ok, heres is one of my dnyo sheets, i have a better one with higher numbers but cant find it so ill leave that at that, i read a post where the person was talkuing about its the curves that matter, if any of you can look at my sheet and give me your opinion and explanation on the curves i would appreciate it. also i have true duals and flow masters, c.a.i. intake and sct dyno tuned, what should i do next. I have about 208 to 209 at the wheel, i dont have that dyno sheet tp prove it at the moment, but i am currently working on making a new throtlle body tube replacement and getting some gears, so in the next few weeks when i go back to the dyno ill post the new sheet with hopefully better numbersthan i know i have at the moment .anyway i would like to get to about 230-240, is that posiible, and please suggestions on what to do next

 

opps, forgot to add sheet

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A/F ratio looks good. On an somewhat unrelated matter when you get gears the SCT tuner can correct the speedo.

 

Yes the A/F ratio looks good, but i would think you should try to go open loop a little sooner like around 2600rpms. and maybe try adding just a little more fuel from about 3300-5000rpms. It might not help much, but part of tuning is playing around to see what works out best with your combo. But it definately looks good and smooth.

 

yea the first run my air fuel ratio was so bad the tunning guy said from the factory it was almost dangerous, it took him 45 minutes just to get that right, 97 stallion, what do you mean go open loop a little bit sonner, and what would all of you suggest doing to get more hp out of the car

 

Those are some good numbers, pretty broad power band, Like the tq curve as well

 

Your air fuel ratio looks good except at around 2500 rpm, your running real lean but that may be normal. What did the company that dyno tested it for you think about the current a/f ratio?

 

open loop is when the computer see's a huge amount of air entering the engine and turns off the O2 sensors and runs off what the EEC has been programmed to do. Closed loop is when the O2 sensors have primary control over the engine telling the EEC what to do with the short and long term fuel trims. Here's a dyno from about a year ago. See at about 2500 rpms when my A/F ratio has that sudden drop. That's my EEC going into open loop, when you look at yours it starts to drop and then levels aff and drops again. This could be costing you some power.

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