These are the kits that I found for fuel injected 4 cylinder engines(some of these kits can be used on v6 EFI engines as well ex. ZEX)

ZEX
ZEX 4 and 6 cyl WET kit part #82021 $799.93USD


ZEX 4 and 6 cyl DRY kit part #82011 $719.93USD


ZEX 4 cyl only Direct port nitrous system part #82030 $887.44USD


Edelbrock
GM EFI Wet Systems #70214 (silver bottle) $499.88USD (ebay price)
Application:
2005-2007 Cobalt LS/LT, ION 1 and ION 2 (40 to 60 aditional HP)


(according to the edelbrock website there is no dry system available for a returnless fuel system)

NOS

Single Fogger Dry Kits Part #: 05122NOS (universal kit) $509.88USD(ebay price)



Universal Drive-By-Wire Wet Nitrous System 4-6 Cyl. Part #: 05134NOS $684.99USD (ebay price)



Sportsman Fogger Nitrous System (Direct Port) Part #: 05030-FINOS $$$(non listed)


Nitrous Express

Fly By Wire Single Nozzle EFI Nitrous System ALL GM part#20919 $640.64USD (10lbs bottle)


DynoTune

4&6 cylinder EFI Nitrous System (wet kit) $389.00USD


4 & 6 CYL Dry Nitrous System 269.00USD


4 Cyl Direct Port Nitrous Kit $589.00USD


Two Stage Wet & Dry Nitrous System for EFI Engines $599.00USD




I have notice people mention the cold fusion kit but the website didn't mention anything about newer GM 4cyl. engines so I didn't use them. Hopefully this helps!!!

Dynotune seems to be the best value. if anyone has used one of their kits, please list ur experiences below!!!

I smell a sticky don't you????

 

Don't forget Dynotune

 

thx i'll add it

 

why do you have to run a wet shot on a returnless fuel system?

why cant we run a dry shot?

 

I am running a dynotune DRY 50 shot on my GM stage 3. Works great.

Not sure who said you couldn't?? The gm stage 3 actually calls for a dry shot since the PCM controls fuel through the injectors.

 

What are the major differences in these kits? I would like one but I'm not sure what im looking at.

 

Fancy bottle colors

 

Sticky!

 

Whats the Difference between Wet Dry Fly by Wire

 

wet and dry are universal for cars with a throtle cable, fly by wire is what the cobalt/pursuit use with the TPS (throttle position sensor)