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Seizure said:
Compressor map? Uh? What's one of those? The ECU controls fueling and timing based on a trigger point and a load sensor (throttle position/potentiometer). The turbo merely runs off the exhaust gasses produced by the engine. The design of the impellor is the factor that controls when the turbo is spinning fast enough to create positive pressure, i.e. boost. In this case the bigger turbo requires a higher rate of gas flow to get it spinning, hence why you don't notice the boost until higher in the rev range. The ECU however could control when the waste gate opens and closes dictating the maximum boost the turbo produces. Is this what you were on about?
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Compressor map - brief explanation
here
Yes an ECU does control ignition and fuelling, besides boost control. There is more to the compressor map than impellar design, but its part of it.
Throttle position is not the best way to map a turbo car.
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Seizure said:
But you don't need to replace the internals unless your pushing 400bhp ish. This was just to make the 1.8T guys on the forum aware that they too could have a 360 380bhp output without a massive engine out and rebuild job. In fact JabbaSport have an A3 1.8T Quattro of their own ready to go under the knife.
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I stand corrected then, Im surpised the internals can take 350bhp/350lb/ft the rods in particular are very small.
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Seizure said:
I think that would be a good idea. Or you could just ring them on: 01733 211779. I just have and everything I've written above, they confirmed. /ubbthreads/images/graemlins/grin.gif
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I already emailed them, asking if they'd like to give us the low down on their conversions. /ubbthreads/images/graemlins/smile.gif
I'm even more intrigued now...