Originally Posted by
Dom_c13b
What kind of Dyno are you using? This dyno is notoriously low. It's a big Mustang that always disappoints haha. Example, my personal truck in my sig, I put down 735, then the next weekend went down on the mobile dyno and put down 825, no changes made to the truck or tune. So please take the numbers with a grain of salt, to an extent anyhow.
This year with the 400 overs I started at 1200uS/18* timing and went up from there. The 1200uS tune I believe put down 680 if I recall correctly. I really think these s5xx turbos are the problem. My theory will be tested in a couple weeks when the 488 ETR shows up.
Doesn't run too hot, 1750-1800ish is the recall on the edge after a typical pull.
Last year with the 250% overs running 2200uS it ended up around the same HP, just couldn't get anymore out of it. All I know is if the new turbo doesn't make more power then I've got myself a 488 to put next to the 69 on my truck.. haha