Okay guys, its me again, and we have a serious problem. I'm the guy that had the overboosting problem for two months due to a disconnected boost actuator. (dealers fault)

I'm also the guy that got beat by a stock RSX type S and a stock SS/SC. I've had compression tests, coolant carbon tests, GM tech diagnostics, etc etc and nothing has shown irregular. There is NO check engine light and I hit 15 psi at redline.

Well, to prove that i wasn't going crazy. I took the car to Carter Racing in Savannah, GA to put it on there Dynamics Dyno. This is the exact same dyno that a stg 2 SS/SC put down 220whp a few weeks back. The 220hp was on the stage 2 tune, they didn't have hptuners at the time.

My baseline was 131 whp. After 2 and a half hours of tuning, they got me up to 147hp.

What on earth can cause a car to dyno 90 less horsepower with the exact same mods? Please help, any suggestions are welcome.

But do remember the car passed a compression test with 150psi on all four cylinders and the coolant doesn't contain any carbon (which happens if your head gasket fails).

 

less then stock...thats really odd.

 

damn i cant beat u lol...

 

not just less than stock, about 75whp less than stock. The previous stage 2 owner got 220whp in like 100 degree weather. It was 76 degrees at the time i got mine.

Some people have suggested the head gasket may be blown and its leaking cylinder to cylinder instead of outside the block.

Also, my hp numbers are alarmingly accurate to a base model cobalt. So perhaps a failed blower??? But could i still hit 15psi with a blower failure??

 

i think i remember you. Anyway maybe its something with your gas no it would have shown in the tests damn i just dont know.

 

not running on all cylinders maybe?

 

wow thats low , try the head gasket

 

probably something to do with ur plugs and or filter.... thats the only thing thats not GM...

 

try this.

Unhook the blower anf test, see what you get. if its even with the initial tests...then you got the answer.

Check the head.

compression check

Make sure your running on all cylinders.

boost leaks after the gauge?

 

Maybe i missed something, but why did a stg 2 put down 220! My car is stock and put down 225. WTF. Something is seriously wrong, but you probably already know that huh?

 

Maybe only 2 pistons are working

 

Maybe it's a Ford in desguise. Very odd though

 

This maybe a stupid thought and it may have already been looked into but maybe you are bypassing boost constantly?

 

maybe it was the dyno? i would try another dyno and find out if you put down the same #s.

 

cat could be majorly clogged, check to see if you got ignition on all 4 cylinders ( if you don't your cat would get clogged).

 

it is running on all cly because the obdII would kick the light.
If they did a carbon test then it is not bad head gasket.
i would def check vac leak after the gauge sounds most likely.
also check to see if all injectors are working.
but my main concern would be clogged converters see them all the time where i work.
they usually won't even kick the light on which is the funny thing.

oh and to all the guys saing stock hp, stock ratings are done on the flywheel not on the wheels so our 220 or whatever stock is not 220 to the wheels probably around 180 or so

 

Do a compression test. My blower went to **** and I put down 205 with a 2.6 and full bolt ons and a custom tune. I swapped the blower and I put down over 250 Hp.

 

Sounds like "the man" is keeping you down lol

 

the 2.0L makes around 130 hp w/o the S/C, if that helps.

 

Good for nothing comment

 

Good for nothing comment right back at you.

You guys already said what I would have said...so wtf should I have said?

Oh I got it

"hey, make sure your supercharger is still in your engine bay"

 

Wow another great post! If you had nothing to contribute dont post.

 

I can contribute my dick in your mouth

 

I dont take sloppy seconds Your brother had your dick first

 

That'd be funny if I actually had a brother.