# so i guess my car is slow **URL:** \ **Category:** Shift518 Automotive\ **Created:** [August 25, 2011, 7:23pm UTC](https://forums.speedlife.net/t/so-i-guess-my-car-is-slow/260168 "2011-08-25T19:23:34Z")\ **Posts on this page:** 1\ **Showing post:** 87
**Author:** ![SSmokinn\_SS](https://avatars.discourse-cdn.com/v4/letter/s/ec9cab/32.png) [@SSmokinn\_SS](https://forums.speedlife.net/u/SSmokinn_SS)\ **Post date:** [August 27, 2011, 12:45pm UTC](https://forums.speedlife.net/t/so-i-guess-my-car-is-slow/260168/87 "2011-08-27T12:45:58Z")
> [@wtf crazy hizzzzoes](https://forums.speedlife.net/t/wtf-crazy-hizzzzoes/44928/4): > > That’s a lot of pre-load on the lifters, definitely surprised you have 7.425’s. TSP rumbler is the same idea as the SLP loud mouth, and your air lid is SLP blackwing which was an optional part over the regular one. I have bassani mufflers in my rumbler and my air lid is not a black wing. Its just a smooth lid. Blackwings say SLP on them and “blackwing” in the lower right corner. Mine does say either. Not to mention it would say it on my door jam on the SLP upgrades. Doesnt say it. --- _[View the full topic](https://forums.speedlife.net/t/so-i-guess-my-car-is-slow/260168)._