was it doing this while at wot?

 

50-75% i would say. not quite wot. i went wot once and it didn't do it at all. and a few runs after that it didn't but then it started doing it. here is my thread so i don't hijack this one. https://www.performancetrucks.net/fo...d.php?t=413013

 

that would be your bov or compresor surge.

 

well, the bov makes a woowooowoo sound. so maybe compressor surge but the turbo is only a 66.5mm. surly its not to big. or does it appear to be too big if your at half throttle and 7-10psi. actualy 40-50% throtle.

 

the turbos go woo WOOOOO

 

i remember that vid it was funny as hell. but my bov does go woowoowoowoo with a bit of wooossshhhhh in there too.

 

i dont know for sure what that sound is but i have had it happen before. something about mid throttle. you might be able to tighten up or loosen your bov spring but then again that may not help.

 

i plumed mine into its own 3" exhaust tip out the side of the truck so it looks like I have dual side exit exhaust, really one is wastegate, one is exhaust. It took some creative expansions but it looks awesome and is loud as hell. Only giveaway is if I dont keep them clean looks like one bank is burning oil