I am really looking at getting the GM stage 2 upgrade for my 2006 SS/SC, but I noticed ZZP has a stage 2 upgrade for roughly half the price. I can't see why ZZP would sell it for that less than if it wasn't including all the products or if it wasn't producing as large of a gain as the GM upgrade. Any thoughts on this? I could just be missing something very obvious but I haven't seen this topic covered yet so I was curious. Thanks.

 

crate engine depot sells GMS1 for $450 sometimes and GM wanted $900 for the same kit if that's any indication of how F'd pricing is smetimes... someone at ZZP or someone familiar with the product will chime in.

 

i had a gms2 on my cobalt and it ran side by side with zzp s3 which is nothing more than a pulley pretty much...ther goona be bout equal

 

Ok, thanks for the info, I guess its really up to who I want to give my money to then haha

 

pretty much...ull want a real tune tho after u get it and not the canned tune

 

Yeah, I will probably have someone that has Trifecta tune it for me or get Trifecta myself, the whole deal of sending in my PCM seems fishy to me.

 

go zzp and get a custom tuned its your best bet

 

ZZP for sure. Great quality parts and like you said the price is a lot better. You will probably want a custom tune with either set up anyways

 

Great, I will probably go ZZP then, thanks for the advice!

 

I have a pulley zzp 3'' and fuel injectors siemens deka 12599778 19706-123 6399. I want to know if fuel injectors are ok for my pulley stage 2 and if the tune gm can be ok for my kit??? thanks everybody , sorry for my english

 

Id want zzp.. but I don't have the tools for the supercharger pulley and Im kinda leery on the tune from zzp because i need my car every day so I can't send anything in.

 

How many tools would I need in order to change the pulley? I am willing to rent or buy a pulley puller tool from ZZP if thats the only tool I'll need, but if theres more then... screw it I won't do the project haha

 

Just a pulley puller.
See if your local auto store will rent you one.

 

can't imagine anyone with a ss/sc that still has any warranty left, because that's the only reason why you'd want to get GM's kit. All that money for a slightly smaller pulley, a slightly larger injectors, and a pig-rich tune. Get zzp's kit. cheaper and better, and with a wideband and a proper tuner, you'll be happy.

 

What should someone do about the tune? I mean, I can do all the work myself... but I just can't send in my ecu and I do not have HP Tuners or anyone around here to tune it... Like I said, this is my daily driver that I need.