Live action from FUMANCHU182.

[Speedy!]

I'd for sure be interested in learning more about these transmissions. TONS of stuff in there to fiddle with.

I looked at your logs and there's an issue. For some reason HPT doesn't play nice when you start logging some of the transmission PIDS. It's like it starts to lag the software or something so it's hard to tell a whole lot from the logs. I'd turn off most of that transmission stuff and put it in a dedicated transmission dash board file for when you want to look at specific transmissions stuff. Notice how your knock sensor volts appear to hang, the timing starts to look a bit odd, etc. I had the exact same problem and it would literally only take one of the weird transmission PIDs to cause the problem. An example I found was like shift mode, shift situation, all of those seemed to cause me issues. Stuff like output shaft speed, trans commanded gear, torque request all seemed to be fine.

From the logs it was definitely spinning on the launch, and my opinion is that your launching too hard for the track surface you were on. I'd lower down to 1200RPM and roll in to it for starters.

 

[fumanchu182]

This is wheel spin in a nut shell… now I need to go big or go home. Going to experiment. Friend had these and he had six passes on them. 305/50r17. Let the hammering in the well commence.

 

[Speedy!]

I'm curious what difference the wider tire will make.

 

[jgilj]

Had 305’s on my 15 cat and it hooked up good

 

[Mean Cat]

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This is wheel spin in a nut shell… now I need to go big or go home. Going to experiment. Friend had these and he had six passes on them. 315/50r17. Let the hammering in the well commence.

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Now your talking, I didn't think anyone was hearing me , start at 20 psi maybe 19 & rpm at 1500 > 1800.

Thank me later.

 

[Mean Cat]

Do you have Demon converter ? if not 2-3k rpm I think is too high.
FWIW - I do 1500 > 1700 & 20 psi.
And I think you may need a 315.

This.

 

[fumanchu182]

315's accomplished, check my redneck thread, banging in the ribs now and doing a simple how to with a 5lb hammer.

 

[Mean Cat]

315's accomplished, check my redneck thread, banging in the ribs now and doing a simple how to with a 5lb hammer.

I'll check it out. Yep, that needs to be done for 315's, not a big deal though, after I massaged mine in, I took some flat black paint & gave it a couple of coats.

 

[Stormtrooper1320]

Second run is where I started going towards the other lane, got out of and recovered.

Dammit.....I wish I had known about this, I could've entered the Dance Battle

 

[fumanchu182]

Trying for a 9, humidity is insane.

 

[Mean Cat]

Trying for a 9, humidity is insane.

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Nice pass !
We would be a very close race.
I went Friday night & ran about the same in a little worse DA & humidity.
My first pass I didn't get a slip so had to go to the tower to get the #'s but it was 10.18 with 1.48 60'.

 

[Speedy!]

Mph is there. Work the 60' and you'll have it!

 

[coolblue]

Trying for a 9, humidity is insane.

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Dohhh! Sooo close. Admit it, you lose sleep at night dreaming about that 9 second banner under your avatar!

 

[jgilj]

So close but yet so far away, it’s coming 👍👍👍👍

 

[MurderCat]

You got this today! Shake and bake baby

 

[fumanchu182]

Nice pass !
We would be a very close race.
I went Friday night & ran about the same in a little worse DA & humidity.
My first pass I didn't get a slip so had to go to the tower to get the #'s but it was 10.18 with 1.48 60'.

One day well find out!

Mph is there. Work the 60' and you'll have it!

Trued leavin on idle did a 1.54, stupid foot can only find 3k rpm

Dohhh! Sooo close. Admit it, you lose sleep at night dreaming about that 9 second banner under your avatar!

only on tuesday after multiple beers

So close but yet so far away, it’s coming 👍👍👍👍

Reminds me of a flock of seagulls!

You got this today! Shake and bake baby

Car is doing consistent 10.2 in trash weather, still trying to find my 1500rpm foot. So used to bigger launches.

 

[jgilj]

One day well find out!



Trued leavin on idle did a 1.54, stupid foot can only find 3k rpm



only on tuesday after multiple beers



Reminds me of a flock of seagulls!



Car is doing consistent 10.2 in trash weather, still trying to find my 1500rpm foot. So used to bigger launches.

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I’m with ya look how close I was!

 

[Mean Cat]

I’m with ya look how close I was!

That's a tail wind away from a 9, LOL, have you not been to the track since then 3/20 ?

 

[jgilj]

Yes but that’s the pb I’m getting older and slower by the day.

 

[fumanchu182]

So the 9s still elude me, but there is a light at the end of the tunnel. The most recent revision has timing in it, we resolved all fueling issues with the dual pumps and it's go time! The car actually made me hold on each time as I had to steer it. I also did a lot better than I thought. I felt as if I was leaving at 3k rpm only cause I couldn't tell but after reviewing the logs I left at the following RPM: 1001, 1352, 685, 1506 and 1455. The 685 was me just seeing how it felt launching from idle. Here is the data from the day:



Friends with similar cars said my car is pushing those numbers, in high humidity with heat, the fall weather is going to make the car really wake up. Sending logs to tuner and hopefully I'll have some videos up tomorrow. Was really more testing the new tune and fudged some videos... time for beer.