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I noticed a slight breakup in the exhaust growl at WOT in 3rd and 4th andwas wondering if anyone else had this.
Sounds almost like the engine could be skipping. I think I notice it most because of the slower rev up at those "highway" speeds. Seems like at about 4500+ the exhaust growl starts to sound a little broken up.
know we run rich at WOT but could it be running to rich? I run Sunoco 94 Ultra all the time. Car still pulls like a mule the whole time.
I noticed a slight breakup in the exhaust growl at WOT in 3rd and 4th andwas wondering if anyone else had this.
Sounds almost like the engine could be skipping.... Seems like at about 4500+ the exhaust growl starts to sound a little broken up.
Yes, my 01 made that sound in same circumstances you mention. I never was able to determine the origin or cause. But, like you, I never noticed any dimunition of performance. Quite the contrary, it was a strong running engine and produced good results on the dragstrip....But it did make that noise at WOT high in the rpm band.
I can't hear that sound in my 02. It may still be there but the absense of the pup-cats makes the interior much louder at WOT.
I plan on getting the LS1 Edit software somtime soon so I can start to mod. Gonna start slow and gradually work her up. :yesnod: Anyone know if the software will help me determine what the deal is?