if my boosted integra was tuned already with a oem radiator and i decided im gonna upgrade to a single sided aluminum radiator do i need to retune the car????

 

If your thermostat is the same, your engine will be the same temp under normal operating conditions...

Your intake temp might go up (less air through your intercooler with bigger radiator?) but I kinda doubt it will affect much.

(Edit:: On a dyno, the air going past your intercooler won't hardly change at ALL, so re-tuning on a dyno would be pointless.)

I'm getting a new radiator after tuning on the stock one and I'm not worried about it.

-Chris