[mustanginky]

Originally Posted by MDK210

but 8lbs of boost doesn't equate to 8psi though, right? I know this is newbie but if a guy running 10psi is making 500rwhp and I'm running "12-13psi" but only making 452 that doesn't make sense. I know it's all about how much air is being pressurized but it doesn't make sense in my pea sized brain.

lbs=psi. it's just another way of saying it. this is almost too funny. if i were an asshole i would have given some weird conversion factor and you'd think you were running 212.64 lbs of boost or something.

timing, etc...can make a big difference. have you done a compression check to see what kind of condition your engine is in? perhaps it could be that. i wouldn't expect a whole lot more from 12 lbs than that on a 4v to be honest.

fwiw, you can expect since your dyno was a mustang dyno, it could be a little lower reading than a dynojet based on the way they put load on the car. if it runs fine, doesn't blow oil, and keeps up with cars with similar mods and more hp, then it's fine.

if you really wanna satisfy yourself, take it to a dynojet and run it on there, see what #'s she makes.