To upgrade or not.
 

Need info as far as boosting power. I put on 285/70/17's and I can tell the difference from the stock 265's. I keep debating whether to chip my truck or not. I don't want to power it so high that I have to worry about EGT's and blowing my transmission. What do you guys think is a good chip or plug and play upgrade would be? Also, does most or all 48re's shift like crap when locking in the tork converter. That's my main complaint with the transmission in my 05. Thanks