Ok so I've got a p28 in an eg running an ls/vtec. The car came with a mostly stock p72 base chip made with crome. However, like the rest of this minority built shit pile, it was hack and was running with every thing possible disabled and debug mode enabled. Obviously the car got crap fuel mileage and just generally didn't run smooth.
So I tried to fix it. The no brainer move seemed to be to take a stock p72 base from crome, disable knock sensor for the p28 to be happy, do the remove check sum routine, and profit. However this resulted in all kinds of issues. The car has hesitation, bog, amd surge spots all over the place. I breaks up horrifically at low rpm when cold, but runs decent when warned up. It had no check engine light until I drove it to the mall yesterday, it ran alrighton the way there, but took a long time crank and start, threw a check engine light and refused to idle. I tried to drive it but it had no power and was breaking up like crazy. I had nothing to use to jump the service connector so I don't know what the light was for, but I pulled the j1 jumper and drove home on the stock p28 map without a problem. When I got home I reconnected j1 and the the check engine light was gone so it'll remain a mystery what it was for.
Any ideas on why this map refuses to work? Am I missing something? Does something other than the knock sensor need to be disabled on a p28?