So its on a 90 NA. The motors runs, and will drive, but when I step on the gas, it takes about 15 secs to climb in RPMs, to start accelerating half way decent. I believe its the TPS, but we have both tried adjusting it, and checking the TPS itself. Any ideas on what might be causing this? I also pulled codes 51, and 41. I know 51 is the TPS, but cant find what the code 41 means.