Nightwatch08

I run between 15-16, just wondering what boost level you guys are running with 2.8 or smaller pulley....

ecotecon18s

your exhaust and ported s/c make you run a little less...my buddy has it on just stage 2 and sees about 18...

Nightwatch08

what's crazy is when my srt-4 went from 14-18 w/ stage 2 it was a very noticeable increase, on my Cobalt I could feel the difference but not = to the SRT even though it's the same incease in boost. I am guessing the turbo is more efficient.

ecotecon18s

turbo boost>s/c boost ....its not all about the psi...it has a lot to do with CFM and air temp also.

Nightwatch08

yeh, I have noticed this runs much hotter. Thanks for the info..

ecotecon18s

no prob man. you learn new **** everyday.

INFE

iTrader: (1)

I see 17.5 on my 2.8

Sizzle06

iTrader: (4)

I see 17 to 18

ecotecon18s

put a header/dp on it and watch it drop 2-3 psi

INFE

iTrader: (1)

That didnt happen to me

selfinfliction

4000 psi

ecotecon18s

hmmm...interesting...I've seen around 18 on a 2.7 at WOT top of 3rd-4th

theneelster

14 with a 2.9
so it should be around 15-16 with 2.8 (haven't ran it in a while) I have the vibrant header/dp.

D4u2s0t

what most people don't understand is that more boost doesn't necesarily equal more power. 2 cobalts can race, and one making 14 psi can beat one making 18 psi. boost #'s are not everything.

383_Stroker

iTrader: (3)

I made 16 on my 2.9... and then I put the methanol on, and it went to 17.5

Zach06CobaltSC

lol @ meth adding boost now, roffle.

Kibosh3

ya, theres really no correlation...meth wont give more boost.

and with my set-up i see 15-16 psi

ls1fbody

it made the charge air denser, and so it probably did register a small increase in boost.

i dunno about 1.5lbs though...

Jared B

Before i put my exhuast on i had 18 now its 16

Nightwatch08

So we are all around the same ball park, w/exhaust. I need some cooling mods now, because it gets super hot!

Kibosh3

ya..meth injection and a fresh tune afterwards would be considerably beneficial

Sizzle06

iTrader: (4)

Exactly!

INFE

iTrader: (1)

well i let you know what i run with a 2.7 because im thinking of droping down when i get meth.

383_Stroker

iTrader: (3)

*sigh*.. I'm going to have to make a video to prove this I suppose.. I've got it switched and I discovered it by accident.

Step 1 Added Methanol Kit w/ #5 Nozzle
Step 2 Was making wide open pulls in 3rd, saw 17.5 psi of boost, two times in a row
Step 3 Bought a downpipe, because I assumed the cat was clogged.
Step 4 Make More wide open pulls, see 17.5 still
Step 5 Turn off Methanol, see 16-16.5
Step 6 Turn Switch back on, and it's back at 17.5psi

Meh.. Video to come I suppose...

ifknrock09

believe it or not stroker speaks the truth. i had snow performance stage 2. and before meth with my 2.8 i hit 15-16. and after i got the snow kit i would hit 17-18. well my snow kit took a dump so it out of the car and now i am back to 15-16. keep in mind that it does all depend on your exhaust mods. i have a header, catless dp, and full exhaust.