-=Jeff=-

I know they changed at some point..

I know the LT4 exhaust is the stock exhaust to find/get.

When did the resonator change and what were the changes?

I have a resonator PN 10143518.. Wonder if it worth keeping around..

billschroeder5842

The resonator changed in 93 and is the same for the LT1, LT5 and the LT4.

I spoke with Marc Haibeck as I wanted to change out the resonator on my 91 LT5 and he said that any 93 and up will work great. He said the resonator swap was worth an easy 8-10.

I ended up with a Magnaflow "X" pipe resonator and kept the stock mufflers. The car is slightly louder but zero drone.

There is a photo showig the difference between the factory resonator pipe diameter and the MF "X" pipe.

WVZR-1

The "EMBOSSED" # in the resonator is actually the assembly # for the "system" cat to rear bumper. The 10143518 is a '92 - '93 LT1 system complete!

You would need to actually compare the resonator you have to the '93+ LT5 to confirm it's similarity.

Poster #2 is likely correct for LT5 but I don't know that it's reliable information for LT1 systems. I doubt it!!

-=Jeff=-

well I am hoping to find out if this one is better flow than the 90 one.. I have corsa on the car now.. but always wondered how the stock exhaust would sound with a better flowing resonator and my C6Z Cats (I have yet to install).. I am using magnaflow cats currently

WVZR-1

I'd say it's a bunch of aggravation and FOR WHAT?

-=Jeff=-

I said I wondered.. the magnaflow cats will get swapped for the C6 ones at some point

Kevova

For those who have done it opinions on is it better to lose resonator or mufflers on a lt1/4. The sound in the videos are about the same at idle. I would rather not cut up exhaust, but I don't want to pay the corvette tax on a 3 inch system.

billschroeder5842

Whats the goal? Sound? Power? Factory appearance?

Kevova

Performance. engine change over the winter.

billschroeder5842

Lose the resonator and get the least restrictive mufflers you can find (insert muffler debate here).

RicardoG

Bill: did you use the Magnaflow 12469 wich is a 3" in/out or did you install the 2 1/2" version? (MF 12468)