Purchased a Mace memcal today. Hopefully get it by the end of next week so I can get it installed. Keen to see what gains I get once I fit the new memcal. Should hopefully have the new O2 sensor installed by then as well, if not I will wait to get the sensor in regardless, before memcal goes in. As I don't want any errors to restrict the new tune. Also I suspect since the 02 sensor has failed I could possibly bee running rich as it is going through extra fuel. Hoping that replacing the O2 sensor I might actually seem some gains, simply because it will be running properly. Still have this error code 38 which is not a recognised error code. Hoping that if I can get the new speed sensor plug on this eve and a new SH sensor if needed that I can clear the trans code and hopefully eliminate this error 38 at the same time. While at the wreckers the other day I confirmed they have a set of Pacemakers on the VP I looked at. Hoping I can find some time next week to go and get them off. At $150 I don't want to miss out. Then all I need is a Mace CAI and I will be pretty much set as far as getting some HP improvements without going into big cost items, that my 190k engine would not appreciate I don't think. May still look at a coil upgrade as Immortality mentioned a few months back which are as good as MSD but no where near the price. I just need to go digging to find out who makes them. I figure my coil packs could be quite old and at some point will no doubt fail, so might be an idea to upgrade, depending on price.