Need some advice for towing 13K
I have had my 05 for 2 years now and have only towed my 5K boat around with it. I just bought an 8K 5th wheel and I am going to tow the boat behind it for a total of 13K. I have a stock 05 CC 4x4 SB with 61K on it. I have been running an edge insight for the two years on the tow tune and have been very happy with it. I towed the 5th this weekend for the first time and although the truck did great I was a little concerned about the EGTs. The truck had tons of power towing the trialer but I could not use much of the power because the EGTs would get so high so fast. It was running about 1100 on flat ground doing 62mph into a head wind and 14psi. On one grade the EOT got up to 225 and the TFT got up to 180 but both were normal on the flat ground. Will adding 4" turbo back exhaust help with the EGTs? Is this pretty normal for an 8K pull on a 90 deg day? I just ant to make sure I get dialed in before I stick another 5K behind the 5th. Using 5-40 t6.