I currently have the basic bolt ons on my gsr..and have a vafc..my smog check is due in about 4 months..if i was to install itr cams and get it dynotuned..then smog time comes around put back stock header and cat..would the fuel tuning and all that from the dynotune be messed up once i put back the aftermarket parts after being done with smog..since im assuming there wold be more fuel added and such when its tuned..putting back the stock parts id be running too rich..my main concern is would i need to get it dynotuned again after putting the parts back on..or use that same dynotune setting and be ok..?

 

perhaps so... just try to remeber the vafc settings... and when testing drop the fuel in the negative settings or cloese to 0

 

well if its properly tuned, i would think that your results would be fine and you wouldn't have to return anything to stock.

 

Exactly....with a good tune, you shouldnt have to worry about it with that setup.

 

oh im in california though and i highly doubt i can leave the dc header nor carsound cat..

 

so if i was to set everything back to zero and stock vtec xover when i go smog..then reenter what the settings were when it was tuned after smogging..id be fine..? the fuel and stuff doesnt alter by switching parts out.? and using the same setting last time would be ok..or have to redynotune

 

DC, i believe has a CARB number stamped on it, my greddy has one. Leave the cat on, it shouldn't affect the SMOG since its a working CAT

 

oh but ive been told by numerous people that even with the carb sticker and such..the cat and header has to be stock..the intake and catback is fine though..

 

I think there telling you that you will fail the visual.
But not the smog inspection itself

 

You could always get a JDM ITR header complete with heatshields... :rick: