Northstar Engines and System Technical Discussion Discussion, Another visit to the track in Cadillac Engine Technical Discussion; Did some more trial and error testing. I only got to make 2 passes because it was super busy. Both ...
Automobile(s): Cadillac 78 Seville, 78 Coupe de Ville, 92 Sedan de Ville
Re: Another visit to the track
Big Brother is holding your car back. My '70 Impala with bone stock 180 hp 350 goes through the 1/8th in 10.5 sec. That is considered kinda slow. There are no Mustangs going that slow. I saw an Eldo there last week going 10,0 in the 1/8th and I thought he must be babying it. Something doesn't add up. Cars get more powerful through the years but ET's stay the same.
Codewize and I have argued about the effects of Brake Torque Management (BTM). It is part of all GM calibrations.
As I have stated on Highlines DHS with Corsa Exh you can hear the cylinders shutting off when you are on the brake and the gas. Example: If you were to check the stall speed of the converter.
I am driving Highline's 01 Vette and did some tuning. It had a DiabloSport tune in it. On Wednesday after work we met of for a run. The Vette has 2.73 gears in it and the Mustang has 4.56. We lined up and I started to come up on the brake when Highline jumped me. I let off the brake and nailed the gas and the car noise dived.
I started to think about it and it must have been the BTM.
I went into the Platform Matrix and shut it off, but that really isn't the way to do it. That really only shows the Options, so I needed to shut it down.
My VDF didn't have the parameters, so I added them in to the VDF with my VDF editor.
I set the BTM enable RPM to 6700. The engine now need to be at 6700 before the BTM will be allow to Enable.
On a Vette you have an additional device to control Torque.
#1 Retard Timing
#2 Limit the Throttle. This has an Electronic Throttle Control (ETC)
#4 Shut off up to 4 cylinders.
Now you can't hold the rear tires from spinning at 2000 RPM's at all with the brake Oh and no bog either when you release the brake
I don't care what Code says if you leave on the brake (over 1600) you leave on 4 cylinders and retared timing.