# '93 del sol si Tachometer jumping around **URL:** \ **Category:** PittSpeed Automotive\ **Created:** [August 15, 2007, 8:26am UTC](https://forums.speedlife.net/t/93-del-sol-si-tachometer-jumping-around/191813 "2007-08-15T08:26:06Z")\ **Posts on this page:** 1\ **Showing post:** 38
**Author:** ![dyingwish](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/dyingwish/32/6041_2.png) [@dyingwish](https://forums.speedlife.net/u/dyingwish)\ **Post date:** [August 21, 2007, 6:49am UTC](https://forums.speedlife.net/t/93-del-sol-si-tachometer-jumping-around/191813/38 "2007-08-21T06:49:34Z")
> [@Should NYspeed have a main page?](https://forums.speedlife.net/t/should-nyspeed-have-a-main-page/32036/16): > > I assume the IAB’s are wired open or gutted then? If wired open, check wiring. Correct, gutted would be the best setup. That may explain why the problem isn’t visual…air velocity shooting through the runners will create turbulence to a point, after which it’ll equalized and severaly restrict airflow to that cylinder. Wiring them open will makes them close slightly under peak boost. This is assuming it’s only a cylinder or two affected by that. They are linked together so I doubt that is happening. --- _[View the full topic](https://forums.speedlife.net/t/93-del-sol-si-tachometer-jumping-around/191813)._