PIR race day #2, trying again to get into a 12..

[TopherSho]

me trying to get into 12's again..
PIR oregon
92 pump gas
street tires
no prep


files to come...

1st few tests will be with no brake boosting above 1500...

 

[TopherSho]

run 1
no brake boost
13.6

 

[TopherSho]

race 2
light brake boost
13.6

 

[TopherSho]

race 3
heavy brake boost
13.8

 

[TopherSho]

i did not need a helmet for this race
race 4
light brake boost
14 lbs boost setting
spark is in the toilet. 
14.3 1/4 mile  ..   

 

[TopherSho]

trying 14lbs setting again.

 

[TopherSho]

wow. i am not sure how 1/4 a pound of boost can be so different.

race 5
light brake boost
14.55 1/4 mile

 

[lamrith]

man she is just not coming down...

Any timeslips to match up with the logs?

 

[lamrith]

wow. i am not sure how 1/4 a pound of boost can be so different.

race 5
light brake boost
14.55 1/4 mile

Run 5 log is empty file

 

[lamrith]

Well log #4 just a quick skim.  I can't reall offer any solution and am new at this myself but a few things caught my attention..
Your IAT never got under 143*, so that will kill spark from what AJP has told us, end of run it was over 150.
You started getting KR at top of 2nd and carried thru rest of the run, topping out @ 3.
I did the math and you 0-60 was 6.19sec.  Were you spinning tires?  was TC off, or was it kicking in?  This is slow 0-60 given your mods and dyno results, almost a second slower than the SHO is rated at in stock trim which makes me wonder about traction or nannies being involved.

Going to skim the 1st run logs now.

 

[TopherSho]

Unable to upload any more logs right now PIR's internet is s***... I just got my ass handed to me by a V6 Camaro I'm making one more run and I'm going home ..

 

[lamrith]

Unable to upload any more logs right now PRS internet is s*** I just got my ass handed to me by a V6 Camaro I'm making one more run and I'm going home JJ

Sorry man, wish I could help more.  Something definitely seems off just based on your 0-60mph times.  you #1 run was better in that regard (5.36), but still not where I would expect given mods and tune.?

 

[TopherSho]

They shut the races down

Did not log last race by accident

But it was 14.09...

I have a ton of very strong negative emotions ATM so I'm just going to sign off and chill out.

I know heat soak is a issue, but i only ran 7 run in 5.5 hours.

My old g35 manual did 14.1 all night for 25+ runs. I am very confused.

Good night.

 

[TopherSho]

home.  last log
race #6
light brake boostig
14.3 something .. to tired to go back and get the ticket.

 

[TopherSho]

Well log #4 just a quick skim.  I can't reall offer any solution and am new at this myself but a few things caught my attention..
Your IAT never got under 143*, so that will kill spark from what AJP has told us, end of run it was over 150.
You started getting KR at top of 2nd and carried thru rest of the run, topping out @ 3.
I did the math and you 0-60 was 6.19sec.  Were you spinning tires?  was TC off, or was it kicking in?  This is slow 0-60 given your mods and dyno results, almost a second slower than the SHO is rated at in stock trim which makes me wonder about traction or nannies being involved.

Going to skim the 1st run logs now.

no traction issues at all.  not even a chirp.  no tire hop.
tc is always off.. i only turn it on in the rain and snow.

car last trip did a best of 13.09 with soft shifts.  this trip was a full 1.5 seconds slower.

tired.  sleep.

 

[SHOwoosh]

i'm curious as to why your ambient temp reading was 104 all through the last run then dropped to 80 right after and also almost no spark advance. I have no answers but wish ya the best of luck getting it figured out.

 

[SHOdded]

Maybe run through all maintenance checks first - fluids, turbo piping, wastegates & BOVs, intercooler, spark plugs.  There was no waterbox at PIR, right, and if so you were avoiding it?

 

[Night Hawk]

  I went through the same thing one night up at New England drag way,  I was ready to throw my helmet into the woods and have a full blown Planes trains and automobile Steve Martin runway meltdown. It ended up being something as simple as the vacuum line that connects to the turbo charge pipes had blown off. ( gave zero symptoms ran fine).  Reconnected the line, put on a clamp to hold it. Whala my times dropped like a stone and my mph jumped. Hope this helps.  ---Hawk

 

[Night Hawk]

If you look at the front blow off valve, its the vacuum line that connects to the charge pipe just north of it.

 

[SHOdded]

http://www.ecoboostperformanceforum.com/index.php/topic,4872