I have a 2005 SS/SC with 48000 miles.
GM Stage 2 kit with k/n typhoon intake.
GMPP exhaust.

The car just recently started acting up. First gear is completely normal which is the part I dont understand...But once I shift into 2-5 the power isn't there. The boost builds up but the car just bogs at WOT. i don't know what else to do... Iv changed plugs and wires... iv clean the MAF sensor...Replaced 02 sensor. Im at a loss of what to try next... Any ideas??

 

check the cat

 

Clogged cat..

 

If its on stock exhaust sys... Take it to gm.. should replace it for free

 

Thats the only thing I havent checked... But would that explain why I am going thru so much fuel?
How do I unclog it?

 

what boost are you hitting?

 

U unclog it by getting a new one lol its covered by gm ...will be replaced free of charge if its bad... But another way to find out is high boost

 

Are u sure its covered by gm? I think I am way out of warranty... 2005 with 48000 miles.

And im hitting like 15 psi boost

 

Definately clogged cat ...well 90 percent sure... And yes its covered... Even if ur out of warranty.. unless ur milleage is over 130k there's no problem... Call ur closest dealer and tell them u believe ur catalyc converter has gone bad

 

I called them this morning... And since I have a branded title, they said its not covered!

 

Wow.......... Its not expensive anyways.... Buy one from zzp

 

Yeah, just replace it, get a Vubrant header/downpipe kit, better quality spun metal cat is included, and you gain power too!

 

My budget is very limited right now. I'm thinking about just deleting the cat all together.
Quick, easy and inexpensive
Less money than buying a new cat

 

A cat delete is gonna sound real bad, better off getting one from zzp or buy a used one.

What's branded title mean? Salvage?...

 

Opan gangnam style

 

Yeah its salvage/rebuilt.

Why would it affect the sound at all?

 

If u don't want to sound like a honda keep a cat in there

 

GM covers it for free jackass. Warranty or not up to 100k. /delete thread.

 

Read every post jackass lol

 

Yup get a header while your at it I got me their Long Tube header and their catted downpipe Its great.

 

Still having problems... I got a P0443 code now which is the EVAP purge circuit.

It still bogs while under heavy throttle...Boost goes up fine.
I hate having no power.

After I described these symptoms to my mechanic he seems to think its not the cat.
He said he will take a look on Friday.

Do u guys think anything else could be the problem?? Im at a loss for ideas now!