What can I expect from the following combinations?

[Installshield 2]

The second O2 sensor is what will give you hell without the eliminator...The second sensor moniters the primary cat's preformance...The ECU has no idea (well not directly) the second cat is even in the exhuast though...You can remove that with no problems, but that is by far the least restrictive of the two...The eliminator splices inline between the secondary o2 sensor and the ECU (harness actually), and fixes the output so that the ECU never realizes you did anything...hence no MIL...

Nice data sheets by the way...I have heard some good s*** about that Gtec pro...The runs seems consistent, albeit a bit optimistic maybe on the 1/4 times...Some dudes are hard pressed to get that in a stick I hear...

Playing with some exhaust setups will yeild some good lowend torque if you play your cards right...Just don't go too big, do not get any bigger than the RB...That may mean some goofy transitions from the header to the catback, but it will be better off for your auto...If you through a 2.5" or bigger system in there, the lowend pulse rate will go to s*** and you will most likely make LESS power down low...your auto and wife will never forgive you...

Depending on where you live in NJ and where you get it inspected, you still may be hit by Mr. Inspector by the books and not pass because of the eliminated primary cat...that will depend on luck and where you take it...If it isn't an option, I would skip the entire header plan and go with a Wagner downpipe and high flow cat...The upper portion of the stock exh. mani is simply average, but the restrictive cat and the ridiculous crush-bent downpipe need to find a home in the garbage, or better yet back on Mazda's design floor...If you just get a shorty header, but keep the stock underneath you won't get much...

 

[Matthew]

o/t

happy belated b-day install - i was going to create a thread but i hadnt seen you on in so long so i figured you wouldnt see it.

 

[twilightprotege]

damn...i wrote a big speach about what jamie calls the goofy transition, but the damn post didnt post. oh well....here goes again

i was writing that a lot of race car engineers are deliberately designing a bottle neck somewhere in the exhaust system, usually not long after all pipes that merge have merged. funily enough the awr is like this. huge primary pipe work, large secondary pipe work, then the flex joint. goes down to about 2.1". this is why i went for 2.5" piping afterwards. the bottle neck helps to give back pressure at low rpm and because of the larger pipe work behind the bottle neck, that adds as a suction and sucks the gases much quicker out of the header. not a bad idea huh? but having said that, this is not for everyone, esp auto's. yes you'll still loose power down low with a system like mine. no doubt. but for us manual guys.....certainly something to think about! i have much much more power from idle to redline now than when i had the stock exhaust system

 

[Installshield 2]

o/t

happy belated b-day install - i was going to create a thread but i hadnt seen you on in so long so i figured you wouldnt see it.

haha thanks man...was a pretty good b-day indeed...

I am having a bastard of a semester, but it is winding down quickly...I will be done next week, and then I will be on all the time again...

 

[mypfizzle]

actually in a auto u can smash the pedal to the floor and make it redline.. yay ghetto racing.. when u get big wheels its what u have to do to merge on the freeway. -=\

 

[Installshield 2]

actually in a auto u can smash the pedal to the floor and make it redline.. yay ghetto racing.. when u get big wheels its what u have to do to merge on the freeway. -=\

yeah I was wondering about that...All the auto's I drove would allow you to at least touch the redline barely, then limp it-rip it into the next gear with no authority at all...but I never drove an auto protege...