I don't blame you, I saw police everywhere I went. I was a law abiding citizen in my econobox, with the steering wheel on the wrong side.... It's been a bit more than 5 years, I think it was around 8 now. The daughter married into a family that has a condo there.

So what TCM tune mods?

 

Cool. It really does annoy me that we have to drive on the friggin left here too, as if we were in the jolly UK, even though 95% of our cars are left hand drive cars from the US!
On the TCM tune: I had this issue for months with my car hitting the limiter before it would shift on the 2-3 and 3-4 shifts, and I had to keep moving the shift speeds downwards to get it to initiate the shift early enough to avoid that. Even with the shift times shortened and with no TM, it needed significantly lower shift speeds to shift without hitting the limiter. Then I bought myself the Tuning School 6L80 manual and went over the whole process, following their recommended tweaks, which seemed to work well, but it still needed the low mph settings in the shift speed tables.
Then I saw these vids on HPT forum of a couple of Holdens in Australia, and one that was running 10.0s and was shifting like a sequential box. The guy who posted them was recommending that the 6L80 needed the oncoming adapt pressures significantly elevated to shift properly, so I tried what he recommended, and after that the transmission shifted so instantaneously at WOT that I had to put the shift speeds back up to where they were before, because it was shifting too early. It's unbelievable the difference it made. No flare, no lag - it just shifts like it should and at just about the mph that I have in the shift speed tables. I also have the converter locking at 75mph in 3rd and the car pulls like a beast up top now.

 

Hmm, now that it's finally stopped raining, I might get a chance to really test mine out and see if I have any shift point issues. Hadn't thought of that. I tried once and spent a great deal of effort trying to get the car back under control. It looks like it's going to dry up this weekend...

 

Be careful dude! We don't want you to crash your Corvette, especially since you apparently drive it naked!

You should be okay, but even if you don't have a problem shifting, I would try to data log it at some point and see exactly what RPM you're shifting at. Mine shifts at ~6400 on the 2-3 shift and 6300ish on the 3-4 shift - for now.

 

How high did you go with the oncoming adapt pressures? I am trying to learn more about A6's and haven't messed with that portion yet

 

Here's a link to the thread:

http://www.hptuners.com/forum/showth...lling-me/page2

I used the numbers Tre-Cool posted in post #38: 557, 1153 and 1750 kpa.
Tuning the A6 is like black magic. From what I've seen and experienced, only a handful of folks know exactly how this trans, and most of them aren't sharing.

BTW: Apologies to the OP for the thread hijack!

 

Thanks, I'll take a look through it. Is it bad I didn't realize there was a GM transmission tuning section on HPT's forum?

Agreed though.. I don't think hardly anyone truly knows how these things work... I'm going to mess around with the settings on the one in my truck

I increased the line pressures a little, decreased shift time a little, increased shift points and turned off tip in/out torque management and it feels like a different truck already

 

LOL!! There's only so much one can do, I guess. No one is omnipotent. I've been scouring the HPT forums in search of knowledge for the past several weeks, but haven't really learned much, to be honest.
Most of the guys on there "talk code" it seems. You're one of the few that I see explaining stuff in a way that I can understand (somewhat).
I'd be happy to send you the tunes for my truck and car and you can have a look at what I've done on the TCM tune. That way I might get some free advice too!

 

Got the 81mm intalled, boost of 11psi. Probably more than what my stock engine can handle . I am considering 87mm now for expected boost. .. ~9psi.

 

nah it's good for at least 20psi

 

Enjoy it. It's not the amount of boost that kills engines. It's the amount of cylinder pressure/power they make that does. As long as you have plenty of fuel and a good tune, you should be fine

 

A friend of mine blew up his ls3 camaro engine at 11psi. My tuner is concerned about this as well

 

I can blow one up at 5psi if you want..

I wouldn't run 11psi without meth though.

 

After long time, installing now Alky meth kit.

Where should the nozzle be fitted?
At the intake between the sensor & throttle
Or
Between the throttle and blower body.

 

If you're using the MAF for airflow measurements then it has to be after the MAF

If you're running in SD only then I put the nozzles closer to the intercooler on centri setups

 

It's a MAF. I am going option 1. Thanks.

 

Good stuff. Are you triggering it by MAP or MAF?
I have a full Alky Control kit as well, but I don't think I'll be installing it.
I'm currently running the car with a 5 gallon can of VP 109 mixed with 93 pump and my car loves that, with no KR at 16.5 *.
Since I don't drive my car often (enough), I don't mind splurging every couple of months on a can of race gas.
I was thinking of doing one of the new NX multiport meth/water kits with the nozzles in the lid, behind the CACs and downstream from the rotors, so that the motor sees the full cooling effect. But then again, my car doesn't seem to need the extra octane, and it seems that I can't get it to make more than the 11.75-12 psi it's making now, so I may just do a multiport nitrous system instead and get the best of both worlds...?
Happy New Year to you all, BTW.

 

Hey Carson. Happy New Year!
Is there a benefit from moving the meth injection point further upstream, closer to the intercooler? Do you see a better cooling effect from the meth that way on centri setups?
As per my post above, I was thinking the the closest that you can get the meth to the intake port the better, but from your comment, I'm wondering if it works better if the meth has more chance to cool the A/F mixture down before it gets to the intake port?

 

The more time meth has to vaporize the better.

 

Makes sense. I can imagine at high engine speeds the air is flowing so fast that there needs to be a good distance between the nozzle(s) and the combustion chamber for the meth to cool the A/F ratio significantly. Makes me wonder just how well those multi port systems work?