Techno Torque Dyno!!!!!! - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Kirk · 10-27-2009, 09:35 AM

Jaay, I've seen very similar A/F curves for the Pontiac GTO. I just bought one and have been looking at a lot of dyno curves. With the GTO it's mapped to be very rich 10.5 to 11.0 throughout the rev band. Tuners then make a lot of money by just re-mapping the A/F ratio and giving the car 20 HP. Why does Pontiac do this though? Very simple - a rich mix is less prone to detonation, it's safer for the engine. My guess is that Porsche tunes their cars in a similar manner. An ECU reflash then would resolve this.

Kirk

JAAY · 10-27-2009, 09:52 AM

Yup.. trying to get in touch with rhonda over at fvd now..

JAAY · 10-27-2009, 12:15 PM

Re-Dyno fund is up to $40

Thanks
60 more to go.

Boxtaboy · 10-27-2009, 12:42 PM

Quote:

Originally Posted by JAAY

Yup.. trying to get in touch with rhonda over at fvd now..

Jay, you may want to get in touch with these folks. They offer ECU tuning for cheaper than many of the other companies. No affiliation. They have dealers that can do it for you locally too.

I think this is the program you need for your 3.4L: http://www.upsolute.com/index.php?option=com_upsolute&task=car&id=282&id_marke=18&id_model=75

Adam · 10-27-2009, 01:08 PM

Interesting results. It added a bit of hp/tq in the mid range then took away some up high. I hope the learned ECU results are more promising. Jay, keep up the good work. Whatever you decide to do, make sure you control the variable and do another set of runs with and without the techno torque being the only change. I'm sure you already know about isolating variables and will do so, but it's worth mentioning.

JAAY · 10-27-2009, 01:21 PM

YUP YUP... just waiting on some more funding.. We are up to 40 dollars. Only 60 more to go. If you want the after learned curve. PM me for my paypal. Thanks

demick · 10-27-2009, 06:22 PM

I guess I don't understand your graphs or explanations.

You say that the first graph is a comparison of before/after techo-torque install with no other changes.

Then, the 2nd graph is before/after an ECU reset (disconnect battery).

But, the hp vs rpm curves of first and second graphs are absolutely identical, which indicates that the two graphs are showing the same set of runs.

So something seems wrong - either in the graphs that were posted, or in your explanation of those graphs.

JAAY · 10-27-2009, 06:33 PM

Sorry if I did not explain good enough. Yes the hp/tq are the same. The difference in the runs were so minimal that I put them up like this. The only big difference was the a/fs after the ecu reset. I put up that graph to show the base line air fuels. They also were pretty much identical with and without the techno torque. I hope this clears things up for you.

coreseller · 10-27-2009, 06:33 PM

Quote:

Originally Posted by Kirk

Jaay, I've seen very similar A/F curves for the Pontiac GTO. I just bought one and have been looking at a lot of dyno curves. With the GTO it's mapped to be very rich 10.5 to 11.0 throughout the rev band. Tuners then make a lot of money by just re-mapping the A/F ratio and giving the car 20 HP. Why does Pontiac do this though? Very simple - a rich mix is less prone to detonation, it's safer for the engine. My guess is that Porsche tunes their cars in a similar manner. An ECU reflash then would resolve this.

Kirk

I had to laugh when I read your post Kirk. I'm on my second GTO (first one got totalled by a 16 year old who had his license all of 4 days, he pulled out in front of me 2 years back) and got dang near exactly 20 hp from A/F adjustments alone. Now I know why it popped so much on second gear deceleration. VERY stout cars, got over 100k w/o issues from my first one and just turned over that in my newer one.....

Please keep us posted Jaay, I'm curious of the results.