Rear resonator delete adds power?

[Pale Rider]

Just curious about your thoughts.
Does cutting off the rear resonators from a STOCK exhaust add power? Any dyno runs to confirm?
I'm concerned with the 5.7, but info on the V6 or 6.1 would be cool too.

[Guest]

I got a touch over 20rwhp gain when I did the Blastin' Bob's reso delete.

[Pale Rider]

Bandit, not doubting you, but that is a LOT - especially considering some full systems seem to claim only about 11 or so.
btw, I enjoyed your sound clips.

[Guest]

Plus don't forget the reduced weight. When I cut my resos off I would bet they weighed about 20 pounds each whereas the JBA pipes I replaced them with maybe weigh 5 pounds each.

That may not relate to direct hp gain, but it will relate to slightly better times by reducing the weight.

Plus hell... they sound INFINITELY better!!

[Guest]

Bandit, not doubting you, but that is a LOT - especially considering some full systems seem to claim only about 11 or so.
btw, I enjoyed your sound clips.

Thanks.

I too would have doubted it, but after a dyno run with only a CAI added and the Blastin' Bob's I pulled just about 43rwhp more than stock. The CAI attributed about 20hp and the only other addition at the time was the pipes.

[Pale Rider]

I cut mine off last weekend, and haven't gotten the silly grin off my face yet!

Seems there's more power, but you know how that goes, sound can feel like power.

[Todd RT]

I pulled 304hp @ the RW with a MUFFLER delete and a CAI on my 5.7.

Sorry though, can't comment on the resonators.

[Darthvader]

Hell deleting the weight alone adds HP

[mcshocks]

I got a touch over 20rwhp gain when I did the Blastin' Bob's reso delete.

Bandit, which DB system do you have from Blastin Bob? Heard your video and it's teh sex !

[Guest]

I'm not sure how it relates in R/T systems really. Mine was one of the 1st for the 6.1 and back then Bob had not assigned a db level to it. There was only one option... at this point me might be offering other options like he always did on the 5.7.

[toledocapitals]

A VERY reliable source at DCX tells me that the rear resonator on the stock 3.5L has the highest amount restriction over the muffler. Removing the resonator would result in a pretty decent horse power increase. However, due to the rear cavity in the Magnum, you could have an issue with exhaust drone at various conditions.