I have K04's, full stage 3+. Want to keep it a sleeper, so I am about to do my exhaust. I have piggies and no main cats. Between 2 1/4" and 2 1/2", what would realistically be the power difference? If 10hp or les, I would stick with 2 1/4" to keep as quiet as can be. If more than 10hp I would consider bigger. Assuming all other variables the same, same style and length Magnaflows. What would the difference be power wise?

Thanks guys,,,[/align]
__________________[/align]

__________________
01 A6 2.7T,blk/blk,6MT,Stg 3 SSP TUNED!,H&R/Bilst,18x8.5,et30,235/40 Falk,CM St3 clutch,IPP Lg I/C's,Vast elec fan,Sport pkg,(Daily car)
91 300zx TT,FAR from stock,550+hp,Red/Blk,only 84k on odo.. Mod list too long 4 sig (Fun car)

The mufflers you choose will be more important than which of the two sizes you choose.

Bob

Sound over performance with this product. I went with the sleeper apr's, sound great in high RPMS.....Pricey but nice.

__________________
2001 audi a6 2.7T(tiptronic) Stage3
Tuning GIAC/AWE custom tune, GIAC/AWE tipchip
Support APR bipipe, APR snub mount
-Forge diverters, Fuel pressure pump
Intake Full Dar intake
Exhaust piggy downpipes, 3.5' APR exhaust
-Genuine RS4 Engine Mounts
-awe-tuning intercoolers
Coming Soon...H&R Coilovers

Decided on 2.5" and just doing as large mufflers as possible. Ordered mufflers the other day. Once I have installed I will post on this thread the results of sound, volume & performance..

__________________
01 A6 2.7T,blk/blk,6MT,Stg 3 SSP TUNED!,H&R/Bilst,18x8.5,et30,235/40 Falk,CM St3 clutch,IPP Lg I/C's,Vast elec fan,Sport pkg,(Daily car)
91 300zx TT,FAR from stock,550+hp,Red/Blk,only 84k on odo.. Mod list too long 4 sig (Fun car)