Jul 13, 2019 #1 K Kirk Member Messages 2 Reaction score 1 i got a 3 inch cat back and I’m trying to decide if I wanna do a 3 inch or 2.5 inch down pipe. I’m just tryna see if people have any experience with lack of backpressure with the 3 inch or if it even matters
i got a 3 inch cat back and I’m trying to decide if I wanna do a 3 inch or 2.5 inch down pipe. I’m just tryna see if people have any experience with lack of backpressure with the 3 inch or if it even matters
Jul 13, 2019 #2 sunofwolf Well-Known Member Messages 2,376 Reaction score 178 Vehicle Model Civic SI Body Style Coupe you might as well go for the 3",
Jul 13, 2019 Thread starter #3 K Kirk Member Messages 2 Reaction score 1 sunofwolf said: you might as well go for the 3", Click to expand... That’s what I’m thinking
Jul 14, 2019 #4 sunofwolf Well-Known Member Messages 2,376 Reaction score 178 Vehicle Model Civic SI Body Style Coupe You want the same size though out the exhaust!
