ok i have a 2000 WS6 (LS1) A4
Mods: hooker longtubes, custom ypipe, slp loudmouth
when i had my modifications done..i realize my SES light came up. i was told it was perfectly normal with every exhaust modifications, but on the other hand i was also told that i would require a "tune" if that was to be done to my car. Is it true that i need to "tune" my car? and would there be ne problems that would arise in the future due to the SES light?
The SES light is on because of the modifications that were done to the
exhaust such as egr, air pump and supply tube (if that had to be altered)
and o2 sensors that were changed with the factory manifolds came off and
the aftermarket headers were installed. Were O2 sims installed to talk
back to the pcm/ecu? I just bought a loaded '02 T/A Ram Air WS6 6-spd
hurst and am looking into exhaust mods. I am not going to do all that
stuff to it now because I dont like the fact that it is not original and it
does screw with the computer. I am just going to run true duals back and
either run str8 pipes if not too too loud or install performance mufflers.
Is the light that is on the Check engine light? We also have a check
gauges light that comes on for things such as fuel being low and other
instumentation anomalies. From what I have read and researched, you can
get a chip to correct the light from comming on or you can also hook up a
hypertech tuning computer to disable the light for the reasons that it is
coming on. This is what I don't like. I do not want anything screwing
with the vehicle computer. I have also heard bad things about the
hypertech computers that people rave about for aftermarket performance
tuning. Your call! TONS of the T/A's I have seen modded at car shows have
that SES light on. OBD II is very sensitive. From what I hear with all
these expensive aftermarket exhausts too is that you can install O2
simulators that essentially tell the ECU what it wants to see and not the
reality of the emmisions. That is one way to get around that SES light.
Check my car(s) out at http://cmeseadoin.fbody.com :thumbs:
yes, 02 sims were installed but only for the headers i think. i was told
there are suppose to be 4 sims, so i think 2 are installed that came with
my headers and the other 2 which are for my exhaust (which didnt come with
The light that comes on is the service engine soon light and thats it. Also i used my neighbors predator programmer's diagnostic test (to get rid of the SES light). It does take out the light....until about 10 mins it comes back on. The light doesnt bother me, its the things that "could" happen that bothers me. Now when im driving i can smell either rich or lean fuel (dunno the difference) and im sure in the long run its gunna cost me. So maybe i'll just go ahead and pay extra money to get a "tune" and get them to fix my emissions and everything.