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Pulled timing please help....

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DSMeclipse4G63

20+ Year Contributor
1,595
0
Mar 10, 2003
columbia, Maryland
Ok I logged my car a few weeks ago and was told that I had a boost leak, so I finally got around to fixing the leak and tested it. It is still low peak timing and I am still hitting fuel cut.

rpm/o2/timing/air flow

2304/.84/14/6.12
2596/.87/10/8.22
2912/1.00/10/10.96
3288/1.00/6/16.32
3748/1.00/5/19.05
4276/1.00/7/22.68
4828/1.01/8/26.27
5340/1.00/11/29.95<----already exceeded pre boost leake rpm and airflow
5868/1.00/13/32.80<---- hit fuel cut at 3.72lbs/min more airflow then pre boost leak
6203/1.00/30/9.10
4608/.62/26/5.28

Whe I nail the throttle the timing it retards to is a little higher then before, but peak timing is still the same 13 btdc. Airflow has increased since I fixed a boost leak, but my timing is still too low. I have my boost controller set at 14psi and it creeps to 16-17psi before hitting fuel cut. I have been told that 30-32 lbs/min are what the maf reads max before cut so I think Im doing alright there, but why is my timing so low? thanks for looking
Andrew
 
I've just started logging my car, but it looks like your way too rich. In your profile your fuel pressure is set at 57lbs. Is this still so? Also, what size injectors are you running?
 
turbolarry said:
I've just started logging my car, but it looks like your way too rich. In your profile your fuel pressure is set at 57lbs. Is this still so? Also, what size injectors are you running?

Yeah I have it set at 57lbs, and when a car goes wot it is supposed to be full rich. With 57psi and 450cc(stock) injectors it is like having 510 injectors, and being as though I have a b16g at 14-16psi I would think that would be a good amount of fuel. When Im driving the o2s fluctuate normal right around stoich(from lean to rich).The car pulls very very hard fior the low peak timing it has, but I know I can get more power from my setup. What Im thinking it is , is when the boost builds the timing being added gets slower, so Im thinking the intercooler is heat soaked or not cooling or Im getting knock.
Andrew
 
I just found my old log before with the leak, peak timing is up 3 degrees btdc. With my fuel psi set here my o2s are at .94-.98 max so thats pretty good for wot, the reason you see 1.00v is cause I forgot to hook my bov up for the log. Ill lower it to 50psi and log my wot o2s and see what kind of difference that makes.
Andrew
 
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