I have a 2009 Honda Civic 1.8 five speed coupe that I’m building into a race car. I have a 2006 as well that’s automatic. Does the automatic have a higher rev limiter and if so will that computer fit in my 09 and will I trip the security theft by switching the computers out?

 

That won't work for more than just immobilizer reasons... if it's a track car just get a standalone ECU and do whatever you want.

 

It’s a stock class I was just trying to get it so the rev limiter wasn’t at 6800 and be more at like 7500

 

if you like dropping valves.... but yeah, that won't be plug and play at all.