so new to these cars.. ask about a cummins turbo diesel ill help you out on that.. never tride to mod one of these tho.. so i want to keep my warenty but want some extra power..i want to go with the gm stage 2 kit.. with 42# injectors.. and 3.0 pully.. with the shorter belt.. what els will i need with this set up? exhaust.. intake.. ext... also is this safe? are there any guages i should have? like in my diesel a must is fuel pressure, egt (pyro). are there any for these ss\sc's? thanks in advanced... o and also.. fuel. what should i run with the stage 2 kit? right now i run a 91.. or 92 if i can find it. all they have here in town is 91 tho.. is that ok with the stage 2? thanks

 

The GM stage 2 kit is very safe. You need nothing else to run the kit except the tune that gm provides for you during the install. The only gauge you should really purchase is an interceptor gauge to monitor your iat2's. You should always run 93 in your car if you can find it, if you can't use the best gas available ie 92 or 91. You might have slight knock with 91 octane but I doubt it. Try and run 93 if you can.

 

Ima try n help but if i miss anything im sure one of the other guys will help out.
For the Stg 2... other than your belt, injectors, pulley and a tune you dont really "need" anything else. Of course a header/dp will be beneficial along with a catback. As far as gauges, a Wideband would be a good investment to watch your air/fuel ratio and/or an aeroforce. And on the octane, i ALWAYS run 93 but i'd like to think that 91/92 would work.

 

You don't need to watch your air to fuel ratio on a stage 2 car, they ALL run extremely rich and that is that lol.

 

Dual Pass + option B would be a good idea. No need for A/F gauge unless you wanna see 10's at wot and think about how much more hp you could have.

 

what is a good air to fuel ratio? see on my diesel i had alot more fuel than air but that was ok... haha sorry if i ask stupid questions... see heres my whole plan let me know if it sounds good..


GM stage 2. 42# injectors.. 3.0 pully shorter belt..
NGK 1 step golder plugs gaped .45
Ported M62 Gen V Supercharger Housing
hahn 3inch catback


how does that sound for a start? but mainly want to be safe.. and what is a good air fuel? and were could i pick up the guages you guys sugest? thanks..

 

That is a good setup to start off with. You can't change your air to fuel ratio without hptuners which is a 5-600 dollar program so don't worry about that. That will be very safe and you won't have to worry about anything. A good air to fuel ratio is 11.3-11.7 roughly.

I recommend you buy an interceptor from ottperformance.com One sec and I will get you a link.

This gauge is a MUST buy for our cars. Read everything it can do!

http://www.ottperformance.com/Cobalt...duct_info.html

 

91 is fine to run (its the highest we get here in california) Stage 2 requires a minimum octane of 91.

 

thank you.. what is the knock retard guage part? sorry agian new ha

 

The interceptor can read knock retard, knock is what you get when you run to low of an octane or if you run to much timing. Knock is NOT good.

 

i know knock is not good.. ha i know this isnt like my diesel.. but i was just wondering.. so one of those guages.. need.. any thing els.. i want to get the safty\needed mods befor i go get the stage 2...

 

Nah you won't really need anything else with just stage 2. When you want to void your warranty let me know . You should also grab an injen cold air intake to gain a few extra ponies and so you can really hear the s/c whine.

Also a header/downpipe would be a good idea to grab too.

It just really depends on what you want to do with the car.

I would also grab a triple pillar a pod so you can use your boost gauge and the interceptor and then you can grab another gauge of choice, fuel pressure, oil pressure, wideband etc.

If you are only going with 2 gauges you can purchase a dual pod a pillar, in fact I have one for sale if your interested .

Also I will highly suggest skipping the stage 2 and grabbing ottp stage 1 kit as it is MUCH better all around and creates more power, however it will void your warranty if your dealership is gay.

 

i dont want to void it.. i will prlly go all out after the factory warenty is up.. but for now just play it safe.. my extended warenty will not be voided no matter what i do... (friends in high places).. is there any cheaper way then the interceptor guage? to moniter what i need?

 

No sir, the interceptor is the cheapest and most reliable way to monitor knock, boost, iat2's, and everything else. You will learn to LOVE that gauge. It can also read codes and clear them .

That gauge alone can save your motor from blowing

 

when you say it can read boost... cant my stock guage also read boost haha? orderd the 3.0 pully and 42# injectors today..

 

I didn't realize the interceptor could clear codes. That is good to know. You are a good source of info Zach.

I didn't realize there was a warning light on an interceptor.. (just ordered one). What is that for?

 

The "warning light" is used more so for a shift light to the best of my knowledge.

 

hey zach i got a ? for you. You know everyone says the gm stage 2 tune is super safe for these cars, It does run very rich at WOT. But what about part throttle. Before i changed my tune, i could go almost half way done on the throttle and i could get boost to go up to about 7 or 8 psi and i would still run a 14.7. Only way i could get it to go in pe mode to add fuel would be almost all the way down and WOT. Im not saying the gm stage 2 is not safe im just saying I changed it right away to hit 12.0 as soon as boost came on. Thats how it should be.

 

Thanks for the warning light info. I will have to check it out.