Anatomy of a 1/4 run with FNBADAZ06

[FNBADAZ06]

Deconstructing a 1/4 mile run.

note: Throttle position of 88.23529 is WOT.

Time 03:25.5 is the launch...3644 RPM but partial throttle and slippage of clutch to get the car rolling. Tire spin initially as evidenced by the immediate 9.94 MPH "tire speed". Look at the AIT and timing !!!!

Time 03:29.4 is the 1-2 shift. Short shifted at 6732 RPM/57.78 MPH, throttle pulled 50% for 3/10 second, IAT at 120 degrees, timing at 4 degrees just before the shift !!!

Time 03:32.9 is the 2-3 shift. Hit the clutch but clipped the rev limiter at 7319 RPM...BUSTED !!! No throttle for 8/10 of a SECOND !!!! Notice IAT is now 105 degrees and allows a timing advance to 15 degrees.

Time 03:38.3....out the back of the timing lights at 6821 RPM...full throttle...100.4 degrees AIT, 117.43 MPH, and 15 degrees timing.

Slip shows 1.93 60'......11.9686 @ 117.52

Let's see....immediate tire spin on launch (dr's are spent) destroys the 60' time, 100+ degree IAT killing my total timing, short shift and clipped rev limiter costing 1.1 seconds (!) equates to ET's off by 1/2 second, RPM off at the trap of 200+ , and MPH off by 7+ MPH...even though I drove her out the back door with the throttle down.

Easy to get these car's in the 11's, huh ???? A lot of crap conspires to keep you in the 12's if you're not on your game and the environment doesn't cooperate

Run log......

Time RPM Throttle AIT MPH Timing

03:25.0 4029 37.2549 127.4 0 20

03:25.3 4342 73.33334 127.4 0 6.5

03:25.5 3644 68.62745 127.4 9.941939 10

03:25.8 3055 88.62745 129.2 14.29154 10

03:26.1 2631 88.23529 129.2 16.77702 8

03:26.3 2607 88.23529 131 20.50525 7.5

03:26.6 3001 88.23529 131 23.6121 9.5

03:26.8 3345 88.23529 131 26.09759 10.5

03:27.1 3703 88.23529 131 30.44719 10

03:27.3 4116 88.23529 129.2 33.55404 8

03:27.6 4509 88.23529 129.2 36.6609 6

03:27.8 4856 87.84314 127.4 39.76776 6

03:28.1 5210 88.23529 127.4 42.87461 5.5

03:28.4 5685 88.23529 125.6 45.98147 6

03:28.7 6096 88.23529 122 50.33107 8

03:28.9 6406 88.23529 120.2 53.43792 8.5

03:29.1 6655 88.23529 120.2 55.30204 4

03:29.4 6732 48.62745 118.4 56.54478 39

03:29.7 6069 28.23529 116.6 57.78752 16.5

03:30.0 4827 88.62745 116.6 61.51575 11.5

03:30.2 5116 88.23529 114.8 65.24397 12

03:30.4 5337 88.23529 114.8 67.10809 12.5

03:30.7 5562 88.23529 113 69.59357 12.5

03:31.0 5730 88.23529 113 72.07906 13

03:31.2 5903 88.23529 111.2 73.94317 14

03:31.4 6080 88.23529 111.2 76.42866 15

03:31.7 6266 88.23529 109.4 78.29277 15

03:31.9 6425 88.23529 109.4 80.77825 15

03:32.2 6593 88.23529 107.6 82.64237 14.5

03:32.4 6739 88.23529 107.6 84.50648 14.5

03:32.7 6875 88.23529 107.6 86.3706 15

03:32.9 7319 88.23529 105.8 86.99197 15

03:33.2 5809 25.09804 105.8 89.47746 35

03:33.4 5209 77.64706 105.8 89.47746 13.5

03:33.7 5271 88.23529 104 92.5843 13

03:33.9 5425 88.23529 104 93.82705 13

03:34.2 5517 88.23529 104 95.69116 13

03:34.4 5599 88.23529 104 96.93391 13

03:34.7 5699 88.23529 104 98.79802 13.5

03:35.0 5798 88.23529 102.2 100.0408 14

03:35.2 5890 88.23529 102.2 101.9049 15

03:35.5 5972 88.23529 102.2 103.769 15

03:35.7 6048 88.23529 102.2 105.0117 15.5

03:36.0 6134 88.23529 102.2 106.2545 15

03:36.2 6217 88.23529 102.2 107.4972 15

03:36.5 6300 88.23529 102.2 109.3613 15.5

03:36.7 6377 88.23529 100.4 110.6041 15.5

03:37.0 6451 88.23529 100.4 111.8468 15.5

03:37.3 6537 88.23529 100.4 113.0896 15.5

03:37.5 6607 88.23529 100.4 114.3323 15

03:37.8 6685 88.23529 100.4 116.1964 15.5

03:38.1 6741 88.23529 100.4 116.8178 15

03:38.3 6821 88.23529 100.4 117.4392 15

03:38.5 6496 24.70588 100.4 116.8178 34.5

03:38.8 5950 26.27451 100.4 116.1964 30.5

03:39.1 5354 25.09804 100.4 116.1964 25

03:39.3 4950 25.09804 100.4 115.575 21.5

03:39.5 4597 25.09804 100.4 114.3323 18

[Two Fangs]

Is it an HPTuners file? If so, post that sucker.

[FNBADAZ06]

Is it an HPTuners file? If so, post that sucker.

Parker,

Would you believe that this run was logged via the ODBII port via an app called Rev on the iPhone ?!!!!!!

The jet car crew and the race car guys couldn't believe it !!!! I hooked it to a fellow racer's ODB port on a Mustang C/S built by Steeda (?) to see how close the data was compared to his HPTuner equipped laptop logging and was impressed !!! I can only monitor 5 delta's on the screen at a time, and I only get 4 cycles per second but it tells me quite a bit on what's going on. I think I sold 4 copies of the app for DevToaster last night

Rev for iPhone

[Two Fangs]

Wow, that's pretty cool! Could prove to be a very useful tool, especially when considering how common the iPhones and apps have become. Cheers, Parker

[FNBADAZ06]

Wow, that's pretty cool!

Could prove to be a very useful tool, especially when considering how common the iPhones and apps have become.

Cheers,

Parker

Does wonder's for me given the investment. On a cool night, it showed me the timing pull that my "splash" of racing fuel takes care of

I'm going to re-install my Killer Bee/Bee Hive combo so I can log/scan/review my SB/LB fuel trims to try and understand why I logged a P0101 MAF and Banks 1 and 2 rich this summer. I had that package on the car for a year but realized that I never got the mesaages during the cool temps of the fall and spring...only the summer/hot months. I can log my MAF rate as well to get a clearer picture of what happened.

[Guest azz061]

very cool data!

[MOTV8]

[Ted Y]

Like Dean said. Very interesting!

[FNBADAZ06]

Like Dean said. Very interesting!

Knowledge is power

[HOXXOH]

Now that I know you can datalog, I'll show you a couple of things to try that'll clip a tenth or two off your ET for less than the cost of a cup of coffee.

[Two Fangs]

Now that I know you can datalog, I'll show you a couple of things to try that'll clip a tenth or two off your ET for less than the cost of a cup of coffee.

I hope you show him how to knock those IATs down and put some timing back in that car, oy.

[HOXXOH]

Now that I know you can datalog, I'll show you a couple of things to try that'll clip a tenth or two off your ET for less than the cost of a cup of coffee.

I hope you show him how to knock those IATs down and put some timing back in that car, oy.

Exactly!

[Buccaneer]

This is some pretty cool stuff when it comes to data logging on the cheap and quick and easy. Victor showed me how it all works while over at Robert's house for the clear bra install, NICE! It makes that "splash" of race gas justified.

[FNBADAZ06]

Now that I know you can datalog, I'll show you a couple of things to try that'll clip a tenth or two off your ET for less than the cost of a cup of coffee.

I hope you show him how to knock those IATs down and put some timing back in that car, oy.

Exactly!

The race teams had a local weather station on hand for their tuning sessions; local track conditions were just over 100 degrees, 21% humidity and 29.6 in-Hg thru 9:30 p.m. We were running at 4700+ feet DA

Without having a modified shroud via a Vararam or equivalent, I see IAT's approximately 5 degree over ambient when in motion on the highway. Even with a modified air path for last night, you're at 100+ IAT's right at startup so nothing short of a chemical intercooler (meth) was going to help. With the factory setup, I need 80 degree ambient before I see no timing pulled for the stock IAT tables, which are set to start pulling at 86 degrees. I have a Halltech KillerBee/Bee Hive combo "CAI" but in reality the Bee Hive attempts to seal the air supply from the underhood hot air in an attempt to control IAT's...no modification to the factory "airbox/shroud" or ramair effect from this setup.

You can see from what I posted for IAT's while making the run, temps at the traps were still above 100 degrees. I wasn't monitoring my MAF readings, but at 29.6 you know I was driving in some really thin air.

Where I got KILLED for timimg was the launch and the first 660'( the area I can LEAST afford the timing pull, low TORQUE numbers for accelerating the car from a dead stop)...once I'm moving at a good clip the factory setup started performing and IAT's were at or near ambient....I wasn't going to see anything better than 16 degrees of timing. At that point in time the damage is already done...my 1/8 mile ET and MPH is REAL low at 7.80 and 92.96 MPH respectively. That's why I'm the only fool running during the summer and Tom and the other smart one's wait for fall and spring

Here's the stock table's for IAT's from HP Tuners....

[Two Fangs]

That looks vaguely familiar, mine looks nothing like that now, LOL

[FNBADAZ06]

That looks vaguely familiar, mine looks nothing like that now, LOL

I've thought of running a meth system SOLELY for the chemical cooling effect on the IAT's.

The added boost in octane for my ingested fuel supply would just be icing on the cake, but I wouldn't tune aggressively to take advantage of it. The meth might, however, satisfy the octane boost I need to handle KR instead of the splash of racing fuel

Amazing how much power I (and other stock C6's) lose in the high summer heat.....I'm guessing at least 40+ RWHP/RWTQ for me

[Two Fangs]

I've thought of running a meth system SOLELY for the chemical cooling effect on the IAT's.

The added boost in octane for my ingested fuel supply would just be icing on the cake, but I wouldn't tune aggressively to take advantage of it. The meth might, however, satisfy the octane boost I need to handle KR instead of the splash of racing fuel

Amazing how much power I (and other stock C6's) lose in the high summer heat.....I'm guessing at least 40+ RWHP/RWTQ for me

I think it is worth investigation, personally. I run meth on my car. I know Nic hates it, and I am sure he has his reasons. But coming from the gulf coast, we use it, a lot, with great success.

[FNBADAZ06]

I've thought of running a meth system SOLELY for the chemical cooling effect on the IAT's.

The added boost in octane for my ingested fuel supply would just be icing on the cake, but I wouldn't tune aggressively to take advantage of it. The meth might, however, satisfy the octane boost I need to handle KR instead of the splash of racing fuel

Amazing how much power I (and other stock C6's) lose in the high summer heat.....I'm guessing at least 40+ RWHP/RWTQ for me

I think it is worth investigation, personally. I run meth on my car. I know Nic hates it, and I am sure he has his reasons. But coming from the gulf coast, we use it, a lot, with great success.

Using it to enhance your power output by bumping timing might be the reason he doesn't care for it...maybe stoich or A/F goes way out of wack..just don't know.

Tim's (SLAMMER) car runs quite a bit different when he has issues with his meth system not working and high local AZ temps.

Me personally, I would want to add it solely to protect the final (non meth) tune to maximize it for all (hot) weather conditions (if that's possible). Also don't know what detremental effects (if any) it would have on the MAF sensor...just don't have any personal experience with meth.

[Two Fangs]

I've thought of running a meth system SOLELY for the chemical cooling effect on the IAT's.

The added boost in octane for my ingested fuel supply would just be icing on the cake, but I wouldn't tune aggressively to take advantage of it. The meth might, however, satisfy the octane boost I need to handle KR instead of the splash of racing fuel

Amazing how much power I (and other stock C6's) lose in the high summer heat.....I'm guessing at least 40+ RWHP/RWTQ for me

I think it is worth investigation, personally. I run meth on my car. I know Nic hates it, and I am sure he has his reasons. But coming from the gulf coast, we use it, a lot, with great success.

Using it to enhance your power output by bumping timing might be the reason he doesn't care for it...maybe stoich or A/F goes way out of wack..just don't know.

Tim's (SLAMMER) car runs quite a bit different when he has issues with his meth system not working and high local AZ temps.

Me personally, I would want to add it solely to protect the final (non meth) tune to maximize it for all (hot) weather conditions (if that's possible). Also don't know what detremental effects (if any) it would have on the MAF sensor...just don't have any personal experience with meth.

I think the best way to use meth is to use it as a means to reduce IATs by using it as an evaporative cooler, much more than using it as a power enhancer by dialing in insane timing through the additional octane it offers. Using the smallest possible nozzle and spraying when the MAP is over 85 or so will decrease IATs greatly, bringing available power up under WOT. If the meth system takes a dump, who cares. The car is in the same shape it would be without the meth system, pulling timing and down on power, but not by any means in a position to destroy the engine.

However, using a ton of meth to add another 6 degrees of timing under boost through the octane benefits it offers could leave you in a world of shit if it decides to stop working while your boost gauge is reading 15 pounds or so.

As far s simple set-up, you would want to isolate an IAT away from the MAF, if it is integral. Spraying meth across the MAF can corrode the thermistors and also lead to some relatively goofy tuning issues. The order in the intake tract as the air travels should be MAF, meth nozzle, IAT sensor.

[FNBADAZ06]

I've thought of running a meth system SOLELY for the chemical cooling effect on the IAT's.

The added boost in octane for my ingested fuel supply would just be icing on the cake, but I wouldn't tune aggressively to take advantage of it. The meth might, however, satisfy the octane boost I need to handle KR instead of the splash of racing fuel

Amazing how much power I (and other stock C6's) lose in the high summer heat.....I'm guessing at least 40+ RWHP/RWTQ for me

I think it is worth investigation, personally. I run meth on my car. I know Nic hates it, and I am sure he has his reasons. But coming from the gulf coast, we use it, a lot, with great success.

Using it to enhance your power output by bumping timing might be the reason he doesn't care for it...maybe stoich or A/F goes way out of wack..just don't know.

Tim's (SLAMMER) car runs quite a bit different when he has issues with his meth system not working and high local AZ temps.

Me personally, I would want to add it solely to protect the final (non meth) tune to maximize it for all (hot) weather conditions (if that's possible). Also don't know what detremental effects (if any) it would have on the MAF sensor...just don't have any personal experience with meth.

I think the best way to use meth is to use it as a means to reduce IATs by using it as an evaporative cooler, much more than using it as a power enhancer by dialing in insane timing through the additional octane it offers. Using the smallest possible nozzle and spraying when the MAP is over 85 or so will decrease IATs greatly, bringing available power up under WOT. If the meth system takes a dump, who cares. The car is in the same shape it would be without the meth system, pulling timing and down on power, but not by any means in a position to destroy the engine.

However, using a ton of meth to add another 6 degrees of timing under boost through the octane benefits it offers could leave you in a world of shit if it decides to stop working while your boost gauge is reading 15 pounds or so.

As far s simple set-up, you would want to isolate an IAT away from the MAF, if it is integral. Spraying meth across the MAF can corrode the thermistors and also lead to some relatively goofy tuning issues. The order in the intake tract as the air travels should be MAF, meth nozzle, IAT sensor.

Isn't the IAT sensor intergated into the MAF assembly on C6's ?

[Two Fangs]

I know mine is, it's an '08. I did not want to speak to others. I primarily tune race cars and not street cars, so can't say about year corvettes other than mine without looking up the service information. ***EDIT*** After looking an '06 Z06 up, it is indeed integral with the MAF

[FNBADAZ06]

I know mine is, it's an '08. I did not want to speak to others. I primarily tune race cars and not street cars, so can't say about year corvettes other than mine without looking up the service information.

***EDIT*** After looking an '06 Z06 up, it is indeed integral with the MAF

Ah, heck with it.....50HP dry shot of NOS into the airbridge with a load controller...solely to control IAT's of course

[Guest azz061]

Victor hooked his device to my car tonight and it was amazing the timing pull and the inlet air temps we were seeing!

[FNBADAZ06]

Victor hooked his device to my car tonight and it was amazing the timing pull and the inlet air temps we were seeing!

111 degree air temps does no one any favors

Is summer over yet !?????? geez

[Guest azz061]

i am going to look into that alternative cooling idea i had!