# Orr89rocz's 1989 Camaro Iroc-z 5.7L **URL:** \ **Category:** Builds\ **Created:** [March 12, 2007, 9:09pm UTC](https://forums.speedlife.net/t/orr89roczs-1989-camaro-iroc-z-5-7l/188547 "2007-03-12T21:09:21Z")\ **Posts on this page:** 1\ **Showing post:** 580
**Author:** ![Quik](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/quik/32/5979_2.png) [@Quik](https://forums.speedlife.net/u/Quik)\ **Post date:** [August 24, 2009, 12:13pm UTC](https://forums.speedlife.net/t/orr89roczs-1989-camaro-iroc-z-5-7l/188547/580 "2009-08-24T12:13:34Z")
> [@Wacky Winter Nationals-12-30-07](https://forums.speedlife.net/t/wacky-winter-nationals-12-30-07/39952/49): > > MAF should be easier to tune than SD. Atleast in the thirdgen world, MAF cars are easier to tune. Its just that the MAF runs out of reading room and you have to rely on PE mode to get the extra fuel. If they had an LS1 type maf, things be alot better > > I’ll see how it goes tonight. Motor is a 401 with a 233/233 .564/.564 cam on a 112. Bit smaller than last years cam but motor is larger so it should make it act smaller. It sounds pretty badass tho so idk. > > I just need to get my startup down. I need to adjust my low rpm/high map ve’s to see if that helps LS1s are based off VE, the LS2+ pcms are a more MAF based pcm. with that being said just keep at it and keep it safe till you figure things out. also so you know you dont hurt the motor keep yoru WGs open so next to no boost is built till you work out hte bugs --- _[View the full topic](https://forums.speedlife.net/t/orr89roczs-1989-camaro-iroc-z-5-7l/188547)._