gtxsport11

How would the Downpipe and the manifold from a 2.0 blot up to my 2.2
What types of gains should i expect from them

XM15

They will bolt up just fine. I would venture that you should see gains approaching 10 hp.

sick06cobalt

the thing is youll need a new gastket...

wdsoccer

can get that at the dealership or a autoparts store

D4u2s0t

you'll feel a gain, but not as much as aftermarket.

Delta2.2

dont do the downpipe. i did and i threw a cat code. the manifolds fine though i have that.

wdsoccer

a lot of different downpipes will throw a cel. its no big deal

D4u2s0t

yea, a downpipe is pretty comon thing to get a cel. especially with a cat that flows higher than what your computer is calibrated for. it's not a bad thing, you can just delete the code, nothing is being hurt. unless you have a bad cat, which would probably be a different code.

Delta2.2

put it this way. i was getting on average around 27-28. i got rid of the dowpipe and put the STOCK one back on and it went up to 30 MPG. i drove the same way and to the same place everyday. 2 MPG better for no code is FTW. it made my car run richer wasteing more gas

NextLevel

I remember seeing a post where someone repositioned the sensor and the engine thougt it was just the normal flow. I cannot remember who did it put if someone knows, please post the link.

RedBaseBolt

I've got the full SS exhaust system. From the manifold to the muffler and I've never thrown a code and it bolted right up.