430 Anybody Set Their Exhaust Valves To Closed?

" closed all the time"

So when you're giving it to her (spirited drive) wouldn't that be like having someone choke you during sex? Sorry, I know this is of no help but it was all I could think of, lol

By doing that aren't you preventing hot exhaust gases (spent) from leaving the engine as quickly and efficiency as possible?
In your case wouldn't it raise the temp in the exhaust system and eventually back up to the engine components causing overheating.
I'm not a Tech but logically that can't be good to do.

 

I wouldn't recommend that. The closed valve route is extremely restrictive even at low RPM. The elevated back pressure will cause all sorts of issues such as heat and crankcrase blow-by, let alone seriously diminished performance.

 

Depending on destination market and mapping done Ferrari have experimented with valve opening times quite a bit on both 360 and F430..

The highest (closed) mapped I've seen the factory do it is valves being closed and only opening at a rather high 6,000 rpm and fully opened by 6,200rpm if you apply more than 69% Throttle. You'll notice from the map shown the factory deem it OK to have valves closed even at max RPM as long as your under 69% throttle which is when the valves begin opening and are fully opened by 81% throttle and over 6,200rpm...

 

Just a bit of clarification, 0.0 = closed. 1.0 = half open state, 2.0 = fully open state.

 

As can be seen from the charts even Ferrari in some noise restricted markets left valves closed to max rpm limiter if under 69% throttle so it's definitely possible to drive with valves closed under all but peak rpm conditions. If you where tracking the car at high rpm for long periods I would suspect as Mark pointed out heat soak could be a serious issue but i think Ferrari assume you'll be using it on the road and not heavy track usage for their test conditions. Probably a slow down light or other CEL would illuminate before it became critical.

On challenge racers there's no cats, free flowing back box which is fully insulated to prevent heat soak in surrounding areas and they have a lexan window with air ducting into the engine bay which obviously improves cooling too.

 

I have the remote button but they still open by themselves at high rpm

 

Just so that you have correct information. The remote lets you open the valves at will but the car still functions as normal when the remote is not on. ....meaning when remote is not used the valve is not alway closed. When you hit a certain rpm the valves will open. They are never permanately closed.

 

You should talk to Felix from Kline. I'm sure he can make any configuration you want and it's really nice stuff .

 

I was staring at my controllers and I’m about to replace bottom skin— is there an easy way to temporarily get valves open ? Is it the small hose with a clamp?

Also— it seems that valves open without full throttle around town.

 

Just a FYI... I'll release an app shortly for Android (followed by IOS at a later date) which allows you to swap exhaust valve maps on the fly as well as turn them off/on. You can even adjust the valve opening bark time on first engine turn on when cold. This is configured from factory on 360 and F430 at 2.5 seconds... So if its 0 the engine won't bark at all on engine start, useful for quiet (ish) getaways early morning.

These features will require no wiring, just a plug in and play OBD Wifi/Bluetooth dongle that I will supply and your Ignition ECU's will require adaptation using Swiss Army Knife software. I plan to add features regularly to it so this is just one of many...

 

What are the corresponding ignition tables like for this map compared to a market with valves opening earlier?

 

Disregard my question on how to get them to stay open. I think I’ll leave it alone. (I thought It might be better at Willow Springs Raceway this weekend.)