killerEg2

Hello guys i own a stock b16a del sol.Today i put a test pipe and i wanted to know if my afr will be affected. Lean or rich? Thank you

NotARaCist

iTrader: (1)

Your actual motor AFR's should be unaffected. Your "sniffer test" AFR's will be seriously affected.

Ya know what else will be unaffected? Your power.

B_Swapped93

Yup no way you'll pass any emissionos test with it on.



Ya like 8whp y0 bcuz race car op keep on being a ricer....

Fishbone Fan

Did you throw a CEL?
Does your state require emissions testing?

Out of curiosity, did you notice any performance or smoother gear shift changes?

doctorake

Smoother gear shifts? From an exhaust components?

killerEg2

I actually live in Europe.We have emissions test which i failed before.Thats the reason i removed it. Without it the car seems to be better after 7k rpm. Noo shifts are not affected by a cat. =]

NotARaCist

iTrader: (1)

lol if you failed with an old cat, you're going to fail even worse with a test pipe.

Fishbone Fan

I suggest you move to China.. they obviously don't give a **** about any type of emissions.
http://latimesphoto.files.wordpress....ina-smog10.jpg

Fishbone Fan

Last year a (let's say..a non-certified) mechanic changed my timing belt, water pump, tensioner, cam seal, accessory belts, new oil + fliter, pcv valve and ripped out the cat screens all in the same day. Afterwards the car shifted much smoother and I attributed that to the lack of back pressure from gutting the cat. Is the new timing belt the reason for a smoother shift? As a side note it has deeper (IMO better) sound to the exhaust after the cat was gutted.

NotARaCist

iTrader: (1)

Nope, doesn't work that way. The rest of the tune-up may have made your car shift better, but the gutted cat didn't cause it.