Loosing power - cant burn the tires!

**Spaz** · 08-22-2008, 04:51 PM

Originally Posted by cobrakiller99

if you take the cats off completely, ive heard from some people that the computer will run in limp mode. is that true. i plan to go lt headers and y pipe next year.

true if you don't have the rear 02's tuned off or sims installed... i have no cats and no problems right now other than my front driver side 02 taking a shit on me... after i replace that i should be golden...

**Spaz** · 08-22-2008, 04:53 PM

Originally Posted by Zedtwentyeight

so i know that i may get some harsh feedback for this, but today i decided to de-screen, and polish my MAF. Also, 1 of the little sensors that everyone says to stay away from was black as can be. I managed to clean it up (carefully).

So after doing all that and discon the bat for a while i started her up and took her for a spin.

Would i be crazy to say that i noticed a huuuuge difference? I could def spin the tires all that i wanted to.

Any thoughts?

not crazy at all... with taht sensor being all crudy like that your car was probably running like shit... you just got your normal power back...

**cobrakiller99** · 08-22-2008, 05:22 PM

how would you turn the rear o2 turned off?

**Spaz** · 08-22-2008, 05:51 PM

Originally Posted by cobrakiller99

how would you turn the rear o2 turned off?

through a editing program... or o2 sims...

**1972_Z-28** · 08-26-2008, 10:04 AM

I have 02 Z28 A4 with the 2.73 gears and the car is stock from what I can tell besides mufflers. This being my first LS1 should I be able to spin the tires with out power braking?

**Zedtwentyeight** · 09-13-2008, 07:09 AM

So the light is back and i have an appointment to go get the cats checked out. They told me if my car wasnt stock it wouldnt be covered. What exactly does that mean?

I have a new lid ported tb and tb bypass and a descreened MAF. Thoughts?

**wenn_du_weinst** · 09-13-2008, 01:17 PM

they probably won't notice that if you have your stock lid I would throw it on quick it takes like 5 min

**ls1speedster** · 09-15-2008, 10:31 AM

ur cats will mess up your o2 codes.. mine after the cats were out... o2 sensors are some of the biggest probs wit the TAs

**Zedtwentyeight** · 09-15-2008, 04:44 PM

So i took the car to the dealer and it turned out to be one of the cats was bad, so they are gonna replace it. My question is do they replace both cats or will they just do the one that's bad? I thought that it was one piece so they'd have to replace them both. Am i right or wrong?