correct which then will result in throwing a code.....yea i think map clamp will help from thowing the overboost code.....pettyracing said:18 pounds with no mapclamp and no fuel mods is max. I'm running 21.5 pounds with mapclamp and bottleneck fix ,255 walbro and Aaron's return line set-up.Everyone has there own opinion on this.I think with the stock turbo on the stock motor the turbo loses performance around 19-20 pounds.If you get a 3" O2 housing downpipe and exhaust you'll be able too push more boost without turbo surge.If you push more then 18 with no mapclamp you'll get overboost and sparkcut.You'll think you blew your motor the first time it happens too you.lol.Before turning any boost up I would get a wideband too make sure your AFR are safe.
Sooth.plastick said:Keep it at 17 just to be safe. Personally, I wouldn't touch the boost until I had a Wideband in the car and a more accurate way to monitor boost (the stock boost gauge is...eh.)
17 spike holding 15 will show you a max of about 12.4 AFR near redline.