LT1/LT4 Tech 1993-1997

Headers installed, loosing power!!

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Old Apr 18, 2008 | 06:18 PM
  #31  
bidicamaro's Avatar
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Default RE: Headers installed, loosing power!!

ORIGINAL: SpecterGT260

i dont think it does lean you out. i think it just throws a code
Mine leaned out the engine, got hotter than usual (sign or running lean) and had a nice detonation sound coming from it. Wasn't fun....
 
Old Apr 18, 2008 | 06:23 PM
  #32  
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http://store.summitracing.com/partde...140+4294889104

Same O2 for the front and rear, they do read different don't they?
 
Old Apr 18, 2008 | 06:34 PM
  #33  
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Default RE: Headers installed, loosing power!!

If I remember correctly, your '94 should only have two O2 sensors. That's different than the '96+ type setup we are talking about. That and the ones you listed are universal. If you go to AutoZone.com there are OE type sensors that are meant for specific locations.
 
Old Apr 18, 2008 | 06:50 PM
  #34  
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My 94 should also have speed density but it's got Mass Air, guess the conversion's not that hard?
 
Old Apr 18, 2008 | 07:04 PM
  #35  
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Default RE: Headers installed, loosing power!!

I thought '93 was the only year for speed density on the LT1.
 
Old Apr 18, 2008 | 07:23 PM
  #36  
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From what I understand it started in 96 but I could be wrong on that. Hell, I can be wrong on the O2 thing to. But I did it and that was the result, it was on a thunderchicken though so who knows?
 
Old Apr 18, 2008 | 08:03 PM
  #37  
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Default RE: Headers installed, loosing power!!

The 93 was the only year of the 4th gen F-body that did not come with a MAF. 94+ got the reprogrammable PCM and thus new fuel regulation equipment. In 1996 (some 1995 cars sold specifically in CA) got the dual-cat, OBDII setup that had all 4 O2 sensors, 93-95's only have 2 O2 sensors. If you gut the cat on a 93-95 the computer is not going to recognize it, and thus it will not throw a code. If you have an issue with your O2 sensor it's going to affect the mixture.
 
Old Apr 19, 2008 | 12:05 AM
  #38  
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Default RE: Headers installed, loosing power!!

yeah i dont have a cat and it doesnt throw a code there. But i was just wondering im sure the next shop i go to will have more meaningful/truthful results for me and i can fix what i need from there.
 
Old Apr 19, 2008 | 09:59 AM
  #39  
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Default RE: Headers installed, loosing power!!

ORIGINAL: bidicamaro

ORIGINAL: JD1969

Bank 2 lean could be a injector, could also be the front O2. The MAF code is saying somthing is wrong with your mass air flow sensor. My guess is that the MAF is bad and the car is running in limp mode. You should be able to unplug the MAF and the car will still run and drive, it will be down on power and might not idle very well, but it should still run.

Never had a car run after unpluging the MAF?
And on that note, you can pull youre sensors off one by one (replacing them after each time) and when you get to the sensor that doesn't make the engine run any different then that's your problem. Also, if you think it's a certain cylender then you can unplug the sparkplug wire and if the noise goes away you have it. Learned that at hipo shop, neat what you can learn around people building 1400+ hp engines....
WEll they will in many cases. In my car (it's LS1 though) if you unpluge the MAF the ECU defaults to speed density using the MAP sensor to read incoming air, pretty sure the 96 and up LT1 cars do this as well.
 
Old Apr 19, 2008 | 10:12 AM
  #40  
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Default RE: Headers installed, loosing power!!

I have a 94, so i that wont work for me?
 



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