Well, wednesdays are pretty much the only days I can get down to the track for some runs and lately most wednesdays have been pretty poor weather, even got rained on while in the staging lanes a month ago. Yesterday was the hottest day of the year and probably the hottest day I've ever driven the T (bought it in December).
Car hasn't been running the coolest lately and I'm waiting on dual ramcharger fans and some RMI 125. I think it was around 92 degrees outside on my ride to the track. My temp readings went up over 200 to around 205 or so, without even stomping on it. I figured maybe I'd get some cool down time to help, but I wanted to put a run in fairly quick. Once I started up and waited in the staging lane temp rose back up over 200.
I have ET Streets but decided to leave the Nittos on just to see what I could do with them. Bad choice. I'm running 275/60's so I thought maybe I'd get some bite.
I'm running 100 octane with a 100 octane chip from Turbotweak I just got last week. Timing is 23* and 21* in 3rd. Running about 20lbs of boost at high fuel pressure (48psi) due to leaning out in 3rd with small injectors. Stock turbo, stock intercooler with dutt neck and stock replacement 30lb green stripe injectors.
I did 3 total runs. First run I left with 5psi and spun about 20ft before letting off enough to get traction. Second run I left with no boost but loaded up enough so I was just about building boost. Still spun and had to let off a little. Finally on the third run I left with only a little throttle and only spun a little. Best run was 13.02 at 104mph with a 2.01 60ft.
Looking at my Turbolink data afterwards, my O2 readings were good even with the high fuel pressure. Still leaning out at the end of the run to lower 700's, but not too bad. Didn't see any knock in any of the runs on my knock gauge or Turbolink.
Most of the people I talked to said they were down about .4sec and 4mph from normal due to the very hot conditions. My temp gauge said I was up to 210 degrees after staging and Turbolink agreed with 205-215 readings during the run. Intake temp was around 140 dropping to about 105 by the end of the run. Can you say heat saturation?
Full run data as follows:
R/T 0.242
60' 2.01
330 5.44
1/8 8.33 85.6mph
1/4 13.02 104.0mph
I only gained 18mph in the 1/8 to 1/4. Top end was crap due to the heat. No knock though. Probably could have turned up the boost a little more but I was scared of seeing knock in 3rd.
Considering all this, I'd say I'm pretty much where I should be. Not bad that I can almost touch 12's on my street setup with stock everything in the worst conditions at 20 lbs boost. I figure at 22 lbs boost in cool conditions I could maybe touch 12.5/12.6's on the Nittos and low 12's on slicks and some 1.6/1.7 60' times. It will take race gas and a race chip to touch 11's, but I don't know if I'll risk it with the small injectors. Most of my tuning has been on cool nights around high 60's/low70's. Heat made a huge difference and I doubt I'll go again on such a hot day.
Car hasn't been running the coolest lately and I'm waiting on dual ramcharger fans and some RMI 125. I think it was around 92 degrees outside on my ride to the track. My temp readings went up over 200 to around 205 or so, without even stomping on it. I figured maybe I'd get some cool down time to help, but I wanted to put a run in fairly quick. Once I started up and waited in the staging lane temp rose back up over 200.
I have ET Streets but decided to leave the Nittos on just to see what I could do with them. Bad choice. I'm running 275/60's so I thought maybe I'd get some bite.
I'm running 100 octane with a 100 octane chip from Turbotweak I just got last week. Timing is 23* and 21* in 3rd. Running about 20lbs of boost at high fuel pressure (48psi) due to leaning out in 3rd with small injectors. Stock turbo, stock intercooler with dutt neck and stock replacement 30lb green stripe injectors.
I did 3 total runs. First run I left with 5psi and spun about 20ft before letting off enough to get traction. Second run I left with no boost but loaded up enough so I was just about building boost. Still spun and had to let off a little. Finally on the third run I left with only a little throttle and only spun a little. Best run was 13.02 at 104mph with a 2.01 60ft.
Looking at my Turbolink data afterwards, my O2 readings were good even with the high fuel pressure. Still leaning out at the end of the run to lower 700's, but not too bad. Didn't see any knock in any of the runs on my knock gauge or Turbolink.
Most of the people I talked to said they were down about .4sec and 4mph from normal due to the very hot conditions. My temp gauge said I was up to 210 degrees after staging and Turbolink agreed with 205-215 readings during the run. Intake temp was around 140 dropping to about 105 by the end of the run. Can you say heat saturation?
Full run data as follows:
R/T 0.242
60' 2.01
330 5.44
1/8 8.33 85.6mph
1/4 13.02 104.0mph
I only gained 18mph in the 1/8 to 1/4. Top end was crap due to the heat. No knock though. Probably could have turned up the boost a little more but I was scared of seeing knock in 3rd.
Considering all this, I'd say I'm pretty much where I should be. Not bad that I can almost touch 12's on my street setup with stock everything in the worst conditions at 20 lbs boost. I figure at 22 lbs boost in cool conditions I could maybe touch 12.5/12.6's on the Nittos and low 12's on slicks and some 1.6/1.7 60' times. It will take race gas and a race chip to touch 11's, but I don't know if I'll risk it with the small injectors. Most of my tuning has been on cool nights around high 60's/low70's. Heat made a huge difference and I doubt I'll go again on such a hot day.