 Location: NY Posts: 700 iTrader: 7 / 100%	mine is 7H70377.. on the 1st post, he said 6h..... to 6H.....

08-17-2007, 03:10 PM	#274 (permalink)
07 Figi Blue Si Senior Member Join Date: Jul 2007 Location: N. Ca Posts: 199 Lance iTrader: 0 / 0%	I am 709XXX and I have the symptoms too. I think the published range is too small, or maybe just the first set of more ranges to come. I think more of us out here have the hang than applies to the range of VINs that is published. Why is that? Is it documented that HMC, internationally and nation-wide, used a different ECU program for our vehicles (with numbers larger than the last) and if so, why are we still experiencing the same symptoms?

08-22-2007, 09:18 PM	#277 (permalink)
TPC303 Senior Member Join Date: Aug 2007 Location: Denver, CO Age: 30 Posts: 266 Tim iTrader: 2 / 100%	doe this apply to R18's?

08-22-2007, 09:22 PM	#278 (permalink)
TPC303 Senior Member Join Date: Aug 2007 Location: Denver, CO Age: 30 Posts: 266 Tim iTrader: 2 / 100%	will this reflash be for R18's as well?

08-23-2007, 02:12 AM	#279 (permalink)
j0onburr Junior Member Join Date: Aug 2007 Location: Chicago, IL Posts: 1 Weezy B. iTrader: 0 / 0%	gonna check here in chicago, Illinois...will find out by tomorrow afternoon and post. **btw quik question to anyone willing to answer.. Is this ONLY a problem for the 06 si? or does the 07 si also fall into that vin catagory http://www.8thcivic.com/forums/image...s/sadwavey.gif

08-23-2007, 04:48 AM	#280 (permalink)
aronhk_md Member Join Date: Apr 2007 Posts: 50 iTrader: 0 / 0%	guess its time to bring mine in and have it done........busy isnt an excuse.....lol