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I thought that the atmospheric DV's affect the ECU on the Skylines???

Can anyone confirm this???
 

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hi

Hi

i want flames too and taht sequential woosh when changing gear
will have to get hks sequential blow off valve!!


lee
 

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TRUST do a large single dump valve.

It can be connected for recirulate or vented. (all pipes inc.)

SVS DO THEM.

Cheers TOM:smokin:
 

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Discussion Starter #10
They don't affect the ECU per se.

When the standard valves dump, the air they dump is refed into the intake system, but on the turbo side of the AFM's - the ECU has already metered this air, and is feeding fuel to cope.

However, if you let the valves dump to atmosphere instead, and don't tell the ECU, then it puts too much fuel in. Then, you have unburnt fuel in the exhaust system, and if it's hot enough and you don't have a cat to get in the way, the fuel ignites for flames!
 

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Just a thought

Is it not possible that your lambda sensor then reads this running rich, and the mixture is adjusted accordingly. Meaning when you get back on the throttle you will be running momentarily lean?
 

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You'll find that most atmospheric venting valves just make your engine stall when you lift off. Usually have to fit an idle stabilizer.
 
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