crappy passes

[disposablehero]

So frustrated, couldn't get traction then the trans didn't want to shift and couldn't hold rail popping a code towards the end of the pass. 1.99 60' and a 13.3 @ 103. Very very unhappy. The da was about 4700. Time for a bigger cp3 and some tires. I'm running Mich ms2 in 265 70 16. Before the twins I could cut a 1.7 60'. Never lost a run but didn't even come close to what I was hoping for. It's strong as can be on the street but goes into bitch mode at the track. Time to spend more money I guess.

 

[paint94979]

Who does your tuning? Maybe drop the PW down to help it hold better rail psi

 

[disposablehero]

Zach tuned the twins. I haven't even sent him a datalog yet. Wasn't even planning on running but a buddy talked me into it.

 

[Ne-max]

Is your trans one of the eBay specials?

 

[disposablehero]

No way. Purchased straight from revmax. We do a bunch of their transmissions in the cummins trucks we do. It has to be the computer. It clicks off shifts like a champ on the street but something about the track makes it keep holding onto gears. I would say the 1-2 shift on my last pass was a full sec of over runbefore it shifted. Then took off like a bat out of hell. Then hangs on in an upper gear too.

 

[paint94979]

How far is your rail pressure dropping?

 

[disposablehero]

Calling for 26 and I see 24 most of the time then it goes to 22 maybe less.

 

[TheBac]

Have Zach drop the pulse first. It will help.

 

[disposablehero]

Need to get him a log. My cp3 is old. Not sure how old but truck has 320k.

 

[DMAX497]

Are you from Utah?

 

[disposablehero]

Amarillo tx

 

[LWATSON]

If your losing too much rail it will make your shifts draw out long.

 

[disposablehero]

Oh yeah? Didn't know that. I'll try and get that issue fixed first. Then worry about tires and trac bars for next season. I'm gonna stick with a decent radial if I can find one. Unless I find some money for new wheels too. This will be a pretty expensive mod. Unless I find a good deal on a dual setup.

 

[disposablehero]

Would some 45% injectors or nozzles help get a little rail back with a lower pw?

 

[paint94979]

Would some 45% injectors or nozzles help get a little rail back with a lower pw?

What is your commanded duration at WOT?

 

[BUST'EM 504]

Did you change your converter when you went to twins?


Sent from my iPhone using Tapatalk

 

[disposablehero]

Twins were the plan when I got the trans. I've put like 5k on the trans before the compounds went on.

 

[disposablehero]

Not sure of my pw. Will have to hit up Zach on that one. But I told him to tune it safe for a stock bottom.

 

[Cknight199]

Not sure of my pw. Will have to hit up Zach on that one. But I told him to tune it safe for a stock bottom.

I bet your pulse is around 2600-2750us. I would also say your cp3 is probably pretty weak at 300k+ miles. But I would just get a log to Zach so he can see what's going on.

 

[bluessmax]

Fuel looks pretty close to on... That pressure drop is about as far as they go before losing power.

My guess is the trans learned some bad habits from not catching traction and needs to learn some good stuff to get back to normal