I plan to install a new Berk tp and the HKS exhaust. I have been reading through a few threads and from what I understand, these pieces cause a leaning of the air to fuel ratio. Does anyone know if there is any danger associated with having these pieces installed and not tuning the car's AFR?

I will dyno it one of these days, but won't know the AFR for a while. Will I be ok until then? This is on a MY01, which are known to run a bit rich anyway. So yea, any feedback?

 

Where the hell,did you get that.???

 

I am not sure. I remebmer reading something stating that bolt ons sometimes cause your AFR to jump to 14 at wide open throttle.

Its also possible that that person didnt know what they were talking about.

 

it may change a little, but nothing major and your car will re-learn its fuel maps as you drive.

 

If you are NA, you are already running a bit rich as all S2000s do. So what if a mod makes you run a bit leaner. Probably a good thing. Did you know that people put on VAFCs and the older S2000s went with newer ECUs just to lean them out? Your mods aren't even going to be that dramatic.

 

Cool, this answers my question, thanks guys!