Northstar Engines and System Technical Discussion Discussion, Magnaflows on a 2003 Deville in Cadillac Engine Discussion; I put Magnaflow Mufflers(don't know model) on my 2003 Deville Base about 2 months ago. The car has 268,000KM, and ...
- 06-02-14 09:20 PM #1Cadillac Owners Member
- Automobile(s): 2003 Deville LD8, 2007 STS V8 AWD
- Join Date
- Apr 2012
- Toronto, Canada
Magnaflows on a 2003 Deville
I put Magnaflow Mufflers(don't know model) on my 2003 Deville Base about 2 months ago. The car has 268,000KM, and this is my first mod from stock. I can say it does have a little bit more power but only at the very end of the RPM band.
It only has more growl when I step on it, and has absolutely no drone while cruising which I love. It also saves me about 2 Liters per/100 KM. The mileage improvement might of happened no matter what replacement mufflers I put on, simply because of the high mileage on the stock mufflers, but I'm no car expert.
- 06-03-14 08:23 AM #2
Re: Would Magnaflows help MPG?
Exhaust work on these cars are usually for sound, especially the end muffler work.