# G8 Long tubes **URL:** \ **Category:** Shift518 Automotive\ **Created:** [December 30, 2010, 3:23pm UTC](https://forums.speedlife.net/t/g8-long-tubes/256218 "2010-12-30T15:23:56Z")\ **Posts on this page:** 20\ **Page:** 2
**Author:** ![IOM\_G8\_GT\_888](https://avatars.discourse-cdn.com/v4/letter/i/5f8ce5/32.png) [@IOM\_G8\_GT\_888](https://forums.speedlife.net/u/IOM_G8_GT_888)\ **Post date:** [December 31, 2010, 12:07pm UTC](https://forums.speedlife.net/t/g8-long-tubes/256218/21 "2010-12-31T12:07:19Z")
Why should’nt I worry about them? ---
**Author:** ![88slowmarro](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/88slowmarro/32/6339_2.png) [@88slowmarro](https://forums.speedlife.net/u/88slowmarro)\ **Post date:** [December 31, 2010, 12:08pm UTC](https://forums.speedlife.net/t/g8-long-tubes/256218/22 "2010-12-31T12:08:18Z")
just use a simulator , or have em tuned out man . running with out cats will open a lot more exh options ---
**Author:** ![IOM\_G8\_GT\_888](https://avatars.discourse-cdn.com/v4/letter/i/5f8ce5/32.png) [@IOM\_G8\_GT\_888](https://forums.speedlife.net/u/IOM_G8_GT_888)\ **Post date:** [December 31, 2010, 12:10pm UTC](https://forums.speedlife.net/t/g8-long-tubes/256218/23 "2010-12-31T12:10:16Z")
What about Inspections? ---
**Author:** ![88slowmarro](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/88slowmarro/32/6339_2.png) [@88slowmarro](https://forums.speedlife.net/u/88slowmarro)\ **Post date:** [December 31, 2010, 12:11pm UTC](https://forums.speedlife.net/t/g8-long-tubes/256218/24 "2010-12-31T12:11:11Z")
lolol , alll ya gotta do is know someone man . mine never fails ---
**Author:** ![IOM\_G8\_GT\_888](https://avatars.discourse-cdn.com/v4/letter/i/5f8ce5/32.png) [@IOM\_G8\_GT\_888](https://forums.speedlife.net/u/IOM_G8_GT_888)\ **Post date:** [December 31, 2010, 12:16pm UTC](https://forums.speedlife.net/t/g8-long-tubes/256218/25 "2010-12-31T12:16:56Z")
IDK it just seems like I should put cats back on the system lol Will high flowing cats really hurt the HP that much? ---
**Author:** ![Johawk](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/johawk/32/6284_2.png) [@Johawk](https://forums.speedlife.net/u/Johawk)\ **Post date:** [December 31, 2010, 12:19pm UTC](https://forums.speedlife.net/t/g8-long-tubes/256218/26 "2010-12-31T12:19:05Z")
do the G8s have 4 cats? I know some of the newer GMs are using precats now. get some high flow random tech cats or your headers are just a freeway to a brick wall. ---
**Author:** ![IOM\_G8\_GT\_888](https://avatars.discourse-cdn.com/v4/letter/i/5f8ce5/32.png) [@IOM\_G8\_GT\_888](https://forums.speedlife.net/u/IOM_G8_GT_888)\ **Post date:** [December 31, 2010, 12:19pm UTC](https://forums.speedlife.net/t/g8-long-tubes/256218/27 "2010-12-31T12:19:11Z")
1 7/8" or 1 3/4"? ---
**Author:** ![IOM\_G8\_GT\_888](https://avatars.discourse-cdn.com/v4/letter/i/5f8ce5/32.png) [@IOM\_G8\_GT\_888](https://forums.speedlife.net/u/IOM_G8_GT_888)\ **Post date:** [December 31, 2010, 12:20pm UTC](https://forums.speedlife.net/t/g8-long-tubes/256218/28 "2010-12-31T12:20:00Z")
Oh im definately getting different cats not re-using stocks… and the 09 g8’s have 4 cats ---
**Author:** ![88slowmarro](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/88slowmarro/32/6339_2.png) [@88slowmarro](https://forums.speedlife.net/u/88slowmarro)\ **Post date:** [December 31, 2010, 12:22pm UTC](https://forums.speedlife.net/t/g8-long-tubes/256218/29 "2010-12-31T12:22:28Z")
id use the 1 7/8 there a great size and wont have any problems . ya can use high flow cats if ya want there not gonna hurt ya at all , besides popular belief ---
**Author:** ![Johawk](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/johawk/32/6284_2.png) [@Johawk](https://forums.speedlife.net/u/Johawk)\ **Post date:** [December 31, 2010, 12:23pm UTC](https://forums.speedlife.net/t/g8-long-tubes/256218/30 "2010-12-31T12:23:11Z")
I think I would go with the 1 3/4" to maintain some torque for that big heavy car. depends on if you want to go for a big cam and heads or blower later down the road. Even then the 1 3/4" will be enough. There will just be some top end left on the table with more mods. On second thought. I would go big or go home. I have wanted t kick myself later on for being conservative. ---
**Author:** ![IOM\_G8\_GT\_888](https://avatars.discourse-cdn.com/v4/letter/i/5f8ce5/32.png) [@IOM\_G8\_GT\_888](https://forums.speedlife.net/u/IOM_G8_GT_888)\ **Post date:** [December 31, 2010, 12:23pm UTC](https://forums.speedlife.net/t/g8-long-tubes/256218/31 "2010-12-31T12:23:58Z")
There will be a Magnacharger on it in the future ---
**Author:** ![88slowmarro](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/88slowmarro/32/6339_2.png) [@88slowmarro](https://forums.speedlife.net/u/88slowmarro)\ **Post date:** [December 31, 2010, 12:24pm UTC](https://forums.speedlife.net/t/g8-long-tubes/256218/32 "2010-12-31T12:24:26Z")
that little bit isnt gonna hurt em at all . ---
**Author:** ![Johawk](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/johawk/32/6284_2.png) [@Johawk](https://forums.speedlife.net/u/Johawk)\ **Post date:** [December 31, 2010, 12:30pm UTC](https://forums.speedlife.net/t/g8-long-tubes/256218/33 "2010-12-31T12:30:30Z")
> [@CRX\>stage 2 SRT4](https://forums.speedlife.net/t/crx-stage-2-srt4/37965/330): > > that little bit isnt gonna hurt em at all . Thats what she said ---
**Author:** ![IOM\_G8\_GT\_888](https://avatars.discourse-cdn.com/v4/letter/i/5f8ce5/32.png) [@IOM\_G8\_GT\_888](https://forums.speedlife.net/u/IOM_G8_GT_888)\ **Post date:** [December 31, 2010, 12:31pm UTC](https://forums.speedlife.net/t/g8-long-tubes/256218/34 "2010-12-31T12:31:20Z")
If i get em from [marylandspeed.com](http://marylandspeed.com) they give you a free coating too I’m pretty sure. The worst part is thinking about how to setup from my headers to my catback throwing a cat in the middle at the same time… ---
**Author:** ![88slowmarro](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/88slowmarro/32/6339_2.png) [@88slowmarro](https://forums.speedlife.net/u/88slowmarro)\ **Post date:** [December 31, 2010, 12:33pm UTC](https://forums.speedlife.net/t/g8-long-tubes/256218/35 "2010-12-31T12:33:46Z")
go for a full system if ya can dude , its way easier and if ya need to to pull it apart it will come aprt as shit isnt cobbed in there ---
**Author:** ![Johawk](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/johawk/32/6284_2.png) [@Johawk](https://forums.speedlife.net/u/Johawk)\ **Post date:** [December 31, 2010, 12:34pm UTC](https://forums.speedlife.net/t/g8-long-tubes/256218/36 "2010-12-31T12:34:56Z")
Are you knocking my pieced together borla cat back? LoL ---
**Author:** ![IOM\_G8\_GT\_888](https://avatars.discourse-cdn.com/v4/letter/i/5f8ce5/32.png) [@IOM\_G8\_GT\_888](https://forums.speedlife.net/u/IOM_G8_GT_888)\ **Post date:** [December 31, 2010, 12:38pm UTC](https://forums.speedlife.net/t/g8-long-tubes/256218/37 "2010-12-31T12:38:03Z")
I dont want the shit to be too loud… then I’ll have to take off my cat-back and try to sell it and take a hit on that also… ---
**Author:** ![IOM\_G8\_GT\_888](https://avatars.discourse-cdn.com/v4/letter/i/5f8ce5/32.png) [@IOM\_G8\_GT\_888](https://forums.speedlife.net/u/IOM_G8_GT_888)\ **Post date:** [December 31, 2010, 12:40pm UTC](https://forums.speedlife.net/t/g8-long-tubes/256218/38 "2010-12-31T12:40:02Z")
I got my cat-back from [Solo-performance.com](http://Solo-performance.com) and they just recently made a mid-pipe to connect to kooks with high flow cats so I might just do that and sell my midpipe or something IDK ---
**Author:** ![88slowmarro](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/88slowmarro/32/6339_2.png) [@88slowmarro](https://forums.speedlife.net/u/88slowmarro)\ **Post date:** [December 31, 2010, 12:40pm UTC](https://forums.speedlife.net/t/g8-long-tubes/256218/39 "2010-12-31T12:40:11Z")
relax joehowk lolol what do u consider loud ? i mean r u worried about it or are u worried about others ? ---
**Author:** ![88slowmarro](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/88slowmarro/32/6339_2.png) [@88slowmarro](https://forums.speedlife.net/u/88slowmarro)\ **Post date:** [December 31, 2010, 12:40pm UTC](https://forums.speedlife.net/t/g8-long-tubes/256218/40 "2010-12-31T12:40:35Z")
> [@Bone stock c6 Z06 goes 11.177 @ 125](https://forums.speedlife.net/t/bone-stock-c6-z06-goes-11-177-125/38176/72): > > I got my cat-back from [Solo-performance.com](http://Solo-performance.com) and they just recently made a mid-pipe to connect to kooks with high flow cats so I might just do that and sell my midpipe or something IDK :thumbup [Previous page](https://forums.speedlife.net/t/g8-long-tubes/256218.md?page=1) [Next page](https://forums.speedlife.net/t/g8-long-tubes/256218.md?page=3)