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DuncS3 said:
my REVO car showed 300 lb/ft on AMDs rollers running high boost 6, timing 4 (approx 1.5 bar ish), but obviously only showed this peak for about 1 second.
The same car on Interpros rollers running low boost 9 timing 5 did about 270 lb/ft (approx 1.3 bar)
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A torque peak is quite normal, then a fairly quick drop off.
The higher the boost you run, the sharper the drop off, and the peakier the torque curve - standard they have a flat torque curve.
I believe that 1.5 bar should = approx 285 genuine lb-ft.
...and 1.3 bar around 270 lb-ft.
Interpro seems spot on, in my view.
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These changes were made by the SPS3 and do make a difference on the road/track. Running the low boost 9 setting at bedford autodrome I couldnt keep up with chipped S2s down the straight, but change to high boost 6 and I could almost overtake.
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Basically, the things I have found are this:
Increase boost and you get more torque at peak torque....not always more top end power for various reasons (heat soak, bad intercooling, ECU protection coming in - pulling back the timing)
Increase ignition advance, and you get more top end power.
Mine shows more and more torque for big steps in boost...but no more than 3-5 BHP for being able to hold more boost to the fuel cut out.
Conversely, switching from Optimax to optimax maps (only the timing changed) drops the peak power by 5-10BHP...leading me to believe top end power comes from adding ignition advance.
Of course, do this on a car with bad ICs (standard) and you melt stuff!
My car used to run 78 degrees at the engine inlet (after the ICs) on the standard SMICs...changed to my twin IC set up with FMIC and I was getting 23 degrees.
This allowed me ti run more advance on the map, and prevent the ECU winding back the timing for protection - a win-win situatuion.
REVO cars always make superb power / torque if the owners crank the settings up...however, for me to be confident that I could run such extreme settings I did years worth of testing...and had some very efficient ICs. I would not feel comfortable running some of the possible REVO settings on an otherwise standard car. But that's just my view...