Data Logs From Power Cruise - Off Street Drags

[Guilt-Toy]

I took some logs of the street races and i am pretty embaressed to say that i totally botched the race with that torana... i stuffed up hardcore.

I got some data together, i did forget to set the ecu to log SPEED as well so i got the data that was logged and set it up into a excel spread sheet.

You can see that the stupid anti lag did not spool as fast for some reason, i think i was too slow on the throttle and i dropped the clutch at 3100rpm when racing that Torana Drag car compared to when i raced the Datto 1200 ute i dropped it at 6100rpm+.

So yeah here is the screen shot and the xl spreadsheet if anyone is interested in checking it out. I cannot say that i would have beaten the Torana if i launched properly because its best quarter is a 8.7 second quarter mile but I can say things may have been different. I guess its all a big learning curve and i know now what NOT to do next time.

Anyways if anyone can give me some ideas on where i stuffed up or whatever then go for it.. I can take constructive critisism.

I converted the boost levels every now and then from KPA to PSI so you guys understand the boost levels i was running, over 30psi!! - 2 bar of boost.

Metric Converter is here, put the boost kpa in my log into absolute KPA to get the PSI

http://skylinecentral.org/upload/MetricCalc.exe

Excel Spreadsheet

http://skylinecentral.org/upload/race.xls

[Fastrotor]

Guilt, any chance of getting a copy of your actual vipec/g4 log file ?

Gary

Ps Can you suggest any help for me in the vipec thread ?

[Swiper the Fox]

ahh the vi-pec...gotta love it.

except no more hiding from poor driving skills anymore for me....its all in the data.

Edited March 3, 2009 by DiRTgarage

[Fastrotor]

And just to comment on the data..... even though you botched the drag car run with the antilag , its obviously alot smoother.... whereas your having to be on /off throttle alot more with the ute run.....

So maybe you need to try a lower rpm limit to reduce crazy wheelspin on launch for when it does boost up properly ? Obviously wheelspin is always going to be there with your power, but the drag car runs shows higher boost and more consistent, so if you can get this with the more instant responce of the dato run......

This is on pump fuel too isnt it ??

Gary

Edited March 3, 2009 by Fastrotor

[RB30-POWER]

is this the one, looks like you were on a sunday drive, haha

Edited March 5, 2009 by RB30-POWER

[joeyjoejoejuniorshabadoo]

lol

[PM-R33]

Wow that Torana has some balls.

[Guilt-Toy]

yeah.. thats the one.. its a 8 second drag car with wheelie bars and chute!

it would not have looked so bad if i did not stuff up the start but you get that

You do know that this Torana won ?

[Swiper the Fox]

  RB30-POWER said:

is this the one, looks like you were on a sunday drive, haha

that resembles a similar race at Powercruise a few years ago...Twoogle vs 2rismo.

[Lithium]

Are those races 3rd gear roll ons or something?? I couldn't watch the clip so just going from the datalog.

And 30psi!!!! How much power are you making on that?

[paulr33]

when you ramp near 30 psi your afrs plummet to low 10s

is this by design as part of a safety catch?

your probably sacrificing power / throughput to cram more boost in safely - ie there might be no gain from this, or it could be negative gain

you might find more power / throughput from less boost and mid 12.5 afr instead

[Guilt-Toy]

Yeah I like to run my engine rich. Especially for power cruise I was expecting it to get hot and I wanted to keep the temps down as much as i could so I tuned it this way.

I never tune my car to 12.5. I would rather sacrifice 10kw and have heaps of extra cooling there then have a tune on the edge which will detonate when the air temps get up there..

The car ran hard all weekend, 3 days worth of thrashing the crap out of it and the engine did not miss a beat! Yes i did go through a full tank of fuel in 190km's worth of track time in ONE day but i had damn good fun doing it.

I normally run 11.3 - 11.5afr on cars I tune with a fair amount of power. Its just safer that way, my 10afr stunt was just something I did for my car because the weather was a bit up there on the sat and sunday.

This was tuned on BP98 and was running on Shell optimax half the time at power cruise.

[RB30-POWER]

first sunday final run vs the ute.