will a test pipe do me any good? I have a 2000 Gsr with skunk2 Manifold and cold air intake. Will i loose HP or Gain? which brand should i go with? Thanks for the help.

 

you will free up horsepower, and can acheive better gas mileage

 

will my check engine light come on?

 

yes, if you dont put in the O2 sensor.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ichigo &raquo;</TD></TR><TR><TD CLASS="quote">yes, if you dont put in the O2 sensor.</TD></TR></TABLE>
Or convert to OBDI

 

is it better convert to obd1? will it give me more Hp? thanks.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GserpleaSR &raquo;</TD></TR><TR><TD CLASS="quote">is it better convert to obd1? will it give me more Hp? thanks.</TD></TR></TABLE>
No more HP, but for tunning purposes you need to be OBDI. If you plan on going turbo or staying NA and building the motor you will need it tuned and to do that you need to convert to OBDI

 

Thanks for the help guys.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GserpleaSR &raquo;</TD></TR><TR><TD CLASS="quote">Thanks for the help guys.</TD></TR></TABLE>

 

Other then the tuning, and such being answered, a testpipe is pretty much useless.

The ONLY reason you would really want one, is if you're pushing High hp numbers,
and you need the least amount of backpressure you can get.

High horsepower being 250-300+, because there will be marginal gains otherwise,
And also it's illegal in most/all states, plus since you live in Cali,
you would get raped if any higher authorities found out you ran catless.

 

heh in washington state, I passed emissions with my b16a with no cat it also helped that I had a wideband o2 and vafc2 to tune it to stoic hehe...

 

To answer the brand question, it doesnt really matter what brand it is, just so long as its quality material. OR, go to any muffler shop, and have them fab one up. Bring in your cat, and they can match up the flanges and weld in a O2 sensor bung, shouldent cost more then 50-60 bucks.

 

^^^ That would be cheaper than buying a test pipe as well.

 

 

ebay test pipes (resonator pipes) are about $25-35 shipped I think and also deaden sound a little.

 

get an ebay cat and gut it out and put a pipe through it. you'll have a straight pipe and if any authority's see it. its a cat

 

^ yeah but it'll still sound like your exhaust is infested with bees

just get a high flow cat...it's not worth it to run a test pipe...sounds bad, smells bad, doesnt give you any real gains (unless, as CleanLikeJdm said, you're running high-hp), and you'll risk getting into trouble.

also, even if you do run an o2 sensor in your cat, you'll still likely throw a CEL...unless you get an o2 sensor simulator

 

How do o2 sensor simulators work? do you still keep the actual o2 sensor hooked up or do you replace it with this?

I have had a carsound cat installed for about 5 months and the cel just came on the other day, and i bet its because of the cat(though i havent checked yet).