2012 Civic Si Rev Hang - Software Update

so you never went in for the software update prior to your consumption testing?
 
Well I asked them to hook it up a couple weeks ago and they said they did and I have the most current software. I always thought the rev hang was a little excessive before. I didn't want to argue with them since Honda hasn't officially released a bulletin for this. And overall it's not that big of a deal to me, I know I'm going flashpro when its available so it's just a waiting game for me. But when I got the car back I did notice quite a difference in the rev hang. Again not gone completely, but it went from hanging for a total of about 2-3 seconds to about 1-2 seconds.
 
mongoose221 said:
the chief mechanic is wrong. stock V-TEC is right around 5k (might be 5k on the nose actually) and the hondata reflash clearly states that it VTEC engagement is unchanged.
also as you stated before, the software update DOES reduce revhang, 03 and 05 ARE different... it may not eliminate it completely but it does reduce it somewhat (and yes it is differently noticeable in different gears).
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I see the light too but I'm not sure the mechanic in Roseville was speaking about exactly the same thing. He seemed to be suggesting that a modest profile change occurs at 3500, not full VTEC. I'll check into that. Where did you get the info that VTEC occurs only at 5,000 and beyond?
 
WhiteFG4 said:
After getting my pistons replaced for oil consumption, I have noticed my rev hang to be about half as bad as it used to. I'm assuming they had to hook my car up to the mcvi reader while they reassembled my engine. Must have gotten the update. Regardless it does seem a little better. But I have a full race exhaust and it is really noticeable with a loud exhaust. Can't wait for flashpro to come out, hopefully it still fixes the rev hang like the reflash does.
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Does it normally take this long for FlashPro to come out? Has Hondata actually come out and said it's 'on the way'? Or is it possible (as some have speculated) that Hondata might forgo FlashPro on this engine because they're expecting it to be replaced shortly?
 
Bruce Bartlow said:
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Chief mechanic in Roseville, CA told me stock V-TECH kicks in at 3500rpm. (Reflashed V-TECH is higher) That would seem to suggest that keeping the engine under 3300/3400 is considerably better for MPG. Theoretically speaking, that is. Those in here seem to get mid-30's MPG at 60 - 70mph, which in 6th gear is what.... 3000 - 3500 RPM, right?
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Thanks for the clarification about Hondata's VTECH point. Guess what I meant to say the reflashed red line is higher, like 200rpm. Because of warranty issues, I'd prefer mine to stay the same, at least until 3 years/36,000 miles. I have every confidence the engine can take it... but your local Honda dealership will use "excess RPMs" as a possible way to void warranty coverage. If top RPM was unchanged, that point would be harder to make.
 
Bruce Bartlow said:
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Does it normally take this long for FlashPro to come out? Has Hondata actually come out and said it's 'on the way'? Or is it possible (as some have speculated) that Hondata might forgo FlashPro on this engine because they're expecting it to be replaced shortly?
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I don't believe this engine is going to be discontinued anytime shortly. There may be some hurdles to conquer but to my knowledge this engine will probably be around for awhile. Do you have any solid information that this engine is scheduled to be replaced shortly? A lot of people think that because of a few bad reviews (mainly for the interior and handling) that Honda is going to scrap the 9thgen and move right into a new design/style. This is a very small chance of happening. A few minor adjustments should be expected for the next model year (still a 9th gen with a k24z7 I will assume).

And I can't cite anything that flashpro is coming out, but it's pretty much a no brainer. I believe it took over a year or two for it to be available for the 8th gen.
 
WhiteFG4 said:
I don't believe this engine is going to be discontinued anytime shortly. There may be some hurdles to conquer but to my knowledge this engine will probably be around for awhile. Do you have any solid information that this engine is scheduled to be replaced shortly? A lot of people think that because of a few bad reviews (mainly for the interior and handling) that Honda is going to scrap the 9thgen and move right into a new design/style. This is a very small chance of happening. A few minor adjustments should be expected for the next model year (still a 9th gen with a k24z7 I will assume).

And I can't cite anything that flashpro is coming out, but it's pretty much a no brainer. I believe it took over a year or two for it to be available for the 8th gen.
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WhiteFG4 said:
I don't believe this engine is going to be discontinued anytime shortly. There may be some hurdles to conquer but to my knowledge this engine will probably be around for awhile. Do you have any solid information that this engine is scheduled to be replaced shortly? A lot of people think that because of a few bad reviews (mainly for the interior and handling) that Honda is going to scrap the 9thgen and move right into a new design/style. This is a very small chance of happening. A few minor adjustments should be expected for the next model year (still a 9th gen with a k24z7 I will assume).

And I can't cite anything that flashpro is coming out, but it's pretty much a no brainer. I believe it took over a year or two for it to be available for the 8th gen.
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Hey White... thanks for taking the time to respond so quickly. To the matter of an engine replacement, the reason I characterized the talk as "speculation" is because there IS no hard evidence.

As you know, like all Honda engines the k24z7 is virtually bulletproof. I particularly like the chain vs. belt design. Anyway, perhaps the engine's toughness is why Honda trusted this engine -- before many others -- in their upscale Acura TSX. For its part, Hondata has some inspiring comments about Honda engines in the LeMans endurance race that is a must read. (Something like "redline every 3 - 4 seconds for 24 hours straight" and it didn't break) Thanks also for your comments on FlashPro. I was unaware that FlashPro was introduced with such standard delay... although (now that i think about it) maybe that's because users have warranty concerns, causing them to drag their feet until the warranty has expired.

Wish I could join our many friends at the Tail this month... they drive for all of us!
 
8th car - first SI owners nov/dec 2005
8th hondata reflash - released June 2006
8th hondata flashpro - released May 2009

I pulled the 5k vtec quote from a press release, but I see that's wrong as well.

vtec.png


5,200-7k = ivtec indicator
 
webby said:
8th car - first SI owners nov/dec 2005
8th hondata reflash - released June 2006
8th hondata flashpro - released May 2009

I pulled the 5k vtec quote from a press release, but I see that's wrong as well.

vtec.png


5,200-7k = ivtec indicator
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I remember reading that too...but i swear that my first light comes on at 5k
 
I think the red dot comes on at 5k to let you know your about to engage vtec, then the first yellow one comes on at 5200 I believe.
 
webby said:
8th car - first SI owners nov/dec 2005
8th hondata reflash - released June 2006
8th hondata flashpro - released May 2009

I pulled the 5k vtec quote from a press release, but I see that's wrong as well.

vtec.png


5,200-7k = ivtec indicator
Click to expand...
Thanks, guys... you do great research. Those lights are pretty, for sure, but when they light up I generally have other things on my mind!
 
It is handy to have a "shift light" right on the main HUD. But I honestly shift by sound, and I rarely would ever need to take it to 8k, aaaaaaand if I did it has a fuel cut off anyways lol.
 
Thought I would pass on my experience with Jack Matia Honda in Elyria Ohio today. I brought my car in to have the rev hang software checked. The service department couldn't have been more helpful! They dropped what they were doing. Listened to my description and my request to hook up the computer. They never batted an eye. No problem was their answer. I watched them hook up the car and mine came down with no update - latest installed. Then they washed the car and told me to come back if something came up. These guys were great. Glad I bought my two hondas there and will buy the next one there. Great service department. My hang may not be that bad but the more you watch for it the more you see. I think. I really am very happy with the car and guess i will just learn to ignore the hang for now.
 
I took my 4dr Si back to the dealership a week after I bought it this month and complained about rev hang. I was told by an assistant Mgr in service that it's "rev match" that I'm experiencing, and that it is built in to make shifting easier/better?! More on that in a minute. I brought a few pages of this thread witht the software info so they'd have all they need to update my 7/12 build with software updates. The guy looked through the Honda service system, never hooked up the car, told me there's no update from Honda for this issue, and that my problem is not a problem, it's built in on purpose and called "rev match."

I called Honda NA and they opened a case. They said there's no such thing as "rev match" in Honda terminology and that there is no update for my car. I explained that the car is horrible as a "driver's car" with this rev hang, and that I would return the car if I could. I told them that I was aware of software fixes outside Honda but did not want to risk voiding my warranty. Long story short, Honda NA does not care. In my view, if rev hang is intentional, it amounts to the chickification of the tranny, and I hate it, especially around town. Maybe If I had never driven those V8 and old 4cyl BMW sticks as a younster, I wouldn't know that rev hang does not belong there. But I did, and I do care. To know that there's a software tweak to get rid of it and that Honda won't apply it is beyond frustrating.

It seems that I am either being lied to by Honda at all levels, or some folks have received some sunshine pumping from Honda that "fixed" their rev hang. Anyone have ideas about what to do next, short of voiding my warranty?
 
colint said:
Anyone have ideas about what to do next, short of voiding my warranty?
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Hondata has a reflash out right now that will help with the problem also increases red line and removes speed gov of 135. Hondata is also working on there flashpro (most everyone here is waiting for this) which is a multiple plug and play tuner that let's you do more
 
try another dealership... schedule an oil change (or some service) and ask the tech to hook it up while they're doing work? Hondata
 
colint said:
I took my 4dr Si back to the dealership a week after I bought it this month and complained about rev hang. I was told by an assistant Mgr in service that it's "rev match" that I'm experiencing, and that it is built in to make shifting easier/better?! More on that in a minute. I brought a few pages of this thread witht the software info so they'd have all they need to update my 7/12 build with software updates. The guy looked through the Honda service system, never hooked up the car, told me there's no update from Honda for this issue, and that my problem is not a problem, it's built in on purpose and called "rev match."

I called Honda NA and they opened a case. They said there's no such thing as "rev match" in Honda terminology and that there is no update for my car. I explained that the car is horrible as a "driver's car" with this rev hang, and that I would return the car if I could. I told them that I was aware of software fixes outside Honda but did not want to risk voiding my warranty. Long story short, Honda NA does not care. In my view, if rev hang is intentional, it amounts to the chickification of the tranny, and I hate it, especially around town. Maybe If I had never driven those V8 and old 4cyl BMW sticks as a younster, I wouldn't know that rev hang does not belong there. But I did, and I do care. To know that there's a software tweak to get rid of it and that Honda won't apply it is beyond frustrating.

It seems that I am either being lied to by Honda at all levels, or some folks have received some sunshine pumping from Honda that "fixed" their rev hang. Anyone have ideas about what to do next, short of voiding my warranty?
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A 7/12 build should have the ...50 update from the factory - You haven't experienced Rev Hang unless you've driven a ...30.
 
That is true...7/12 build would have the latest. Didn't think of that. Hondata is your only option at this point.
 
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