Before I installed the Radix on my truck I took it to a Transmission shop
and had a Corvette servo installed, after the servo install the truck shifted
nice and firm.

Next I installed the Radix and there tune supplied with the kit and all seems
good mid Throttle shifts nice and firm, but the WOT 1st to 2nd is no longer
firm as it was it kind of slips into the next gear (soft).

I was wondering if anybody else has seen this, it acts like there's so much more torque with the Radix installed that the 1st to 2nd band just can't apply hard enough for a good firm shift, I'm concerned that it will eat up and burn the band from 1st to 2nd.

BTW, I did ride in some else's Radix power truck and its shifts were the same.
(soft)

 

Sounds like TQ Mgmt to me.

 

I am playing with the TQ for the trans mission now.

I've changed the 1 to 2 upshift pressure modifier table by adding 10 to the table from 300ft/lb up.
this change doesn't see to effect it at all.

as far as the Engine TQ it seems to be all disabled, because I don't see any timing being pulled during the shift.

 

what about just trying to add some firmness to it till you like it? i dont know anything about hptuners but im sure you can adjust it till you like it right?

 

Thats what I'm tyring to do but it seems like its not responding to the increased pressure maybe because its maxed out and will not give any more pressure ( i just don't know).

I'm going to try some AMSOIL SuperShift trans oil next, and then maybe a more agressive bilet servo in place of the vett unit.

 

not sure if youve tried the hptuners forums but heres a link to the tranny tuning
http://www.hptuners.com/forum/YaBB.pl?board=gmv8trans

 

Thanks, I'll give that a read.