Diagnose my 1/4 mile slips please
#31
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I'm still lift shifting. Once Tom pointed out it was falling out of boost and I saw the log I started to lift less and it started to hold boost better. He then modified the map for between shift loads with timing and fuel to further help retain boost and as a result ET's improved. I don't slam into the next gear, I just flip the shifter into it.
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Last edited by Indy Evo; Sep 2, 2009 at 12:14 PM.
#32
Update as promised:
Went to the track today again. With the new tune the best I did was 13.0 @ 107 mph 1.7 60'. The rest were mostly 13.1=13.3 @ 105's 106's . So I am basically slower with my current 11's a/f ratio compared to my previous track day with a/f in the 9's running 12.7 @ 109 's . I came home and did a boost leak check and everything was fine.
Now if I need a driver mod, then shouldnt I be at very minimum same speed/time as before and not slower with this more optimum tune? I'm seriously confused now.
I really dont want to waste more money on this but I guess I have no choice now but to bust out the credit card again. I'm going to do the following:
1. Compression test (borrow friends tester)
2. Dyno my car at AMS
I think after I dyno, I will know for sure if its the car or me.
Went to the track today again. With the new tune the best I did was 13.0 @ 107 mph 1.7 60'. The rest were mostly 13.1=13.3 @ 105's 106's . So I am basically slower with my current 11's a/f ratio compared to my previous track day with a/f in the 9's running 12.7 @ 109 's . I came home and did a boost leak check and everything was fine.
Now if I need a driver mod, then shouldnt I be at very minimum same speed/time as before and not slower with this more optimum tune? I'm seriously confused now.
I really dont want to waste more money on this but I guess I have no choice now but to bust out the credit card again. I'm going to do the following:
1. Compression test (borrow friends tester)
2. Dyno my car at AMS
I think after I dyno, I will know for sure if its the car or me.
#35
I was running a lot of low 13's testing out different rpms, and slow, fast, WOT shifting. I also missed 3rd gear a couple times when I was trying to shift so fast like it was dog gears.
My car was actually parked right next to the AMS trailer. I was helping my friend change the tires on his cobra then all of a sudden I see AMS pull up and park next to us.
#40
But best was 13.0 @ 107 only once. After that it never trapped that high, mostly 105-106 traps @ 13.1 13.2 13.3 etc.. even with WOT shifting. Then 60' started getting worse to 1.8's.
#42
Evolving Member
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to the op after watching from the side i say this only in a good way, you gotta work on driver mod, a tenth on your 60 and at least 2 to 3 on shifting and your probablly where you should be gl with car hope to see some of you guys real soon at the track and don't waste your on dyno just have someone look it over for you first
#45
to the op after watching from the side i say this only in a good way, you gotta work on driver mod, a tenth on your 60 and at least 2 to 3 on shifting and your probablly where you should be gl with car hope to see some of you guys real soon at the track and don't waste your on dyno just have someone look it over for you first
If I remember correctly did about 8-10 passes today.