Did you guys all use locking header bolts

 

I have a deluxe as well, but I have the MPG gauge? Perhaps becuase mine has the "interior upgrade package"?

 

Not me and no problems after a few thousand miles.

 

I have a premium with the IUP, and I don't have the 6 gauge cluster.

 

I am lucky mine came with a speedo and a horn!!!! LOL

No locking bolts here..............hoping for the best! LOL I actually asked the brenspeed tech and he never mentioned that I needed them.

patrick

 

No change in milage for me. No locking header bolts either.
2 1/2yrs with the LT's & O/R H on mine.
Only time I saw a change in milage I noticed was when I installed the aftermarket tire/wheels.

 

I guess I will try without the locking header bolts. I am pretty excited and nervous to put these in. I hope I feel a difference

 

Can anyone tell me if there is a big difference in sound going from o/r x to lt's and o/r x? I dont mind the rasp I have now, as I dont think it is that bad at all but dont want my car to sound like a dump truck

 

The cats make most of the difference. If you already have the cats removed, it will be louder with the LT's vs. the factory mainifolds, but only about twice as loud...LOL
I personally prefer chambered mufflers with no cats & LT's , but you'll have to see how you like the current setup.

 

So you think it will be twice as loud as it is now? I might be putting my stock mufflers back on lol