[HAWAIIZR-1]

Originally Posted by Pete

To keep cost down use the stock exhaust cut resonator off install X-pipe,cut mufflers,install Dynomax mufflers, done.

My first mod was i cut resonator off stock exhaust,installed 3" H-pipe with Flowmaster mufflers 3" inlet/dual 2 1/2" outlets, Z was running low 12's at 116 MPH,after that was headers and ported plenum/IH best was 11.59 @ 120 on GSC's had to slip clutch i used to go thru clutches like they were going out of style this was almost 10 years ago and it was unheard of.

I still have that old exhaust.

Pete

Pete,

If the stock pipes are good and no replacement needed, this is the best budget conscience upgrade I have ever heard of. Do you think the LT5 needs at least 2.75" and up pipes? It would seem GM/Lotus/Mercury Marine would have done some testing during development with the exhaust systems? I'm sure some guru out here already knows the answer. I wonder why even companies like Corsa when developing the 2.50" went smaller instead of at least staying with 2.75"? Did they think it was too big? I know they had sound, db level, resonance, comfort, emissons and many other things to consider during development.