ZD30 EGR and swirl mod

[4runna]

Hey guys,

I recently did the egr and swirl mod and driving home from work tonight the engine light flicked on and off!!!
Would the mod have caused this?
Has anyone had any issue at all?

I do feel a response difference since I have done the mod though.
Any help would be great.

 

[tweak'e]

the mods won't cause any problems that will trigger a code.
pull up the error codes and see what it is.