Hows it going guys. Im new to this platform. That being said, i have recently bought an 06 ss/sc. The only mods done to this car (that im aware of) are a zzp 3in intake, and zzp longtubes with 3in catted exhaust all the way down. My question is, should this car have been tuned for 3 inch exhaust all the way down? Seems pretty open for a basically stock vehicle and im starting to think it might be sucking some power out, especially when i compare it to my brothers 06 ss/sc.

Also planning on installing a stage 3 kit here in a month or so with 60lb injectors, 2.8 pulley, heat exchanger, tuned pcm. Going to be getting a dual pass as well.
If anyone has any links to a good wideband thatd be appreciated. Id like to monitor the iat with going to stage 3

 

Im not very familiar with LSJ's but i know that even when i had just an intake and catless downpipe on my LNF it kinda ran like **** lol, Get tuned the car will run 10x better and you will LOVE the performance.

 

With those mods you should definitely get a tune. Go with HP Tuners

 

I'd check to make sure your heat exchanger pump is functional and the bypass valve isn't stuck.

For a wideband, get an AEM X-series UEGO, then when you log with hptuners pro you can log the WOT AFRs.

 

How do i go about checking that stuff?