2jzhx60

Yeah but we are discussing different things. You cant expect the same shift times than the above two vids only by changing to a Syvecs. Both of the above car have tuned TCU's, valve body mods and built transmissions. 997 TCU is also tuneable for faster shifts and the 996 TCU isnt, or the change is quite minimal what I have understood.

The Syvecs cant alter the TCU (Transmission control unit) shift times. Only thing it can do is to reduce torque at shift points to possibly make the trans shift faster. That's why asked a video of an actual shift video of stock trans with Syvecs. I think it will be very close to same shift times than with a stock ECU.

s65e90

Years ago, a shop here in NY built a 997 tip and used a controller for the trans to make it standalone basically. Car shifted very fast and was reliable last I heard. Made big power. Was a blue coupe.

2jzhx60

Yeah there are aftermarket TCU's for the NAG1 / 722.6. Heres one for instance: https://ofgear.dk/

Those would most likely need a standalone to make the car happy.

2fcknfst

That's pretty cool; I have the ATS version of that on my 6.0l diesel, works exceptionally well, lightning fast shifts.

vtec_

Do you know if syvecs acts as a piggyback to the stock TCU or is it it's own standalone TCU?

Check this out, directly from syvecs on a 997TT.

G8rJimbo

Great....now I'm gonna spend more money ROFL...I did not know about the Syvecs setup. Do they provide a base program? I've got K16 Hybrids, Marski IC's, 80lbs injectors, Protomotive intake setup and am a little disappointed in my HP numbers (I know it's not all about that, but when you spend a lot of money, you want something close to what advertised HP should be). I'm wondering, what could the Syvec do differently than using the stock ECU? Sorry to hijack the thread here.

blockhed

Maybe instead of tossing $$$ into it address any possible issues, also all dyno numbers read different between correction factors, weather and etc. I wouldn't dwell on the numbers and rather check it's all 100% I'm assuming here but I'd venture to say Syvecs will cost you 10k installed and tuned

G8rJimbo

Oh trust me, I'm not about tossing $$$ into it. This isn't my first auto project. We've addressed all issues and we've dealt with the tuner (who I won't name). Also, we're not depending soley on dyno numbers, but we're def far off what we were told this combo would net, so it's concerning because the source continues to put out youtube videos claiming the same combo makes a certain power level when it doesn't. I'd imagine the cost of the ECU setup is going to be around $4500...tuning will be free because I'll do it as opposed to depending on someone else (I've tuned other cars with AEM, FAST and MOTEC, so this shouldn't be much different).

Bernard IV

If you do install this I'd love a thread with pictures and everything you did.

2jzhx60

A standalone will not usually net any more peak power than a stock ECU. Its the area under the curve as you can tune variocam, different boost and engine safety strategies.

G8rJimbo

Correct. But if I'm going to tune this myself, I want something efficient and detailed. Seems the popular tuning specialist in the 996 field have their own proprietary software they're using.

Bernard IV

It's BS we don't have some type of tuning software. Some of these base tunes for the standard setups should be basically free.

docwyte

Have you put the car on different dyno's and it performs the same? Is it a hardware issue, as in the reality isn't matching the claims? Are you unhappy with the performance on the road? If it's a hardware issue, a stand alone won't make any difference, plus now the car isn't technically street legal as it can't be smogged...

2jzhx60

The stock ECU can be tuned with WinOLS, but theres a steep learning curve. Basically everyone who tunes the stock ECU without Cobb uses WinOLS.

I agree that its BS that Cobb has open platforms like Subaru etc, but the Porsche platform you need to be a ProTuner to able to tune it.

Bernard IV

With WIN OLS can you tap into your current tune and read the parameters?