[radz28]

Some tuners also say that a 103 isn't worth it under 700, but there are videos showing there is a gain. Same kind of weather conditions; SAE; etc. So...

[KingLT1]

Originally Posted by Z OH 6

I wonder if there's more to be gained on the A8 than the A10 by TCM tuning because Vengeance and Jannetty don't seem to think its worth doing at 700whp without a cam. You and King both have A8s and probably both have TCM tunes so maybe you are seeing decent gains even in a stock vehicle but maybe it just isn't necessary on the A10 until its time to raise the shift points or torque management becomes an issue with high HP applications.

The A8 stock tune is definitely worse then the A10. Either way You can not fully deal with the cars Torque Management restrictions until you gain access to the TCM. Also tuning the TCM for the ability to launch in second gear can be beneficial is many situations...especially on the street. Imo if you can tune the TCM, then tune the TCM if you are tuning the ECU.

Look at Jorgelovesspeed youtube channel. He has logs posted of his light bolt on Zl1 closing throttle on the launch due to the stock TCM and short shifting.

I believe what Vengeance and Jenetty is saying that you personally won't see a lot of improvement based on how you use your car. And that could be true.

[Z OH 6]

Originally Posted by KingLT1

The A8 stock tune is definitely worse then the A10. Either way You can not fully deal with the cars Torque Management restrictions until you gain access to the TCM. Also tuning the TCM for the ability to launch in second gear can be beneficial is many situations...especially on the street. Imo if you can tune the TCM, then tune the TCM if you are tuning the ECU.

Look at Jorgelovesspeed youtube channel. He has logs posted of his light bolt on Zl1 closing throttle on the launch due to the stock TCM and short shifting.

I believe what Vengeance and Jenetty is saying that you personally won't see a lot of improvement based on how you use your car. And that could be true.

Yea, I won't argue that second gear launch could be beneficial if you're purely drag racing and have enough power that makes first gear practically unusable. That being said, Vengeance and Jannetty didn't ask me how I use my car so I'm inclined to believe just based on the mods I have and whp, that its just not much to be gained to warrant the cost of TCM purchase and tuning.

[Z OH 6]

Originally Posted by radz28

Some tuners also say that a 103 isn't worth it under 700, but there are videos showing there is a gain. Same kind of weather conditions; SAE; etc. So...

I don't know how a 103mm would be beneficial without opening the snout in the blower at which point, that's where the real power would be gained in conjunction with the TB. I just can't see any power gains to be had from a larger TB as long as the snout is still the restriction.

[clg82]

Originally Posted by Z OH 6

I don't know how a 103mm would be beneficial without opening the snout in the blower at which point, that's where the real power would be gained in conjunction with the TB. I just can't see any power gains to be had from a larger TB as long as the snout is still the restriction.

would a 103 be beneficial on a maggie?

[Z OH 6]

Originally Posted by clg82

would a 103 be beneficial on a maggie?

Yes, with 103mm snout.

[JSH]

Originally Posted by KingLT1

Imo if you can tune the TCM, then tune the TCM if you are tuning the ECU.

I've contacted both HHP and Pray about my TCM tuning, so

[Z OH 6]

Originally Posted by JSH

I've contacted both HHP and Pray about my TCM tuning, so

Jannetty told me that he prefers to the tune the TCM with the ECM if I recall because some tables are needed from the ECM also. Just letting you know up front that it might require both.

[radz28]

Originally Posted by Z OH 6

I don't know how a 103mm would be beneficial without opening the snout in the blower at which point, that's where the real power would be gained in conjunction with the TB. I just can't see any power gains to be had from a larger TB as long as the snout is still the restriction.

I feel like you're just arguing semantics. Which is fine. I don't need to convince anyone else, nor is that my goal. I like to try to transparently share my experience and what I've read/heard/seen.

I know fully well you can't even run a 95 or 103, without at least an adapter (95), or porting (103). I'm just saying some of these shops might answer questions with a certain frame of mind. I don't know. My point is that there are clearly gains with a 103 .

I'm still interested in what anyone that takes the plunge say. I know that sometimes, for some people, in some circumstances, big gains for them are small gains for others.

[Z OH 6]

Originally Posted by radz28

I feel like you're just arguing semantics. Which is fine. I don't need to convince anyone else, nor is that my goal. I like to try to transparently share my experience and what I've read/heard/seen.

I know fully well you can't even run a 95 or 103, without at least an adapter (95), or porting (103). I'm just saying some of these shops might answer questions with a certain frame of mind. I don't know. My point is that there are clearly gains with a 103 .

I'm still interested in what anyone that takes the plunge say. I know that sometimes, for some people, in some circumstances, big gains for them are small gains for others.

Its not semantics though, there is a difference between running a 103mm TB with a ported match snout vs running a 103mm TB with an adapter into a stock snout. I'm just making sure that point is clear.

[Camaro1973]

Originally Posted by Z OH 6

Its not semantics though, there is a difference between running a 103mm TB with a ported match snout vs running a 103mm TB with an adapter into a stock snout. I'm just making sure that point is clear.

Always starting trouble you

[Z OH 6]

Originally Posted by Camaro1973

Always starting trouble you

[Purplt1]

Bringing this back..Anyone running the hhp tcm yet?

[radz28]

Not many brave souls, lol. That's a lot of money.

What would be killer is understanding, better, what, for example, did Pray change in Jorge's tune. Was it shift firmness/quickness/1st Gear WOT in the TCM, and the rest in the ECM? I know the person that helped me out (A LOT) made changes in the ECM that changed the behavior and TMA. That car hasn't made it to the track to see if the TM is still there in 1st Gear at WOT, but maybe that's a good safety feature (for the powertrain) to have. Is anyone going to cry over a tenth or two? Maybe. Probably someone like me who like to optimize my combination.

Like King' already said - there's lots in the ECM that helps. He's also mentioned a couple other settings that are only in the TCM. I need to find more answers before I take this plunge. It seems like there are many others in a similar camp, perhaps.