Bradenton motorsports park. Track is low elevation. I checked the da times and that's where I got the humidity level. They had to close the track after my last run due to moisture and dew setting in.

 

400 DA is pretty darn good usually

 

Yup, as I would assume. which makes me think my motor is not healthy but not sure until I check it.

 

Tpms light wouldn't take away power would it?

 

it would cut fuel if it flashes

 

Are you 100% positive? Because the check system and tire pressure light was on the whole time due to the drag radials. I don't have sensors in them.

 

if its flashing and no other lights are on and you haven't held down the tcs to disable it then yes

normally if its just "on" tcs is disabled, and no fuel cuts

 

I hold down the button but the check system etc still shows up. with the tire pressure light.

 

I dont think the Tire Pressure Management System (TPMS) will pull power or do any that bs. Its merely a notification that a tire is low or the sensor is not reading correctly. Traction control or other stability control systems yes.

 

Oh Maybe that is what he meant. TPMS usually is just a notification. I was just concerned lol.

 

https://www.clublexus.com/forums/is-...ml#post7018573

The initial step in the valve lash inspection is to depressurize the fuel system by shutting off the fuel pump and running the engine until it stops. I think if you do this, you'll be fine for a compression test. The engine cranks as long as you hold the brake pedal down, so it will be a two man effort unless you have Techstream. Techstream has a compression test function in it that precludes any fuel problems by telling the ECM you are doing a compression test. It also permits you to use it to crank the engine for the actual test.

I had hoped Techstream would evaluate the battery voltage and measure the crank acceleration to compare to known values so you wouldn't really need tools to evaluate compression, but they didn't do that. Maybe some day in the future. Maybe too someday sparkplugs will have pressure transducers in them to evaluate engine performance and alert the driver to an engine with a cold before it turns into pneumonia. But today, that's just wishful thinking. Those plugs from Kistler are not at all cheap.

 

Tesla has the spark plug covered and just about everything else

 

Hope you get it figured out, something definitely robbing you of power as mentioned earlier in the thread. You should be trapping 112+ Failing to get those DR's nice and hot and bogging off the line will explain the low ET, but it's the trap speed that is the larger concern. The other is easily explained/fixed.

By contrast, I've ran stock on balding all-seasons fully inflated ~32psi and still pulled a 2.13 sixty, finishing 12.971 @ 112.69 hot lapping on a test and tune night.

Good luck!