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Where to put the H-Pipe

2163 Views 2 Replies 2 Participants Last post by  Hendge
I'm takin my truck to a local muffler shop at lunch time to have an H-Pipe added in to my dual exhaust. When I had it put on before we just cut the muffler out at the dual ins (2007 has the dual input muffler) about halfway back from the front and welded 2.5" pipes onto the 2" that are there. Then we ran those about 4 ft or so to 2 Flowmaster 40 Delta Flows. Then more 2.5" out the back behind each wheel.

Anyway, where should I have the H-Pipe placed in the line of pipe for the best advantage? Closer to the front in the 2" pipe or after the transition into the 2.5" pipe?

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well I had the h-pipe put in halfway between the manifolds and mufflers. all I can say is WOW, I had no idea how much torque I had lost. I don't have a dyno but I think I have gone way passed the stock torque levels, especially in the 1500 to 2500 rpm range. I never had nearly this much pull from the factory.

Next up is the S&B and the 2* advance.
real nice to hear. I have a leftover x-pipe i was hoping to use when i put the nismo dual on. Glad you got your torque back!
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