they do trap 98 when stock. modded k03 s4 have trapped 114, but thats rare. most will trap 105-108, k04 cars are now up to 120-124 and are starting to consistatnly hit high 11’s. there are a few ful weight low 11 s4’s but they are not plain k04 cars. i know of an s4 that has some pretty serious work done to it that has hit low 11’s with only the rear seat out, street tires and no juice. trap was 124. highest stock exhaust manifold trap is 128 afaik.