Hello. I just cleaned my FPR screen a few weeks ago for the first time ever (Didn't know there was one until I found this site). Ever since, when it isn't fully warmed up yet, if I get into it, it misses. After it is at operating temp, it's ok. I don't get a CEL. Is this normal, more fuel flow, not up to temp, incomplete combustion? The screen was packed and I always change the fuel filter every 15K miles since new. Also, I have stage 1 injectors and a chip. Thanks for any info.