Posted by on 1st February 2020

How good is a Magnaflow with K&N cold air intake on Jeep HEMI 5.7?

Well we’re going to tell you here. The Magnaflow Exhaust on Jeep Grand Cherokee V8 5.7L HEMI comes complete as Part #16631 which includes a muffler #12586 and the resonator. A proper real world road test has been carried out at MiE; on the drive, on slow roads, pulling away window open and closed, 50mph cruise, 70mph cruise mostly videoed inside the Jeep to give you an idea of the noise levels.

K&N Cold Air Intake + Magnaflow
K&N Cold Air Intake + Magnaflow HEMI start, launch, 30, 50, 70mph 5.7 WK Jeep Grand Cherokee 2005-10

Stock WK Jeep exhaust

On the stock WK or WH 5.7 HEMI models, the muffler is basically a 37 inch suitcase with a 14 inch resonator – which is virtually silent. But silence isn’t necessarily the aim of fun driving. Thanks to Magnaflow some nice V8 sounds come to life…

Laurence of MiE says, “on my 2005 Jeep WK the set up is; K&N Cold Air Intake CAI followed by a 2.5 inch Stainless Steel Cat Back single pipe exhaust system. Using Magnaflow parts, along with a Magnaflow 4 inch tip. It also has 255/75 R17 BF Goodrich Mud Terrian KM with 3 inch custom lift and 1.5inch wheel spacers. Moog upper and lower control arms. JBA underbody front and rear protection plates, Mopar fuel tank, transfer case and gearbox protection plate armour. It’s an LPG bi-fuel conversion with Quadradrive II and hydro blue paint.”

The 1st video on the Magnaflow subject is on YouTube. The 2nd episode when we hacked the resonator off you can see and hear on the video “Resonator delete” in the paragraph above this one.

All so you can choose the best exhaust system to suit your own vehicle. So in effect you are seeing the difference on a Jeep Grand Cherokee V8 5.7L HEMI 2005 2006 2007 2008 2009 2010, between a Magnaflow #16631 on this video and the Magnaflow #16632 system.

Until next time drive on and wheel off road safely!

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