c3 rolling

iTrader: (19)

I was told that If I switch exhausts and get high flow cats that I need to retune....is this really neccesary? Running stock cats on a 3 inch single currently....I want to switch back to my old nismo with high flow cats....

Nexx

iTrader: (41)

i did the same kind of switch with my old vortech and it ran great without a retune. just keep your eye on the wideband.

ideally yes, i wouldnt want to get a retune.

btw, the nismo exhaust is perfect for low to mid psi supercharged cars. my car ran better with the nismo than aam single 3" inch.

wannabuy350z

iTrader: (27)

I got crawford HFC for sale

ESP350Z

iTrader: (1)

fixed the detonation issue?

weslutes

iTrader: (7)

Ideally you should re-tune. You will probably run a bit more on the lean side.
What you don't want to dish another $600 j/k

superchargedg

iTrader: (4)

I would cause when i get rid of my little borla and step up to either the greddy tic or the FI 3" exhaust my tuner said he would like to tweak a few things.

haeshik

iTrader: (36)

i just got hks hi power dual exhaust w/popcharger and thats about it for my performance mods. so i need a retune?

wannabuy350z

iTrader: (27)

just reset ur ecu

c3 rolling

iTrader: (19)

nope lol

Cannysage

iTrader: (29)

iv'e switched out my dp and exhaust w/o retune and it works fine.

Skrilla

iTrader: (15)

I say retune, I did and are still NA and noticed even at the seat of my pants id i notice. Went from single with cats to true dual with resonated TP.

tylerxfire

iTrader: (15)

still got the high flows for sale wannabuy350?