Which exhaust gives the best power increases?

[Fundguy1]

Looking at all the different exhausts out there, which ones have given the best power increases? Is full exhaust the way to go? Axle back like turner eliminate the choke points? Going to have catless downpipes, want to minimize drone and not break the bank. Priorities in order are power increase, price, drone elimination, sound, looks, weight savings. Thx.

[allmotor_2000]

Remove the cats and stick to stock.... want looks add the M Performance tips

[TheHouseWon]

Downpipes (for mid range power) and axle back (for tone, volume, pitch). Mid pipe and oem resonators are fine and don't need to be changed.

[KMORGSM5]

Catless dp's and stock CP exhaust sounds great. Catback won't do much for power increase.

[josec70]

Catless DP and stock exhaust is a good starting point IMO; you can always move on to something else if it doesn't provide what you're looking for. Catless DP's will free up some HP but little gains in terms of HP regardless of the exhaust.

[Fundguy1]

From what i was hearing the stock exhaust x pipe is restrictive. If you make or install a larger one it frees up the flow. I'm already planning catless DO and at least axle back but was wondering if the full exhaust kits had better flow than the one, especially in the xpipe area.

[straightpipeguru]

for max gain, would be a catless downpipe, but some people dont want to go the catless route. if keeping the downpipes and doing the downpipes back, the RPi GTM gives a 15 to 20 HP gain