911racer

Is there an adjustment for when and how much the car does the ignition cut/retard when upshifting on a 2008.

Thanks

Ed

dass

The shift cut time is adjustable,but the cup car ecu is locked.
Good luck trying to get it unlocked!

cid042

About the "when", all I know is that is linked to some kind of "flex" sensor in the shift lever.

CRex

As per above. The strain gauge in the shift lever is what feeds into the ECU and tells it to cut fuel (technically not throttle--the wdka % stays constant throughout an upshift).

Problem: You'll need to unlock the ECU to edit that... PMNA doesn't do that as far as my interactions with them have taught me...

With these cars I think there's a market for open aftermarket ECUs. Porsche must've made about 800-1000 997s. The Bosch ECUs do time out (as I have experienced myself) and the replacements are prohibitively expensive if not outright unavailable. Somebody with a ready motec-based solution should be able to sell 100 units of these things over time, or am I dreaming?

coryf

http://www.bosch-motorsport.de/media...3105419pdf.pdf


Completely user programmable drop in ecu.

Surfbum

/\ Wish that was available when we were building my car, ended up converting to a Motec M800, luckily we created a pig tail to be able to plug back into a Bosch ECU.

We did end up programming a timing cut for the upshift, make sure you also program a fuel cut or you end up throwing flames out the back.

dass

Finding someone who can use the bosch motorsport software is the next problem.Bosch motorsport expensive with **** support.

cid042

This ! From France, the only capable people I have found are in Germany... Think VGS, RS Tuning...

Glen

Autometrics,best I know of for standard and customized Bosch motorsport related problems and solutions.

http://www.autometricsmotorsports.com/

ace37

Would wiring a small resistor or amp in line upstream of the shift lever strain gauge to tweak the voltage signal offer any benefit, or would it just command a shift a split second early?

CRex

All depends on whether you're trying to retard or advance the blip, or to modify its duration. At a mechanical level this is really just a hall sensor feeding a couple mV into the bus...