Hello all, I am the owner of a rather problamatic 95 Altima and I need a little help with a problem I’ve been having. The car periodically misses at speed (quite violently)and sometimes will not idle . Last year the primary cat clogged and instead of replacing it I just had it gutted. About 3 months after this stumbling started. This is our second vehicle and really hasn’t been used since june because of this problem. Essentially I would love to find someone in the Durham region(Oshawa Area) with the capability to plug into and read OBDII for Nissans. Or if anyone knows a real good mechanic who works with these cars in the area that would also be great.I have 2 domestic cars that I work on but have little expierience with imports. If anyone has an idea of what might be causing this any input would be appreciated.