Question...With my mods in my sig, will the 42# injectors make the engine run way too rich at idle w/o a tune? Just need to make a plan until I get it tuned.
Yes. It won't run very well at any RPM or throttle position without a tune.
2001 GTP Drag Car - XPZ, Tischler heads, Upsidedown M90 IC'd, e85, Gen V, 2.3 w/ 5%OD
2005 F350 6.0 - studded, deleted, tuned
2001 GTP - cam, headers, nitrous, stock trans - 11.83 @ 116 <$2k in mods - sold