[Pro Stock John]

1.48 60 is killer, once it all falls into place you should be pretty happy.

[PRAY]

Originally Posted by Pro Stock John

1.48 60 is killer, once it all falls into place you should be pretty happy.

I was pretty happy with the 1.48, the 1.47 was better. If I can get my power nailed down and apply it properly then I think there is 1.45 in it as it sits at +1K DA like it was Sunday.

[PRAY]

Originally Posted by wbt2012

HPT FTW!

LOL. I am working on it. At least I bought it and it is on the shelf.

[cmitchell17]

Any chance there is a TCM table limiting lockup if slip is past a certain threshold? This was a major problem in the Allisons in the duramaxes. EFI Live finally mapped the table out.

[wbt2012]

Originally Posted by PRAY

I was pretty happy with the 1.48, the 1.47 was better. If I can get my power nailed down and apply it properly then I think there is 1.45 in it as it sits at +1K DA like it was Sunday.

That is the shining light IMO. Get that HP Tuners fired up to dial in the trans/converter and you will be a very happy person.

[Pro Stock John]

wbt, what did your Mustang run bolt-ons/e85? 10.5, 10.7? I enjoyed reading about your car in the past, I think it was on YB.

[PRAY]

Originally Posted by Pro Stock John

wbt, what did your Mustang run bolt-ons/e85? 10.5, 10.7? I enjoyed reading about your car in the past, I think it was on YB.

Pretty sure he posted 10.50's.

[wbt2012]

Originally Posted by Pro Stock John

wbt, what did your Mustang run bolt-ons/e85? 10.5, 10.7? I enjoyed reading about your car in the past, I think it was on YB.

Thanks and same here. Appreciate you reaching out. Best times to date:


With better fuel I believe there are some .30's in there. Those passes were made on the stock fuel system so no e85.

To run the fuel I want I need 47lbs injectors and a boost-a-pump. I have the injectors in now and will add a BAP in the near future.

Few pics from that day:





Apologies for the off-topic post.

[Pro Stock John]

wbt if you have a thread on another forum, please share.

Okay back to 6th gens. So these guys are locking their converters top of 2nd gear?

[PRAY]

Originally Posted by Pro Stock John

wbt if you have a thread on another forum, please share.

Okay back to 6th gens. So these guys are locking their converters top of 2nd gear?

Top of first into second is where you want to lock it. In my opinion you don't need the converter any more after the 60ft. I go through the 60ft around 5K or under on the stock converter and 6,200ish on the Circle D. Since the converter is not locking at the top of fist or on the shift to second the shift recovery into 2nd gear is 5,800. This is killing my time and making shifting into second useless. My car makes peak HP at or just below 5,800 and falls off pretty hard after that. Since I reported my IM the fall off is much less harsh though. So all of 2nd the car is on the down slide. With the same shift point out of first on the stock converter the car recovers at 4,600ish which is right before my peak TQ and I get to use all of my power curve in a highly mechanically advantaged gear. When 3rd doesn't lock the same thing happens. It shift recovers at 5,800 and becomes useless. I lost about 2mph in the 1/8 last week and I think a bunch is attributed to the inability to tune the lock up where we need it.

With all the A8's forward gears and how tightly they are spaced, letting the converter slip is a thing of the past. Even all the fast A6 guys I know are locking in 2nd if possible. One says he would lock in 1st if he could. We don't need torque multiplication to cover shift recovery rpm deficits anymore. Plus these engines make a ton of tq. That is why guys are only going to see a .2 to .3 reduction in ET at best with a converter in this car. Gone are the .5 reduction days of old. I could see a much larger reduction in a cam car where you have slaughtered the torque though.

The issue is the software from what I can figure, not the converter. I have no TCC pressure tables to play with. Only base pressures for the gears them selves. I did bump those up a bit for tomorrow and I am going to leave the stock TCC tables stock to see what happens mph wise. I was locking out 1st the other day. Locking at the top of first into second will be a game changer in my opinion. My only other option is to try a MSD to see if there is any gain up top worth a crap or throw a cam in it to extend the power band. I really like my set up and have no real intentions on spending any money on the current set up so getting the converter to lock when I command it to is the critical piece right now.

[Pro Stock John]

6th gen A8 might be a totally different animal, but the 5th gens, if you lock at top of 2nd you might get a strong 60 and early performance, but the RPM drop is worse than if you didn't lock at all. Locking converters always pull the motor down.

Even with the gearing seems to me that locking up at the top of first not necessary but I've never messed with one of those cars yet.

If you look at BH's best slips, if you throw a 1.47 short time in there the car would go 6.9's in the 1/8th and run about the same out back. Would be a 10.85 ish slip.

[PRAY]

Originally Posted by Pro Stock John

6th gen A8 might be a totally different animal, but the 5th gens, if you lock at top of 2nd you might get a strong 60 and early performance, but the RPM drop is worse than if you didn't lock at all. Locking converters always pull the motor down.

Even with the gearing seems to me that locking up at the top of first not necessary but I've never messed with one of those cars yet.

If you look at BH's best slips, if you throw a 1.47 short time in there the car would go 6.9's in the 1/8th and run about the same out back. Would be a 10.85 ish slip.

If you look at my last stock converter slips as well at +200DA our MPH's are almost the same. I was also on a 28" tire vs. his 26" tire. I wasn't getting 1/8 and 1/4 mph's together. But I went 99.7 in the 1/8 with no 1/4 mph and 125.07 in the 1/4 with only a 98.08 in the 1/8 on that pass. If I can apply the 1.47 to those mph's then I think I can get into the 10.70's.

Locking the converter with this gearing shifting at 6,500 get's you back to 4,700 or so on the 1/2 and 2/3. It get's you 5,200 on the 3/4 and 5,100 on the 4/5. So it isn't dragging the motor down below peak tq ever. With the stock IM, even when ported you only have about 1K rpm between peak tq and peak hp. HP falls off hard after that.

Tomorrow I am going to try to get some runs in with different gear lock ups. It just seems to me that if a car runs a couple mph faster in the 1/8 and 1/4 on the stock converter that is locked up that it should do the same with an aftermarket converter locked up as well.