so they wont see it on the computer but if they ever put the hose thing over my exhaust pipe i would be screwed right?

 

I think everyone does obd II emissions now don't they? new york? hmmm. well you can always slide your stock back in for emissions sake. I bet they're not going to snake your tailpipe though.

 

what is obdII emissions?
if i have the tuner disable the CEL your saying they wont pick it up at all then?
this is all confusing

 

obdII is just using their scanner to see if everything is in good working order, if your state is in fact doing obdII then they would not be able to see anything is wrong with your car and you pass (they wouldn't be able to detect a problem if cel code is disabled)

if your one of the states that hasn't crossed over to full obdII yet then you get the tailpipe sniffer.

 

**** idk if my tailpipe is gunna get sniffed

 

ok since im a certified NYS inspector (I was a BMW/Mini and volvo tech) Ill try to clear the NYS inspection up. The newer cars are whats called OBD II (1996 and newer) all 1996 and newer use a standard plug under the das for diagnostics. The NYS OBD II inspections consist of 2 parts, first the safety seat belts lights ect. The second is the emission portion.... this is where we hook up the scanner and the computer checks for two things the first is any codes that are present and active (you can have codes stored but if they are inactive example an evap code that was tripped the week before when you filled up with the car running... the code is stored but not activethe computer will just skip it) the second thing the emission machine check is if the car is in open or closed loop. it needs to have 2 or more driving cycles in closed loop or it will spit the test out as OBD II sytems not ready ( closed loop mean the computer is using one or more O2 sensor as feed back to adjust the air /fuel mixture. In open loop it used pre programmed tables ) As long as the loop is closed and no codes present the computer will pass the car. My Trans Am has no cats and is far from stock and I get emission stickers all the time.... Just make sure there is no CEL and the emissions guy is ok with you not having cats and your all set.... any questions feel free to ask me.... (sorry about the long ass post)

 

i custom built my dp. had the tubing mandrel bent at a local shop and welded in the bungs. used the stock cat from a TC. works awesome!

 

Let me tune it, already.

 

yeah I've had my Hahn d/p for the longest..i installed it when my car had 8k miles now its at 30k and no problems since

 

I would go catless then swap for the stock DP later, when you have to smog it. That is what I'm going to do fore sure. It takes an hour to take it out and put it in. Just once a year... I can handle that. They sniff test in California still, for the most part last time I had to do it so I kinda have to do it that way.

 

maby lol i was going for byt or trifecta



o and chris, where is the best place to dyno around here?

 

synapse or albany speed shop

a.s.s. is a land&sea dyno, and synapse is a dynapak.

 

hey im not trying to be a pin in the ass but i dont get the open and closed loops your refering to. sorry for meing so stupid lol

 

sweet, so you could get rid of the whole "learn-down" feature w my car? and tune for my parts?

 

I have the Meagan Racing Catless DP with spark plug defouler mod so no CEL here I paid $163 Shipped and I love this DP.

 

I bought mine from MPX and it came with the defouler =] over 4000 miles on mine and no check engine light

 

If you have any questions about the BADMAB dp, feel free to PM me.

 

MPx catless installed yesterday, no CEL yet. i bought my cobalt 2 months ago used and found out a couple weeks ago it has gms1. added a K&n drop in. sounds beasty not like a suby tho only gets loud if you really get into it on the stock exhaust and on warm up. Bung came with and a easy fit all around and connection.

 

HAhn catted d/pipe,sounds great,no cels!!

 

Hahn is a great choice.

 

i just ordered the bad mab downpipe yesturday. heard its a great quality part

 

And it is on the dock waiting for the UPS pick-up

 

I am going to be running a stock modified DP, we are cutting the cats out and replacing with stainless pipe. As far as the CEL's are concerned with the obdII system and emisisons, hp tuners can help you out with that by disabling the secondary O2 sensor.

 

Put it *on sale* (catted in my case) and my order is sent.

 

ok heres a quick definition off the net:

In closed loop operation the ECU uses one or more oxygen sensors as a feedback loop in order to adjust the fuel mixture. This gives the name ‘closed loop’ from the closed feedback loop. The ECU won’t run in a closed feedback loop all the time, so ‘open loop’ is used to describe the operation of the ECU when the mixture is not being adjusted in this way (usually when the engine is cold or when running under high load).

In closed loop operation the ECU uses the oxygen sensor to tell if the fuel mixture is rich or lean. However, due to the characteristics of the oxygen sensor it can’t tell exactly how rich or lean, it only knows that the mixture is richer or leaner than optimum. The ECU will enrich the mixture if the oxygen sensor shows that the mixture is lean, and lean the mixture if it looks rich. The result of this is that the mixture will swing back and forward around the stoichiometric point.

basically due to the fact the OBDII o2 sensors need to be heated before they start to work properly.... so what happens during the startup process the computer usues a pre-programmed fuel trim (open loop) when they heat up and begin to function properly the ecu uses the data from the sensors to adjust the fuel trim (closed loop) hope that helps.... any other questions just ask.....