| Exhaust Question - 4" vs 5"
Looking for opinions on MBRP 4" Stainless vs 5" Aluminized.
Currently running Triple Dog with Oulook with an AFE CAI and stock exhust on a '05 LLY. Wanting both higher mpg and lower egts. I pull an unltralight 5'er weighing in at less than 9k lbs.
I have heard good things about MBRP, but see that they only offer downpipe back system stating that the turbo pipe is short and a booger to replace.
I am not sure what kind of performance increase to expect from only going up to a 4" exhaust since the stock exhaust is 3.5".
Am I missing something in the math or physics of airflow that make 1/2" increase susbstantial?
Lay some knowledge on me. |