ECM Modification By FeatherFoots Friend

[FeatherFoot]

I'm Glad you did. I haven't talked to my friend recently so I'll give him a call and reply in a day or so.

FF

[AlaskaVX]

One more time

[FeatherFoot]

He said the 6 cyl programmer is third in line. He has a Corvette and something else then the V6.

He's bigger than I am so I ain't gonna lean on him too hard.

FF

[AlaskaVX]

Is it possible that he could have it done before May 30th? I'm trying to compete in a "King of the Street" competition and the only requirement I don't meet is running a 14.999, I'm hoping that with the ECM mod and 6, possible 7psi I might just be able to pull it.
High hopes,
Alan

[Baxman]

John, will you and your buddy be doing a baseline and post-mod dyno? I know dyno time isn't cheap, but it will go a long way in avoiding any misunderstandings or "inadvertant overstatements".

Two good questions above are still unanswered: In the multi-mode ECU, how would the driver select the desired mode?

Will the VXs slushbox tolerate more torque than the S/C already provides? I think its rated for 250 lb/ft.

Thanks

[SGT.BATGUANO]

To answer 1 of your q's, a multi-detent/position thumbwheel is likely to be used.

[FeatherFoot]

He takes a stock vehicle and dynos it

Then a computer is used to start tweekin the fuel and timming matrices while on the dyno. The power and torque are maximized for all throttle positions between idle and WOT in 10% increments, and RPMs from idle to WOT in 200RPM increments.

example: 600 rpm idle and WOT of 6000rpm is 5400 divided by 200 (rpm step size) equals 27 rpm points times 10 throttle position points or a total of 270 points in the matrix.

there is a matrix for each program/setting.

the ECONOMY setting will maximize fuel mileagewhile maintaining a smooth running engine.

The TOW/HAUL setting maximizes the performance between 45 and 75 MPH but keeps it pulling strong all the way to redline.

The PERFORMANCE setting maximizes performance between 80% and 100% WOT That is where we block the throttle open and tune to each rpm.

Of cource there are the other niceties like rev limiter and speedlimiter dial in modifications torque convertor tuning, transmission shift points etc. that you have to input. The device plugs into the OBDII socket and downloads your stock program then you upload one of the programs to the ECU.

That way you are always able to re-load your stock program before having the VX serviced. (prying eyes will never know)

He then makes a dyno run in each program to compare to the original.

FF

[WyrreJ]

So who has a super-charger, lives nearby and is willing to be the guinea pig? What about needing a stronger transmission?

[chumone]

Keepin' this thread alive.

Any updates on when your friend's going to be able to look at the VX, Featherfoot?

[FeatherFoot]

talked this week.

they are submitting the Corvette v8 plus others to CARB this week or next - after approval they move on to the V6s. I think the 3.5 is #2 in the que.

FF

[Cyrk]

Sweet! hope this pans out!!!

-Dave

[AlaskaVX]

Ohhhh, I'm so anxious! Thanks for the update Featherfoot!

[MachineVX]

Any progress on this?

[xdfarrx]

I read that revotechnik, sold through greedspeed, greedspeed.com is universal?? I didn't think this was a 'universal' application