Technical Topics specific to the Hatchback body - NOT where you post pics/build specs of your car.
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By teal_dx
#107970
JDM-Z6 wrote:is it true that you might lose some horsepower with twin loop muffler


if you think about it, they are definitely more restrictive than a straight through muffler. You are adding two 180° bends to your exhaust. You might not feel any difference on your average NA car, but it would definitely hurt on a boosted car.
By danomatic93
#108045 Image

That's a OBX twin loop on my 93 EX D16Z6 engine with I/H/E.