Gear change 2009 Challenger R/T

[Wicked09]

I have your Predator #7135 for my Challenger R/T. I'm going to be changing out the 306 rear gear for the Richmond 355. According to what you say the Predator can do, I should be able to adjust that with the tuner correct?? If so, where do I find that in the tuner and is it pretty easy to do?? Or do I need to down load an update?? I was also wondering if you can confirm that the rear end in the 09 Challenger R/T is the 215mm that I've heard it is. Other wise the Richmond gears won't work. Thanks.

[Mike_Levy]

The R/T has the 210mm rear end, and Richmond does make 210 gears. Only the SRTs have the 215.

[Wicked09]

Thank you. Now all I need is the answer on changing the gear ratio with the Predator.

[mikel]

Can do...

[Wicked09]

OK...and how can I do that??

[BigTwin_Georg]

Can do...

I have SRT manual 2009 and I can't change my gear ratio too. My Predator is U7135 rev 9R18.

http://media7.dropshots.com/photos/2537 ... 185650.jpg

[mikel]

It is under quick adjust/axle ratio

[BigTwin_Georg]

It is under quick adjust/axle ratio

I know where it is. I can't change my gear ratio.

[mikel]

what is your calid, and what revision is on the Predator?

[BigTwin_Georg]

what is your calid, and what revision is on the Predator?

Dodge Challenger STR8 2009 manual
callid 68004308AF (downgrade from 68004308AG)
U7135 rev 9r18

Thank you for your interest.

[mikel]

This should be fixed in the latest beta crom Johan has posted...

[BigTwin_Georg]

This should be fixed in the latest beta crom Johan has posted...

That's not good news for me: I'm planning to run with hi-flo catalysators and therefore I will disable rear O2's. Is here another way? Maybe to get 9r17?

[mikel]

If you have to use the latest revision, you will need a custom tune.

[renegade]

I get the fail to change axle ratio also with the u1735 rev9r18 in my 09 r/t six speed. I would like to keep the egr off. If I export the tune I have now and save it as a custom tune, then get the new revison, will I be able to adjust axle ratio in my saved custom tune?

[mikel]

Yes...