NgkTr-6 Issues.... Please help me
K&N FIPK - SLP-85mm Mass - 3400 Stall - 160 Stat - HPP3 - SLP LoudM
Nos 5177 Kit - 150 shot
Here is my issue. I had NGKtr55 in my car for 15k gapped at .55 But recently put nos on car so tried to put ngk tr6's in First i gapped them at .45 (didn't idel good) so then i tried .55 (yea i know im dumb). Didnt work. So i put mine back in and car runs great again. (tr55) But recently i decided to try it again gapped at .34. Well the car shakes at idel but it feels great when i pin it to the floor.
Do i need a tune or something for the ngk6's or is that normal please someone let me know right now i have them in my car at .34 with MSD 8.5 Wires. They all installed great with no issues besides just a pain.

