# Passing emmisions w/ Forced Induction **URL:** \ **Category:** PittSpeed Automotive\ **Created:** [January 17, 2005, 1:39pm UTC](https://forums.speedlife.net/t/passing-emmisions-w-forced-induction/171770 "2005-01-17T13:39:26Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![OptikalIllusion](https://avatars.discourse-cdn.com/v4/letter/o/eb8c5e/32.png) [@OptikalIllusion](https://forums.speedlife.net/u/OptikalIllusion)\ **Post date:** [January 17, 2005, 1:39pm UTC](https://forums.speedlife.net/t/passing-emmisions-w-forced-induction/171770/1 "2005-01-17T13:39:26Z")
Anybody know ways to pass emmissions w/ a turbo or supercharger? Right now i have a 2.5N/a engine i have plans for either a supercharger or turbo probably by next spring(06) so im curious as to how i can get away w/ this w/ passing emmisions? any tips? ---
**Author:** ![whitey](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/whitey/32/5911_2.png) [@whitey](https://forums.speedlife.net/u/whitey)\ **Post date:** [January 17, 2005, 1:42pm UTC](https://forums.speedlife.net/t/passing-emmisions-w-forced-induction/171770/2 "2005-01-17T13:42:20Z")
get a car pre obd2 ---
**Author:** ![eurodad](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/eurodad/32/5988_2.png) [@eurodad](https://forums.speedlife.net/u/eurodad)\ **Post date:** [January 17, 2005, 1:42pm UTC](https://forums.speedlife.net/t/passing-emmisions-w-forced-induction/171770/3 "2005-01-17T13:42:55Z")
a very good tune ---
**Author:** ![Sight\_N\_Sound](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sight_n_sound/32/5950_2.png) [@Sight\_N\_Sound](https://forums.speedlife.net/u/Sight_N_Sound)\ **Post date:** [January 17, 2005, 1:48pm UTC](https://forums.speedlife.net/t/passing-emmisions-w-forced-induction/171770/4 "2005-01-17T13:48:10Z")
just turn the switch to off. 😃 ---
**Author:** ![Pewter](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/pewter/32/5936_2.png) [@Pewter](https://forums.speedlife.net/u/Pewter)\ **Post date:** [January 17, 2005, 2:16pm UTC](https://forums.speedlife.net/t/passing-emmisions-w-forced-induction/171770/5 "2005-01-17T14:16:50Z")
[http://www.pittspeed.com/forums/showthread.php?t=3291](http://www.pittspeed.com/forums/showthread.php?t=3291) ---
**Author:** ![Gray05](https://avatars.discourse-cdn.com/v4/letter/g/cc9497/32.png) [@Gray05](https://forums.speedlife.net/u/Gray05)\ **Post date:** [January 17, 2005, 2:20pm UTC](https://forums.speedlife.net/t/passing-emmisions-w-forced-induction/171770/6 "2005-01-17T14:20:15Z")
I dont have a problem passing ---
**Author:** ![Sight\_N\_Sound](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sight_n_sound/32/5950_2.png) [@Sight\_N\_Sound](https://forums.speedlife.net/u/Sight_N_Sound)\ **Post date:** [January 17, 2005, 2:25pm UTC](https://forums.speedlife.net/t/passing-emmisions-w-forced-induction/171770/7 "2005-01-17T14:25:53Z")
Hey I have a question for you. On a 2.2 eco cav with a supercharger, it is having problems with a low efficent cat code. The piping is at 2.5 or 3 inch already. IF my buddy would take out the cat and replace it with a bigger longer cat would that help it out and give it more time to clean up the emissions? The computer was already reflashed when the kit was installed up at RSM. ---
**Author:** ![Gray05](https://avatars.discourse-cdn.com/v4/letter/g/cc9497/32.png) [@Gray05](https://forums.speedlife.net/u/Gray05)\ **Post date:** [January 17, 2005, 2:27pm UTC](https://forums.speedlife.net/t/passing-emmisions-w-forced-induction/171770/8 "2005-01-17T14:27:40Z")
why 3" exhaust on a cavi? ---
**Author:** ![Sight\_N\_Sound](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sight_n_sound/32/5950_2.png) [@Sight\_N\_Sound](https://forums.speedlife.net/u/Sight_N_Sound)\ **Post date:** [January 17, 2005, 2:54pm UTC](https://forums.speedlife.net/t/passing-emmisions-w-forced-induction/171770/9 "2005-01-17T14:54:43Z")
> [@Blue4](#): > > why 3" exhaust on a cavi? runninbg high boost on a stage two vortech… I think its 3 thats why I listed 2.5 to 3 wasn’t sure. really doesn’t matter main question is about the cat. ---
**Author:** ![Jeff95TA](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jeff95ta/32/5935_2.png) [@Jeff95TA](https://forums.speedlife.net/u/Jeff95TA)\ **Post date:** [January 17, 2005, 3:58pm UTC](https://forums.speedlife.net/t/passing-emmisions-w-forced-induction/171770/10 "2005-01-17T15:58:18Z")
Keep it under 5K and you’re exempt! ---
**Author:** ![Stroker](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/stroker/32/5948_2.png) [@Stroker](https://forums.speedlife.net/u/Stroker)\ **Post date:** [January 17, 2005, 4:15pm UTC](https://forums.speedlife.net/t/passing-emmisions-w-forced-induction/171770/11 "2005-01-17T16:15:40Z")
are long as your check engin light isent on or your under 5k your good ---
**Author:** ![Gray05](https://avatars.discourse-cdn.com/v4/letter/g/cc9497/32.png) [@Gray05](https://forums.speedlife.net/u/Gray05)\ **Post date:** [January 17, 2005, 4:16pm UTC](https://forums.speedlife.net/t/passing-emmisions-w-forced-induction/171770/12 "2005-01-17T16:16:00Z")
> [@Sight N Sound](#): > > runninbg high boost on a stage two vortech… > > I think its 3 thats why I listed 2.5 to 3 wasn’t sure. really doesn’t matter main question is about the cat. gut cat, replace shell around pipe… tune computer to shut off downstream o2’s voila no CEL ---
**Author:** ![Shaggy](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/shaggy/32/5945_2.png) [@Shaggy](https://forums.speedlife.net/u/Shaggy)\ **Post date:** [January 17, 2005, 4:22pm UTC](https://forums.speedlife.net/t/passing-emmisions-w-forced-induction/171770/13 "2005-01-17T16:22:02Z")
Mil eliminators ---
**Author:** ![Sight\_N\_Sound](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sight_n_sound/32/5950_2.png) [@Sight\_N\_Sound](https://forums.speedlife.net/u/Sight_N_Sound)\ **Post date:** [January 17, 2005, 4:28pm UTC](https://forums.speedlife.net/t/passing-emmisions-w-forced-induction/171770/14 "2005-01-17T16:28:10Z")
> [@Jeff95TA](#): > > Keep it under 5K and you’re exempt! its not my car, its my buddy and its way over 5000 for this year plus it is a brand new car (2004 bought with 6 miles on it) so the first year you must have it inspected and can’t get it exempt (that came from 3 inspection stations.) As for gutting and tuning he would like to keep it legal with out gutting and how the hell would you tune a car to shut off the second )2 sensor. Wouldn;t that throw codes or come up on the new ODBII testing… ---
**Author:** ![T70\_Tsi](https://avatars.discourse-cdn.com/v4/letter/t/898d66/32.png) [@T70\_Tsi](https://forums.speedlife.net/u/T70_Tsi)\ **Post date:** [January 17, 2005, 4:35pm UTC](https://forums.speedlife.net/t/passing-emmisions-w-forced-induction/171770/15 "2005-01-17T16:35:03Z")
um…properly done it shound’t have any problems passing ---
**Author:** ![Sight\_N\_Sound](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sight_n_sound/32/5950_2.png) [@Sight\_N\_Sound](https://forums.speedlife.net/u/Sight_N_Sound)\ **Post date:** [January 17, 2005, 4:37pm UTC](https://forums.speedlife.net/t/passing-emmisions-w-forced-induction/171770/16 "2005-01-17T16:37:24Z")
> [@BlueMeanieTSi](#): > > um…properly done it shound’t have any problems passing it was done buy a shop last february and went he got home about 2 months later it started throwing a code. I told him I think they have too small of a cat on there. :dunno: ---
**Author:** ![T70\_Tsi](https://avatars.discourse-cdn.com/v4/letter/t/898d66/32.png) [@T70\_Tsi](https://forums.speedlife.net/u/T70_Tsi)\ **Post date:** [January 17, 2005, 4:37pm UTC](https://forums.speedlife.net/t/passing-emmisions-w-forced-induction/171770/17 "2005-01-17T16:37:55Z")
no not you the original question ---
**Author:** ![T70\_Tsi](https://avatars.discourse-cdn.com/v4/letter/t/898d66/32.png) [@T70\_Tsi](https://forums.speedlife.net/u/T70_Tsi)\ **Post date:** [January 17, 2005, 4:40pm UTC](https://forums.speedlife.net/t/passing-emmisions-w-forced-induction/171770/18 "2005-01-17T16:40:56Z")
but to answer your question mike any sized cat should be enough to show a difference in 02 from pre to post cat…my guess is it’s throwing an “outside of value” crap code which means it’s too high or low for the ecu, did you try changing the sensor? ---
**Author:** ![Sight\_N\_Sound](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sight_n_sound/32/5950_2.png) [@Sight\_N\_Sound](https://forums.speedlife.net/u/Sight_N_Sound)\ **Post date:** [January 17, 2005, 4:44pm UTC](https://forums.speedlife.net/t/passing-emmisions-w-forced-induction/171770/19 "2005-01-17T16:44:44Z")
As in just replacing the sensor with a new one? No I don’t think he has tried that yet. ---
**Author:** ![grandamld9](https://avatars.discourse-cdn.com/v4/letter/g/48db29/32.png) [@grandamld9](https://forums.speedlife.net/u/grandamld9)\ **Post date:** [January 17, 2005, 6:12pm UTC](https://forums.speedlife.net/t/passing-emmisions-w-forced-induction/171770/20 "2005-01-17T18:12:01Z")
[http://www.highrevmotorsports.com/catalog/product\_info.php?products\_id=122](http://www.highrevmotorsports.com/catalog/product_info.php?products_id=122) Thats for the 2.4, i cant seem to find one for the 2.2, i guess they dont make them. but that would probably the best option. [http://www.j-body.org/forums/read.php?f=2&i=277558&t=277543#277558](http://www.j-body.org/forums/read.php?f=2&i=277558&t=277543#277558) [Next page](https://forums.speedlife.net/t/passing-emmisions-w-forced-induction/171770.md?page=2)