ABS + Brake Light on...?

[D-MaxPWR]

So my buddy and I tunded my truck today w/efi Live :happy2:...

He put on the 160HP Tune based on the PPE one and Just left th DPF on for now (gonna get it on monday) we went to drive down the street and to get the tranny to learn the tune and we didn't get to far down the block when it started binging and then the ABS came on and also the red Brake light was on :spit:...he quickly read the code and efi said no trouble code or something like that,,,now it keeps doing that every time I drive it

I have an 07 LMM...
Haven't put any pipes/intake yet but they're on there way and I'm not driving like a race car because of it...

What do you guys think it is?

 

[JoshH]

Did you happen to adjust for larger tires at the same time? If so, are they larger than 35" in diameter?

 

[D-MaxPWR]

Did you happen to adjust for larger tires at the same time? If so, are they larger than 35" in diameter?

Hahaha!...Yep! actually they are 35"s...is that a prob?

 

[JoshH]

If you calibrate the speedometer for 35" tires or larger, it causes a problem with the ABS. I'm not sure if there is a fix for it or not. On the old body style trucks, I think you can program the ABS with a Tech II, and it fixes it. I'm not sure on the new trucks though.

 

[D-MaxPWR]

Oh ok,,,I so its not to big of a problem then huh?...I was super scared and thought that it messed something up on it

Thanks for the help that really eases my worries!!

 

[Kat]

Might try 34's instead of the 35's speedo might be off a little. But, should shut the light off.

 

[RPM Motorsports]

Mine also came on after I ran on the dyno and headed home. I was running my small M&H (27.5") tire tune, while using my 33's. Changed the tire size and never saw the light again FWIW.

 

[othrgrl]

Just keep playing with the pulses per mile until it doesn't trip the light - that way your speedo is as close to correct as possible.

 

[rdohara]

just got 37" on mine i fixed it with EFI Live the problem is that its set the light when the front and rear wheels are more then 5% off the same speed as each other