just something i noticed when i was bored in the driveway

DIGItonium · 03-05-2011, 02:55 PM

That's normal. I think the ECU does that for emissions. If you install HFC, you can really hear the "hiss." It's pretty entertaining.

6MT · 03-05-2011, 02:58 PM

Quote:

Originally Posted by DIGItonium

That's normal. I think the ECU does that for emissions. If you install HFC, you can really hear the "hiss." It's pretty entertaining.

I wondered what it was over a year ago too. The HFC's really make it loud too.

SPOHN · 03-05-2011, 03:14 PM

Quote:

Originally Posted by DIGItonium

That's normal. I think the ECU does that for emissions. If you install HFC, you can really hear the "hiss." It's pretty entertaining.

I was told that also at one time. If I remember right, I was told that when you come out of the throttle the injectors shut down which also causes a lean condition to help with emissions.

03-05-2011, 02:55 PM	#1 (permalink)
DIGItonium A True Z Fanatic Join Date: Jan 2009 Location: Kansas Posts: 3,800 Drives: 09 Z34-TT 6MT Rep Power: 44	That's normal. I think the ECU does that for emissions. If you install HFC, you can really hear the "hiss." It's pretty entertaining. __________________

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