Originally Posted by
swingtan
Post the tune and a list of mods.
FWIW, I've been trying (and failing badly ) to get an L98 based stroker to idle for the past couple of weeks. I tried all my usual tricks and this thing was just a dog. It's idle fine just sitting stationary but as soon as is transitioned from driving to stopping at the lights, it'd surge and stall. I spent hours on this and was ready to blame the NW TB, until his mechanic decided to try a swap the Fast manifold and NW TB for stock items. When he removed the Fast, he found one split runner and numerous others that were loose and flopping about. Fortunately all the screws / bolts were accounted for so nothing went through the motor. With the stock manifold and TB on, it idled fine with no changes to the tune....