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Always Furious. Now Fast.
447 Posts
Discussion Starter #1
I had some problems keeping my A/F mixture correct at the dyno. Here is the graph:


It pulls hard, but lean to around 4k, then the boost falls off (19 down to 15) and the engine stumbles a bit. I have been focusing mainly on my fuel computer/additional injectors as the culprit, but then I got to thinking about the chicken and the egg:

Is the bad A/F the cause of the loss of power or is the loss of power/ability to flow at 4k rpm causing the bad A/F ratio. Is this what a dyno pull might look like if I was reaching the flow max of a turbo

BTW - I have a T04E with a .69 compressor side. I think it is supposed to be a 500 hp turbo.
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