F430 Exhaust Valve Vacums - Ferrari Life
 
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post #1 of 11 Old 03-22-2012, 04:03 PM Thread Starter
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Exhaust Valve Vacums

Sorry if its been asked numerous times.
Can you seal off the exhaust valve pipes without damage to the engine etc.
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post #2 of 11 Old 03-22-2012, 08:20 PM
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Gary- No problem. Only the F355 has a problem with the bypass valve being open all the time, and it is in a different location. The 360 and F430 work fine with the bypass valve vacuum lines blocked.

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post #3 of 11 Old 03-22-2012, 11:53 PM
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Gary, no problems to do so, the ECU's won't notice it. But it's not a good practice to cold start the engine with the exhaust valves opened. The cats will take much more time the get to the operating temperature and as a consequence, the lambda heaters will have to work longer as usual. Also, the cats will have recieve a largly enriched mixture for a much longer time. I scoped it and the difference with the valves open/close is quite big. Not an issue if done a couple of times but may be an issue if done all the time during years. Consider a remote control unit
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post #4 of 11 Old 03-23-2012, 12:17 AM Thread Starter
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Just know that on the v8vantage it was standard practice to remove fuse 22 with no known problem.
I personally had a quick silver fitted.
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post #5 of 11 Old 03-23-2012, 01:36 AM
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Good to know If you disconnect the power of the F430 solenoid valves, you'll get a CEL as they are monitored by the Motronic ECU's
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post #6 of 11 Old 03-23-2012, 01:44 AM Thread Starter
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So you think its best left as standard or switched system
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post #7 of 11 Old 03-23-2012, 02:38 AM
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I definitely would recommend a remote switch which will leave a clean installation and let the valves closed at cold start. Closed valves improves also the car drivability when the engine is still cold.
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post #8 of 11 Old 03-23-2012, 06:34 AM Thread Starter
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Where from
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post #9 of 11 Old 03-23-2012, 10:06 AM
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Gary- Capristo makes a remote valve control that is very easy to install. You remove the factory solenoid from its connector, the Capristo remote device plugs into the original connector, and the factory solenoid plugs into the Capristo device. Run a ground wire and you are done. Bad news is ~$600.

On the front engine cars like the AMs and Maranellos, the long exhaust system creates enough back pressure so opening the bypass valves all the time has no affect, except on noise.

Taz
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post #10 of 11 Old 03-23-2012, 11:29 AM Thread Starter
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Cheers Taz,thanks for info m8
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post #11 of 11 Old 03-23-2012, 11:39 AM
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Gary, you find back the installation guide I wrote once overthere. I have to update it and add it in the F430 book here :

DIY F430 Capristo Remote Unit Installation - FerrariChat.com
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