subbie racer

i went to a shop today about my ABS light being on and not working, they asked me if i did any work to it and i told them that the owner before me installed 3.73 gears and they think thats why my ABS isnt working that its outta sync, they told me that i need to get a tune, i been told it would be $460 with dyno time to have everything tune by HP tuners (the shop that told me that i need a tune is not the one doing the tuning) do u think this could be true about the ABS? is $460 a good price for the tune with dyno?

subbie racer

and what kinda hp gain would i be looking at with comp cam/ long tube headers/ magnaflow mufflers and a lid style intake

chazzychaz

iTrader: (39)

If I remember correctly even tuning can't turn off the ABS light, I think that's one where you just need to pull the bulb. I could be wrong though.

What are the specs on the cam?

subbie racer

im not sure about the specs on the cam since it was put it by the last owner, it feels like a mild one tho

i would like to fix the abs i hate when they lock up, i lost one car before to the abs failing on me

http://www.youtube.com/watch?v=tO99L...el_video_title heres a video of my car taken yesterday

poltergeist 02

iTrader: (65)

i put a 3.73 in my ta and no abs light so far. i don't think a gear change will cause this problem. i would post this in the gears and axles section and see if you get better results.

subbie racer

if the gears didnt cause the light in ur car, i wonder if its something else, they said the scanner couldnt pull up anything and that there was no signal

still wondering about what hp range i would be if i get the tune

subbie racer

anyone ? on the hp range? cuz i wanna see if its worth tuning or not

macca_779

Who the helll could diff gears cause it. It's not like there is a difference in front to rear wheel speed.

2xLS3

iTrader: (3)

This has always perplexed me also, If IIRC on the F-bodies with the NW9 option (also know as the 4 channel system) you have 4 speed sensors, one for each wheel. One the ones without the NW9 option, are know as the 3 channel system, they have one for each of the front wheels and one mounted on the carrier, in the rear end. Unless whoever is doing the gear change, isn't reinstalling the ring on the carrier properly, I don't see why the light would come on. Unlike the trucks that have an output from the PCM, to supply the rear tire speed to the EBCM, which do need to know the gear ratio, the F-body is directly reading the axle speed, after the driveshaft speed, so the rear ratio shouldn't mater.

2xLS1

iTrader: (25)

If you originally had 2.73 gears and the car has 3 channel ABS, and they changed the carrier to a 3 series for the 3.73s and did not use the reluctor wheel for the 3 series carrier, then it could cause the ABS error. 2 series carriers and 3 series carriers use different reluctors to properly position the reluctor under the sensor in the housing. I've seen shops just move the 2 series reluctor to the 3 series carrier and cause this problem.

2xLS3

iTrader: (3)

Thanks, now that makes sense
This now makes me wonder, if like myself, they didn't know there was a differance, what else is the shop missing?

subbie racer

http://www.youtube.com/user/notsodar.../0/iAplh7nhyA0

finally got tuned. COMP cam, long tube headers, full 3inch exhaust with magnaflow muffler

Pushing 367.98 HP and 366.08 Torque