Current set up on my 04 s/c mc...k&n cai, speed daddy headers, custom 3" piping all the way back, 180 tstat, ac delco plugs and wires (stock temp) and egr delete. Anything else i should modify before dropping to a 3.4? Also, any clue on what im pushing hp wise? Quarter mile wise with this set up?

 

What are you running now? 3.5? Seeing any KR currently?

 

Im at stock pulley and i have no idea how to tell if i have kr. Would i feel it in my car or do i have to get it scanned? Who can do it? AutoZone maybe?

 

I would recommend getting a scan gauge such as an Aeroforce. Can get it from zzp, etc.

I'd definitely recommend scanning for it. With a gauge you can see how much K/R you are getting when your on the throttle. KR = Detonation, too much detonation, you lose lol. Engine goes boom. With those mods and stock pulley your probably not seeing much KR? Not sure about a 3.4 though. If you get the 3.4 I'd get a tune for sure!

 

Thanks! Ill be sure to scan! That scanner is expensive! Modding isnt cheap Jesus lol

 

You gotta pay to play.

Scangauge2 can also read KR. Sometimes those go on sale cheap, I picked one up for $119

Or you can purchase HPTuners and learn to tune yourself That program can read all the parameters of a gauge as well as make changes.

Also, you will need to go colder spark plugs for the pulley drop.

If you aren't getting your car custom tuned... and buying an off the shelf one... I would kind of recommend just going to a 3.6

 

Thanks for the info! I was thinking of gettin a custom tune but he wants me to get a wide band? Im going to buy the plugs tomorrow which kind do u recommend? Also i looked on zzp and Idk if i should get the modular pulley system or the supercharger pulley puller?

 

Wideband tuning is the way to go, it gets your fuel trims perfect as opposed to having to guess.

 

So say i find a wideband, would i replace it for my o2 sensor or where would that go?

 

Get a modular pulley system. But you're gonna need a puller to get your current s/c pulley off.