I here some test pipes cause CEL codes. Can someone recamend a test pipe made for a 97 ITR. Are test pipes pretty much the same, except for size variations?

I did a search and someone had www.testpipes.com and after going there I found a 2.5" test pipe with the following description...

POLLISHED 2.50",COMES WITH 2 02 SENSOR BOSSES WELDED RACING ONLY NOT FOR EMMISSIONS OR STREEY USE OFF ROAD ONLY

It seems that the sensors would fit in fine and not cause a CEL. But it says Welded, does that mean the test pipe itself must be welded into place, or the sensore bosses are welded on?

Thanks for the help...

 

i would also like to know this, i have a jdm 4-1 and i want test pipe that i can use with an and aftermarket cat back exhaust, i dont care about the cel, i already have an obd1 ecu

 

well, there are alot of companies that makes test pipe. yes, most gives u the CEL. if u dont want the CEL then, u have to either go to obd1 or get a o2 simulator. comptech and T1R makes pretty good test pipes.

 

SMSP

 

Support the Expo sponsors.

Test pipes will throw CELs cause the second O2 is looking for Cat efficiency. Not cat = CEL. YOu can trick it with a resistor or go to OBD1 like mentioned above.

 

Testpipe.com is ****.

DO NOT buy from them unless you go there to test fit and pick it up.

I had TWO orders cancelled because they didn't bother to send me a tracking number, and I found out they had never made the pipe. Third try since i had to have something fast, it did not fit, I paid extra shipping to get it there fast (i was ENSURED that i would not be charged extra for this) and o2 bung was on the wrong end. I had to drill out the holes of the flange in order to get it to connect.

Total Junk. Bad quality, front flange to connect to header rattled and was too large, and BAD BAD customer service. It was also too long, they measured incorrectly and didn't really care to fix it.

I only got 'good' customer service by threatening to cancel orders and getting very pissed off at them, which I hate to do.

Support EXPO sponsors.


[Modified by Chris N, 12:51 PM 3/6/2003]


[Modified by Chris N, 12:51 PM 3/6/2003]

 

that's surprising because i ordered mine from there to and had good customer service and mine fit perfectly 2.5". bolted right on down side is cel

 

I agree, support the EXPO Sponsors SMSP

But if you want something quick, cheap, and one that works, just go to your local muffler shop they'll make you a test pipe in less tan 30 min, costs less than $30.

 

SMSP Quality!

There is my SMSP Test pipe . . .

 

If my test pipe only looked like that....

I set mine on fire a few weeks ago, so now it looks worse. It will make a good fireworks launcher i guess.
Needed a break from installing GC/Konis on splitime's car....

 

Never a doubt about that one, thats why hes getting half of this months paycheck

SMSP Quality is second to none

 

will the smsp straightpipe throw a CEL on OBD2's?

 

All testpipes throw a code in OBD2.


[Modified by Chris N, 1:39 PM 3/6/2003]

 

what is the performance loss in just running a the stock cat

 

not if you place both o2 sensors right next to eachother.

 

Bootyful..SMSP

 

not as bad if you gut it.

 

ehhh local muffler shop... $50 bucks

 

Incorrect! .................
I have a T.P. from Testpipes.com w/ the O2 bung that has a piece of cat material in it (for almost 2 yrs. now) and have never thrown a CEL on my P73 ECU.

 

What i was saying is that a test pipe (i.e. straight through piping) WILL throw a cell. That is, unless you have something rigged like you do, or have the sensor wrapped in aluminum foil or something like that.


[Modified by Chris N, 2:43 PM 3/6/2003]

 

Test pipe is a straight through piece of pipe. Straight pipe with catalyst in it is a funky shaped cat. No way around that. Test pipe + OBD2 = CEL.

 

If you wrap the o2 sensor in aluminum foil or use a piece of cat material, do you still need it in the o2 bung? because i plan to do an obd1 conversion later which won't require an o2 bung. But i need a test pipe right away.

 

Uhhhhhhh, .....no. The cat material does not penetrate the flow area. The pipe has a circular cross-sectional area all the way through......tell me another one.

 

Lets see a picture of this. I don't quite get what you are implying.

 

How's this:


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[Modified by GM2000ITR, 1:35 PM 3/6/2003]


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