Re: Project Vert, outta control....
Ok, so I take it to the dyno a buddy of mine has. It's a very old 248a dynojet. It's inground and is a bitch to get strapped on with a lowered car, etc, but it works. So we put it on the dyno, and I'm expecting 400 or so, maybe a bit less, because it's not much boost, and first pull, I think my buddies are screwin with me. They go holy sh-- my god that's nearly 600 hp!! I said yeah right, what did it make? I go and look, 586 hp, first pull tune that I did in my living room, watching TV one Friday night and put the chip in so the car would make it down to the dyno. Fuel ratio was fine until it reached 4k, then went lean. I richened up that section of the transfer function and pulled a few degrees timing out, because this is a stock block for cryin out loud! I made the second pull, only taking it to 5500 rpms, and with 2 degrees retarded, it made 574 hp. I said man! What do I have to do to this thing to detune it? Well I pulled more timing out, added some more fuel up top and made another pull, 546 hp. I gave up. I put some of the timing back in it so the car wouldn't bake the coating off the headers and drove it home.