ok so this summer ima be putting on a zzp 2.8 pulley with 60lb injectors, will have header dp and exhaust as well as cooling mods before i do it though, was planning on running like 18lbs of boost, is that too much?

 

With the SS/SC you want to try and keep boost as low as possible in order to maintain efficiency of the blower, and to keep temps down. Its hard to say how much boost one will make with a particular setup on the LSJ, because so many factors affect it (climate, elevation, supporting mods, etc.). I suggest you dont shoot for boost numbers, and perform a little more research on setups for the SS/SC.

 

might be lucky to even hit 18psi on 2.8 might get 16.5-17psi... bu u never knw

 

yea i hear u, it was just an idea to try and get a lil more power out of it but i dont want it to blow up so i wanted to ask advice from people who have done the 2.8, THANKS!

 

I understand.

Just remember more boost does not always equal more power.

Now, if you have the proper supporting mods for the 2.8 you can expect a little more hp and a nice bump in torque.

 

such as? sorry this is my first cobalt, still learning how to do things correctly haha

 

Intake
Full exhaust (very important)
Cooling mods

 

gotcha, im going with the full zzp exhaust(header, dp, exhaust) and then zzp s3 heat changer. what other cooling mods do u suggest?

 

dual pass endplate

 

yea someone else told me that, what exactly does that do?

 

Dual Pass or Single Pass Setup.

i reroutes the way the fluids flow thru the IM to keep temps cooler.

 

gotcha, well i will be doing that as well then, thanks for the info guys

 

im running zzp stg 3 with a 2.7 an 60's im seein 18-19 i also have full exhaust, a CAI, a Dual pass, an a S3 heat exchanger

 

Like i mentioned before there are too many factors that come into play to try and compare boost levels per given setup. I could have the exact same setup as you, and make less or more boost just due to the simple fact of our locations and elevations.

 

boost is restriction...

 

for my old sc a 2.8 = 17.5psi

 

i'm running a 2.6 pulley at 20psi, header, cat-less dp, 3in. cat-back, 3in. CAI, dual pass, croba H/E, option-b tank, 60lbs, water-meth injection, and BYT tuned

 

i know what you were sayin i was just lettin him now it is possible just depends on alot of things

 

You're right it is possible.

 

would like to know when its all said and done how much whp i should be looking at? i wanna get it to like 260-270 or is this out of the question?

 

I'm on a 2.8, making 250 whp with the mods in my sig. I have minimal cooling mods and showing about 17 psi boost. I'm pretty sure my car is pulling timing due to heat, and my cat-back needs some opening up as well. To make 270, you may want to look into meth injection or E85. Personally, I'm switching over to E85 and 80 lb injectors to get in that power range..

 

What the hell is a E85???

 

Ethanol my friend... grain alcohol. Allows you to run lots of timing without getting knock. Google it, there's lot of info on it.

 

naa im not doing e85, mayb meth down the line though once i do some research on it

 

Damn son shooting for 18 psi is tough you might need that noodle header and 1.5" exhaust, maybe some extra head flow restriction.

With a blower, who ever is making the least amount of boost with the same pulley is making the most power (barring any boost leaks).