Elephant in the room: rasp rasp rasp

[PMR818]

For reasons I’ve yapped about in other threads today, I’ve been driving on Map 0 with E30 in the tank which means my non-JB4 mods in my signatures are giving me gains. Dare I say the exhaust sounds better with no JB4 boost? I mean I can actually step on the gas pedal from 0 mph in auto-shift mode without squealing rasps from the exhaust. With the JB4 on, I get those pesky rasps begging me to downshift and to keep gunning it to higher and higher RPMs because only then do the rasps transform into a more tolerable racing noise.

 

[PMR818]

Talking to self, obvs - well lowering FF on JB4 has helped with rasp a bit…I think setting FF to 0 has been best

 

[PMR818]

Whine rasp really only happens when shifting at low RPMs…unavoidable sometimes when I drive like a granny,.