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I removed my true dual system (to loud for me)and bought Speed Engineerings Y pipe and hooked it to my Borla cat back that came on my car. It is now how I like it.
Here are a few flow tests on typical glass packs louvered and non and even reverse flow. I know they are smaller diameter, but you get the idea between the ones with the holes (Bullet style) and the others......
2.25” Inlet/Outlet_ Glass Pack Tips- No Louvers- Smooth 274 CFM
2 ¼” Inlet/Outlet- Glass Pack Tips-Louvered 133 CFM Reverse flow 141 CFM
Testing done on a Stock motor had a loss of 10HP and 11ft/lbs of torque between a louvered and non louvered 2.5" generic glasspack.
Wanna know how much differance 2.25" flows over 2.5"? How about 20%!
2.25” Cherry Bomb 239 CFM
2.50” Cherry Bomb 294 CFM
Personally, I pulled an off-road TSP true dual system off that was dumped before the axle (for emissions) & replaced it with a Hi-flow cats, late model magnaflow merge/y into a GMMG. I can definitely tell that it doesn't spin up as fast as it used to... it isn't as 'snappy', but it's hard to tell if it's down on power.
I'd like to go this route, but I need the cats. It would be nice if this set was offered with a pair of hi-flows. Has anyone installed it with cats?
Anyone have a MWC Watts link with this exhaust? I am soon to get mine installed along with new shocks and lowering springs. I believe Kooks is fine with it so I would hope I would be OK seeing this is a similar setup.
I received my Speed Engineering kit yesterday. I got the long tube headers, and the over the axle, rear exit kit. Last night I installed the BMR lowering springs, rear lower control arms, removed the factory exhaust (still have to remove factory manifolds), and the air pump. I will post pics once I get the exhaust on.
Well I got the kit delivered and put on yesterday.. fits pretty damn good, I thought I might have trouble with my BMR tunnel mount torque and but no problems with that... like stated before the clamps are ****, idk if it's just me or what but they literally do not clamp.. got the whole exhaust system on before I tightened it all down and when I turn my car on it vibrates the exhaust so much the **** starts coming loose! Start to drive away and my exhaust is damn near on the ground... so I still gotta mess with it. But the sound is amazing! Went from a borla cat back to this and definitely more throaty and probably just as loud as borla or maybe slightly more quiet.. when I get everything to not fall off I'll get a good video for you guys
Post 142 tell you what bolts you need. I went with lock washers.
i tried different bolts after the exhaust didn't seem to stay tight and still nothin.. not sure what the deal is but hoping to get it back on a lift tonight