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Gibson Exhaust Performance Headers Part #GP500S-C Customer Reviews
2 Customer Reviews
Reviewed by Clint B (Mcallen, TX) Reviewed for a 2005 GMC Sierra — Aug 29, 2014 1:53 PM
I knew what I was getting as this is the third set of shorties I've put on a GM vehicle. This is the first set of Gibson's though. They make a nice solid product. I could immediately feel the increase in hp and torque. Install went well. My one knock is the instructions say to reuse the factory flange gaskets. That sounded like a bad idea, so I called Gison to verify and they said to replace them if over 100k miles. Just buy new ones anyways at any auto parts store for $7 a piece.
Reviewed by Jeffrey D (Phoenix, AZ) Reviewed for a 2006 GMC Sierra — Jul 11, 2007 11:26 PM
I liked the ease of ordering,and the quick shipment. The instalation only took about 2 hours and was very easy.The headers look very good.That is the only benefit I have noticed They look good as far as any performance increase I cant feel any after 2600 miles of hiway a lot of it on steep grades I dont think there is any increase in pulling power and as far as gas mileage I seem to have lost about 4 mpg anything over 55.
Ships Between 9/04 - 9/06
- What Do You Drive?
- Part #:GP500S-C
- 1 5/8" tubing size
- Not equipped with EGR fittings
- Download installation instructions (PDF)