jerodr, Thanks that sounds like what i am looking for, any improvemnt in power or MPG, what MPG do you get with this complete setup including Gryphon?

jfuller...Honestly I haven't had the gryphon long so it's hard to say about gas mileage. The only time I have driven outside the city with it to get a good gas mileage reading I was pulling my boat. However I did get noticeably better gas mileage pulling my boat around 15.5 on a 300 mile trip. Normally I would only get about 13.5. I'm not a pedal to the metal type of person, I'm more into 40 -70 power and I can definately say that with magnaflow exhaust + gryphon + k&n dropin= great highway and around town power over stock. You won't be disappointed that's for sure. Maybe tomorrow I can take some pics of the exhaust setup and put them in my album if you're interested.

Jerod

jerodr, sounds great would like to see them, sounds like you drive like me, Jim

jfuller...here you go...sorry I was a day late.

Jerod

Looks great Jerod !!! Thanks Jim

I know when I first cut my rear cats out I mentioned that I thought my truck was actually quieter? It's not, lol. Wife B****ED all the way to Tennessee and back!

Which gives best overall performance? si/so or si/do???

:2thumbs: ....that's what I got. Even after having for a 14 months, it still makes the hair stand up on the back of my neck. It may not be the absolute loudest but it's sound is intoxicating. :drool2:

Recommendations for Magnaflow
 

Bill,

I know what I've read, but what do you recommend best for HP & MPG in the Magnaflow line SI/SO or SI/DO on a 5.4L and should I run a 14" or 18" if running the SI/DO :matt-roloff: if you recommend the SI/SO, what 14" or 18". The only upgrade I have presently is K&N cai and it will be some time before I do anymore :(. It's my daily driver and my commute is 36mi round trip, do love the HP:cheesy smile: but would also like to keep or gain the MPG :cool:. Last, but not least, :fyi: will be upgrading my Edge Evo to Gryphon with 87 Perf. custom tune after all I've read on this great forum:) thanks to everyone for the info, I've learned alot.

GSXRider

One more thing
 

:) I'm increasing my wheel size to 37x12.5x17, what performance gains or loses should I expect with the Magnaflow upgrade and what sound differences will there be?

GSXRider :hmmm: