I have a spare max sitting around that i am looking to turn into a autocrosser. I have been looking at hi flow cats, and such, and i see test pipes everywhere.

Are there any drawbacks to running one? Will it mess up any sensors, will any gains be seen?

 

CEL and eventually kill ur rear 02 sensor

 

Makes your car sound like **** and it wont give you any extra power.

 

i have test pipe and sound sweet with my sp2
and your rear o2 sensor will go bad every year, but you can always use o2 simulator for 25$

 

where would u get o2 simulator from, and how does it work ?

 

http://www.o2sensorsimulator.com/

it simulates signal which o2 sensor sends to ecu

 

do you have one?

 

I have a hi-flow cat. Minimum gain but a lot cheaper than a new cat. I also think that it sound good with the flowmaster I have on my car.

 

Flowmaster on a Max? Which one and is there any way that you could get me a sound clip??? have always wondered what a Flowmaster sounds like on something other than a V8.

 

Do you need insurance to run Auto Cross? You won't be able to pass emissions testing without a catalytic converter. The gains from a test pipe are negligible.

 

THE EPA HAMMER CRASHING DOWN ON YOUR @SS

 

It will smell...

 

yeah, can we say discusting, like omg.


man I want my 5 mins back..

 

that'll cost ya 5 dolla.....

 

'99 cali-spec. Been running a test pipe for 2 years and around 30-40k miles. No CEL and still running my stock O2s. factory cat-back and warpspeed y. The sound is slightly more raspier when it's cold. As far as smell, well it smells more like exhaust.. but I was also getting a rotten egg smell when I was heavy on the pedal which I no longer get. As far as gains go, it's definately there but it's probably due to the y-pipe I put in at the same time.

 

not installed yet, but i will install it very soon

 

actually spark-plug anti-foulers are cheaper and allow u to have the rear 02 sensor intact...what they do is prevent the carbon from biulding up and fooling the 02 sensor into thinking all is well behind the cat...EVO guys use them heres a link and they are readily availble at any parts store

http://forums.evolutionm.net/showthread.php?t=114931

8 dollars for a pack of two and 20 mins of work FTMFW!!!!!!!!!

 

damn, i never though of using foulers......that is a good idea.

do these o2 simulators acully work decent?

 

yeah amazingzly.. a friend of mine had them in his stillen y-pipe to get rid of the engine light and it worked great and kept his sensor in better condition apparently.

 

lighter than stock cat, but some members may argue you will have to change your username from cleanmax to something else ?

 

it says dirty max on his sig

 

I use a TP for minor A/F tuning.

 

youll be polluting more. dont do it. get a high flow cat instead.