# Zed upgraded? **URL:** \ **Category:** Shift518 Automotive\ **Created:** [April 14, 2009, 4:53am UTC](https://forums.speedlife.net/t/zed-upgraded/243514 "2009-04-14T04:53:55Z")\ **Posts on this page:** 1\ **Showing post:** 28
**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:** [April 16, 2009, 7:23am UTC](https://forums.speedlife.net/t/zed-upgraded/243514/28 "2009-04-16T07:23:30Z")
> [@Build your own sportscar](https://forums.speedlife.net/t/build-your-own-sportscar/16577/55): > > lol didnt see that, just wondering what made you decide on the ARH headers? Also, people gain on average 20 rwhp going from a 1 3/4 header to a 1 7/8 on highly modified motors such as yourself, you might even be in the upwards of 30+rwhp, good decision on your part to go with the 1 7/8 first, lots of people do it backwards and get the 1 3/4 or 1 5/8 longtubes and end up going bigger. Mine are only 1 3/4 ☹ [http://www.speedtweekerz.com/index.php?page=shop.product\_details&flypage=shop.flypage&product\_id=191&category\_id=272&manufacturer\_id=0&option=com\_virtuemart&Itemid=26](http://www.speedtweekerz.com/index.php?page=shop.product_details&flypage=shop.flypage&product_id=191&category_id=272&manufacturer_id=0&option=com_virtuemart&Itemid=26) --- _[View the full topic](https://forums.speedlife.net/t/zed-upgraded/243514)._