Hey there! I'm new to the forum and I was just looking for a recommendation if anyone knows a tuning software or a software to change the ignition tables on a 2.0L 2008 Mazda 3 GS. I have found options for the Mazda3Speed but none for the 2.0L GS model. Just looking to play around with it maybe...

alright guys. first off just joined the forum cause i have done everything to my knowledge to try and fix this and im going insane. i have a 07 speed 3 with 163k miles. the code that is KILLING ME is the misfire on cyl 1. here is a list of what i personally have to to try and fix it...

Would a o2 sensor cause limp mode? Only code is upstream o2 sensor and ecm but ecm is still good, have no throttle response, 2k rpm, need feedback asap?