[laynlo15]

Any changes we made didn't affect the trans shifts at all if that's what King meant.

[cjperformance]

Ordered the following. It was basically the equivalent of radz28's list, but for the PTFE variants. My component counts were a bit different too because my setup wasn't quite the same. I looked at Fragola and Vibrant... ultimately went with Vibrant. I'll add it to the first post too as an update.

List of PTFE Hose, Hose Ends, and Misc
1 - VPE-18966 - 10' of -6 ptfe nylon hose
4 - VPE-16886 - Fuel rail adapter 3/8 to -6AN
4 - VPE-28006 - Female Hose End Straight -6AN
3 - VPE-28906 - Female Hose End 90 Degree -6AN
1 - VPE-28806 - Female Hose End 180 Degree -6AN
1 - VPE-10732 - Female to Female 90 Degree Union -6AN
1 - VPE-10792 - MMF Tee - Tee 2x male (arms) and 1x female (trunk)
1 - VPE-10742 - MFM Tee 1X male (arm) 1x female (arm) 1x male (trunk)

[cjperformance]

Good info on the VTT and torque values! This is all really helping my understanding click. You probably heard it when it happened. I all of a sudden just "got it", lol. The interaction between the different torque values, DD, and VTT makes sense now.

[cjperformance]

Originally Posted by laynlo15

I would dial in the pulley you have and rectify any issues with that tune. Then you'll probably only have to make slight changes for the smaller pulley. I think you'll be surprised how much more hp you can make just with the same pulley. I went from 677 rwhp to 707 with just a 3mm pulley change from 98mm to 95 and really not much of a change in the tune. I'm going to be running the 98mm pulley for the 10.00 class at WWtraceway in the headsup class but I'm basically running the 95 mm tune for that class. These are not big jump in any of my tunes, just tiny timing and PE changes, don't think we made any Port %s changes between the pulleys.

I've already got the alcohol tables set up to scale. Total timing on full E would be around 21 degrees, and E50 is around 19.5 total...

I'm thinking if I pulley down, I should still be pretty safe on that timing. I think you were running 24 degrees with 10+ lbs boost right?

[KingLT1]

Originally Posted by laynlo15

Any changes we made didn't affect the trans shifts at all if that's what King meant.

Your trans wouldn't shift right if the VTT was stock with Port Injection. You tables were adjusted and Mike had to tweak them a little more per his post.

[JP374]

Originally Posted by KingLT1

Depending on your current tune, you might need to increase the virtual torque tables where you reduce MAF flow in the ECU. Pulling 30% from the maf will basically make the ECU think you are making less torque.

That is the issue I was having after adjusting MAF on my car when I was blending and getting MS in check. my drivability changed and I had to play with driver demand and VTT. It took me a month ti get my car driving how I like it. That’s when I realized a lot of things in tune are MAF controllerd/related. That’s what scares me with going to thpsi kit now. It drives great, hate to do it all over again.

FYI I am just learning so what I have learned along the way may not be the case 100%, just my findings at least.

[JP374]

Originally Posted by KingLT1

Your trans wouldn't shift right if the VTT was stock with Port Injection. You tables were adjusted and Mike had to tweak them a little more per his post.

This makes sense. When I 1st had my car built the shop didn’t tune VTT and it shifted like crap, it wouldn’t shift firm, real sloppy etc. after getting VTT tuned it was a different car.

Again I’m learning as I go too.

[KingLT1]

Originally Posted by JP374

This makes sense. When I 1st had my car built the shop didn’t tune VTT and it shifted like crap, it wouldn’t shift firm, real sloppy etc. after getting VTT tuned it was a different car.

Again I’m learning as I go too.

[laynlo15]

Originally Posted by KingLT1

Your trans wouldn't shift right if the VTT was stock with Port Injection. You tables were adjusted and Mike had to tweak them a little more per his post.

Ok, didn't know that or if I did I forgot. Thx for the heads up and my bad. When he's tuning and I'm watching I don't always get what he's doing, as you know I'm not a tuner.

[KingLT1]

Originally Posted by laynlo15

Ok, didn't know that or if I did I forgot. Thx for the heads up and my bad. When he's tuning and I'm watching I don't always get what he's doing, as you know I'm not a tuner.

No biggie...I just pay really good attention to Mike's posts when he post. I remember him saying whoever tuned your setup prior had the VTT dialed in pretty good so all he had to do was make some minor tweaks there.

I was just making a point to note that a lot of tuners don't touch the VTT and that is a mistake. Brett Stewart taught me that years ago. I have fixed a few trans tunes by fixing the VTT. It wall cause a really sloppy 4-5 on the A8 if they are not tweaked in.

[JP374]

Originally Posted by KingLT1

No biggie...I just pay really good attention to Mike's posts when he post. I remember him saying whoever tuned your setup prior had the VTT dialed in pretty good so all he had to do was make some minor tweaks there.

I was just making a point to note that a lot of tuners don't touch the VTT and that is a mistake. Brett Stewart taught me that years ago. I have fixed a few trans tunes by fixing the VTT. It wall cause a really sloppy 4-5 on the A8 if they are not tweaked in.

Definitely good info.

My car (A10) had sloppy 5-6 shifts because the shop didn’t tune VTT. Just a FYI

[toohighpsi]

Originally Posted by KingLT1

Your trans wouldn't shift right if the VTT was stock with Port Injection. You tables were adjusted and Mike had to tweak them a little more per his post.

Correct, I think Greg is running 30-35% port, at least 15% of the DI fueling was able to be removed through the PE table, so his MAF was reduced by only 15-20%. Since it only needed a bit more torque to reach the desired delivered torque value it was easily added through the EQ torque table and didn't require messing the the actual VTTs.

You can normally add about 25% torque through the EQ table before you start running into throttle closure problems at the top end - this is the point where you'll have the work on Virtual Torque Tables and normally means you're running more than 45% port injection and sneaking in on that 4 digit power number on full E with an LT4.

Hope that helps

[laynlo15]

Originally Posted by KingLT1

No biggie...I just pay really good attention to Mike's posts when he post. I remember him saying whoever tuned your setup prior had the VTT dialed in pretty good so all he had to do was make some minor tweaks there.

I was just making a point to note that a lot of tuners don't touch the VTT and that is a mistake. Brett Stewart taught me that years ago. I have fixed a few trans tunes by fixing the VTT. It wall cause a really sloppy 4-5 on the A8 if they are not tweaked in.

phil@phdtuning.com took care of that when it was NA and E85. Phil is a very good tuner and also helped me when I was stuck with my own tune when running the C7 and couldn't get it to run faster than 11.06@125. He started helping me with the tuning we finally got it to run 10.90@128. He's been doing a lot of tuning with the Reflex Port Injection. Nice guy also

[laynlo15]

Originally Posted by toohighpsi

Correct, I think Greg is running 30-35% port, at least 15% of the DI fueling was able to be removed through the PE table, so his MAF was reduced by only 15-20%. Since it only needed a bit more torque to reach the desired delivered torque value it was easily added through the EQ torque table and didn't require messing the the actual VTTs.

You can normally add about 25% torque through the EQ table before you start running into throttle closure problems at the top end - this is the point where you'll have the work on Virtual Torque Tables and normally means you're running more than 45% port injection and sneaking in on that 4 digit power number on full E with an LT4.

Hope that helps

Thanks Mike, I'm just kind of a by stander when your doing your thing. Usually lost in what you are changing but always trying to learn. It ain't easy at 71 years old and may not get any easier with the aging process as it is. Thanks for all your help, wouldn't be doing this without your knowledge. Mike it 31% on the Port Injection and it still bogles my mind how we've been able to get this car to run so fast on basically 4 mods, used 2300, Port Injection, Rotofab, E65 on pretty low boost. Everyone should see nice gains after they add the Port and have a good tune. Chris will probably get the low ten he's been wanting if can work on the 60' and 330' and all the other number will fall in line.