Strange Rapid Fire Sound?

[malave7567]

Originally Posted by 2016 Camaro SS

Interesting, I'll give this a try on this gas tank. I've always heard people talk about "neutral cruising" when going down a hill up to a stoplight like it's the greatest thing, but that does make sense.

All OBD-II equipped vehicles are supposed to do this. I clutch in and go to neutral right before I'm about to finish stopping (usually sub-15mph, and I'm normally still in 3rd). If you are used to cruising in neutral for a considerable distance, you may notice a slight difference in mpg, nothing huge. Neutral cruising down a hill though... that just is dangerous. Usually leads to people riding their brakes and overheating them.

Edit: If you ever see anyone's datalogs on the forum, linked to datazap website, notice that when they let off the throttle completely, the AFR's jump sky-high to max (like 20), because there is no fuel being injected anymore.

[Vroomin86]

Very surprised no one has mentioned the known and common flywheel noise on these cars. There's nothing wrong with your brz, my FRS and every other twin out there will do this when coming to a slow stop out of gear.

http://www.ft86club.com/forums/showthread.php?t=12429

[2016 Camaro SS]

Originally Posted by Vroomin86

Very surprised no one has mentioned the known and common flywheel noise on these cars. There's nothing wrong with your brz, my FRS and every other twin out there will do this when coming to a slow stop out of gear.

http://www.ft86club.com/forums/showthread.php?t=12429

I get that occasionally. It's done it ever since I got the car back in November of 2012. Not very consistent though, just occasionally.

[Vroomin86]

Originally Posted by 2016 Camaro SS

I get that occasionally. It's done it ever since I got the car back in November of 2012. Not very consistent though, just occasionally.

You might not hear it all the time because it's a specific mechanical situation but it's done it and it will continue to. Just as OPs and mine and everyone else in this thread. Follow the directions on the thread I posted to replicate the noise and I bet you'll get the noise every time.

[steve99]

Originally Posted by Vroomin86

Very surprised no one has mentioned the known and common flywheel noise on these cars. There's nothing wrong with your brz, my FRS and every other twin out there will do this when coming to a slow stop out of gear.

http://www.ft86club.com/forums/showthread.php?t=12429

Originally Posted by 2016 Camaro SS

I get that occasionally. It's done it ever since I got the car back in November of 2012. Not very consistent though, just occasionally.

Looks like you guys have have ability to adjust tune (OFT)

You idle will already be 750

but go to the PI/DI tables and make it run 100% DI at load 0.2 for manual and 0.2/0.3 for auto

worked for me no rattly sound in neutral, no A/C idle dips and smoother takeoff (manual trans)



set all 3 PI/DI ratio tables cold/warm/hot to have full DI up to 0.3 g/rev load (see figure)
If you have manual trans probably just up to 0.2g/rev will do.

ztan put me onto this

[Vroomin86]

Originally Posted by steve99

Looks like you guys have have ability to adjust tune (OFT)

You idle will already be 750

but go to the PI/DI tables and make it run 100% DI at load 0.2 for manual and 0.2/0.3 for auto

worked for me no rattly sound in neutral, no A/C idle dips and smoother takeoff (manual trans)



set all 3 PI/DI ratio tables cold/warm/hot to have full DI up to 0.3 g/rev load (see figure)
If you have manual trans probably just up to 0.2g/rev will do.

ztan put me onto this

I am actually on the stage 1 93 octane flash. To make these adjustments you mention do they have to be done in RomRaider?

Could you perhaps post a screen shot of what the table is supposed to look like once it's done.

[Tcoat]

Originally Posted by 2016 Camaro SS

Interesting, I'll give this a try on this gas tank. I've always heard people talk about "neutral cruising" when going down a hill up to a stoplight like it's the greatest thing, but that does make sense.

On the subject of neutral cruising, coasting down hills in neutral (or even with clutch in) or anytime you do not have a MT car in gear while moving I will summarize the effects in words of my Army driving instructor instructor from many years ago:

"What the fuck are you doing you stupid mother fucker you fucking well just turned a fucking ten fucking ton truck into a fucking uncontrolled fucking soap fucking box racer. You dumb fuck" (Ya, the guy was a blast to be around in restaurants and other public places)

[2016 Camaro SS]

The things you learn after years of doing it wrong.... lol. It's all clicking now.

[steve99]

Originally Posted by Vroomin86

I am actually on the stage 1 93 octane flash. To make these adjustments you mention do they have to be done in RomRaider?


Could you perhaps post a screen shot of what the table is supposed to look like once it's done.

Yes you will need romraider

see links below


I'm pretty sure the di/pi tables are same in the stage1/2 petrol tunes.

As the above table shows just zero out the 0.2 column in all three di/pi tables

the above table shows 0.2 and 0.3 load columns zeroed , pretty sure that was the OFT pi/di table.

post up you table from your tune and I will have a look

[Tcoat]

Originally Posted by 2016 Camaro SS

The things you learn after years of doing it wrong.... lol. It's all clicking now.

The problem with driving MT is that depending on what you are doing and your particular style there are probably 100 way of doing it "right". I bet we would have a very tough time getting 6 people to agree on a the "proper" way to clutch and shift on our cars alone much less agree to a general rules that appy across the board.

[2016 Camaro SS]

Originally Posted by Tcoat

The problem with driving MT is that depending on what you are doing and your particular style there are probably 100 way of doing it "right". I bet we would have a very tough time getting 6 people to agree on a the "proper" way to clutch and shift on our cars alone much less agree to a general rules that appy across the board.

Next thread topic: "When parked, should I put the car in neutral or in gear? E-brake or no E-brake?"

[Tcoat]

Originally Posted by 2016 Camaro SS

Next thread topic: "When parked, should I put the car in neutral or in gear? E-brake or no E-brake?"

Again lucky if can have 6 guys agree but there are less options so just maybe...

I am of the in gear, brake on crowd but I grew up in the era where e/p brakes were untrustworthy things that were foot operated and general seized up solid within the first year anyway.

[2016 Camaro SS]

Originally Posted by Tcoat

Again lucky if can have 6 guys agree but there are less options so just maybe...

I am of the in gear, brake on crowd but I grew up in the era where e/p brakes were untrustworthy things that were foot operated and general seized up solid within the first year anyway.

Yeah, I pretty much just stick with this:

If hill, gear: yes e-brake: yes

If no hill, gear: no e-brake: yes


But then there's also

If no hill, gear: yes e-brake: no

Last two options I don't think matters either way on transmission stress. We're way off topic now.

[Tcoat]

Originally Posted by Synkronicity

Yep, took it to a dealer, I'm completely overthinking and overly anxious. They said it was nothing and I should stop worrying about all the small sounds LOL.
I will be practicing my downshifting, I'm taught to always clutch whenever I touch the shifting knob so that's already wired into my brain.

Originally Posted by 2016 Camaro SS

We're way off topic now.

Original issue resolved. Still sort of on topic anyway.