eh ok, what do YOU think is wrong?

a leak or ebc which is not set up would mean that you are probably making stock boost or maybe less (since your #s are close to stock this seems likley).

bad ignition means you were not firing on time or not at all.

leaner a/f mixture will create more heat and less fuel will be burned. both of those factors will result in lower power.

like i said get it scanned. this will tell you right away if the check engine light is signaling the problem.

got the car checked out the other day...the MAF sensor is bad and my plugs are gapped to 34 and not 28...other than that it seems fine...would that have anything to do with the low hp? most guys have atleast 390rwtq and i have 258rwtq...i dont understand y...should i just sell the car and get a new one?

just get a new maf or better yet switch to a speed-density unit like the map ecu or vpc. a faulty maf will cause mis-calculations of the a/f ratio.