CommodoresPlus

Bit of an update. Due to a much needed family vacation the Gem hasn’t seen too much love. There are some dribs and drabs I can scrub off the list. Exhaust is finished front to back now. Just have to re route the wideband through the floor again. Fuel lines are finished and ready for pressure testing. Made up an air box now I have a little room in…[Read more]

Bit of an update. Due to a much needed family vacation the Gem hasn’t seen too much love. There are some dribs and drabs I can scrub off the list. Exhaust is finished front to back now. Just have to re route the wideband through the floor again. Fuel lines are finished and ready for pressure testing. Made up an air box now I have a little room in…[Read more]

Bit of an update. Due to a much needed family vacation the Gem hasn’t seen too much love. There are some dribs and drabs I can scrub off the list. Exhaust is finished front to back now. Just have to re route the wideband through the floor again. Fuel lines are finished and ready for pressure testing. Made up an air box now I have a little room in…[Read more]

Nah the video simply demonstrates that a flex fuel sensor can not distinguish between ethanol and water.

No big deal really, up to 8% water in the flex fuel mix makes more torque, higher octane, runs cooler, but that’s more than a gallon in a tank.

True. A lot of good info in that doc. particularly the factor of force in weight over the rear wheels to increase kinetic force vs static, and the different ways to look at diff gear choice to suit engine and driving need.

Good acceleration doesnt necessarily always follow an ill-timed torque dump.

Guys the one thing a dyno does measure properly is torque, the one thing the ECU needs to do its job is accurate torque reporting.

Personally kW don’t matter, they are always an educated guess. Whereas you can rely on 1:1 non multiplied torque data from either source when plotted against RPM for realistic BMEP range given compression, fuel or…[Read more]

Torque curve:

Basically means it can launch from idle or haul up a hill at 100 mph in third gear, if needed 

Torque curve:

Basically means it can haul up a hill at 100 mph in third gear, if needed 

Let’s see the actual engine torque curve, please, so we can benchmark yoir setup.

Come on man, that’s all Max Torque at the wheels [uncorrected dyno rollers], don’t fall for that!

Check actual crank torque corrected 1:1 so we can see whatchu got 

What’s the engine torque the ECU is reporting at which RPM… 

Forget the wheel or crank HP we can work that out!

How’s your air con coping   ? Are you running OEM pump?

It’s 38° here in Sydney metro avg off-idle speed 18kph in a 2100kg black wagon  Waeco flat out to keep whites cool.

Before ethanol and VVT I used to feel pangs of guilt dealing with dead butterflies, bees and stuff off my windshield coz ma 700 CFM V8 CO2 generator, now…[Read more]