Rev Jump When Upshifting under Hard Acceleration

[ne_de5]

This is rev hang and injector cutoff delay rearing its head.

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[Fred 930]

I still have less than 1000 miles on my car. As such am still limiting maximum RPM to 4500. This "rev-hang" defect is the most annoying thing about the car. Perhaps it's something that I'll "get used to", but this 500 RPM over-rev represents a serious design flaw that will result in excessive clutch and drive-line wear. It's an inexcusable problem with a performance orientated vehicle.

I've driven manual transmission cars my entire life, presently have 4 of them, and (other than one other Japanese vehicle) have never seen this problem before. Shame on Honda. I hope they someday provide a software fix.

 

[Wolfman]

I still have less than 1000 miles on my car. As such am still limiting maximum RPM to 4500. This "rev-hang" defect is the most annoying thing about the car. Perhaps it's something that I'll "get used to", but this 500 RPM over-rev represents a serious design flaw that will result in excessive clutch and drive-line wear. It's an inexcusable problem with a performance orientated vehicle.

I've driven manual transmission cars my entire life, presently have 4 of them, and (other than one other Japanese vehicle) have never seen this problem before. Shame on Honda. I hope they someday provide a software fix.

Just curious, why limit the rpm for 1000 miles for "breaking in"?
I was thinking about doing that but at mile 25 I said f*ck it and full send

 

[Fred 930]

Just curious, why limit the rpm for 1000 miles for "breaking in"?
I was thinking about doing that but at mile 25 I said f*ck it and full send

It's a personal preference. I'll probably keep the car a long time, and early engine break-in simply seems like a smart thing to do. Some performance car manufacturers provide official guidelines (couldn't get any information from Acura), some even have electronic RPM limits enforced by the ECU up to 2000 miles. And I absolutely hate cars that burn oil. So a short break-in period is a small sacrifice versus the potential gain.

 

[Wolfman]

It's a personal preference. I'll probably keep the car a long time, and early engine break-in simply seems like a smart thing to do. Some performance car manufacturers provide official guidelines (couldn't get any information from Acura), some even have electronic RPM limits enforced by the ECU up to 2000 miles. And I absolutely hate cars that burn oil. So a short break-in period is a small sacrifice versus the potential gain.

I was trying to find some information but couldn't find a break in period. So I figured, we got a power train warranty for reason right!

 

[egxflash]

I was trying to find some information but couldn't find a break in period. So I figured, we got a power train warranty for reason right!

600 miles in the manual.

 

[optronix]

I still have less than 1000 miles on my car. As such am still limiting maximum RPM to 4500. This "rev-hang" defect is the most annoying thing about the car. Perhaps it's something that I'll "get used to", but this 500 RPM over-rev represents a serious design flaw that will result in excessive clutch and drive-line wear. It's an inexcusable problem with a performance orientated vehicle.

I've driven manual transmission cars my entire life, presently have 4 of them, and (other than one other Japanese vehicle) have never seen this problem before. Shame on Honda. I hope they someday provide a software fix.

As I've probably said before, don't hold your breath on a "software fix" from the manufacturer. Some makes are worse than others, but it is a fact of life with some makes going back at least 10 years (as you've noted, mostly Japanese). It's clearly annoying you more than most others, so your fix is going to be via aftermarket, or by moving on from the car. May as well come to terms with it now, the problem will not be going anywhere...

I was trying to find some information but couldn't find a break in period. So I figured, we got a power train warranty for reason right!

Just throwing it out there, but the problems associated from an improper break in probably wouldn't manifest until later on in the life cycle of the engine.

But you're not the only one who has this philosophy... just as others have stated there is a clear reference in the owners' manual for proper break in procedure so... good luck?

 

[Wolfman]

As I've probably said before, don't hold your breath on a "software fix" from the manufacturer. Some makes are worse than others, but it is a fact of life with some makes going back at least 10 years (as you've noted, mostly Japanese). It's clearly annoying you more than most others, so your fix is going to be via aftermarket, or by moving on from the car. May as well come to terms with it now, the problem will not be going anywhere...



Just throwing it out there, but the problems associated from an improper break in probably wouldn't manifest until

But you're not the only one who has this philosophy... just as others have stated there is a clear reference in the owners' manual for proper break in procedure so... good luck?

I’ll get back to you at 100k miles

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