Quote:
Originally Posted by cotbu
I was told they are not marketing the gtx2867 turbo as an upgrade from the gt2871r 56 trim. The gtx3071r is an upgrade from the gt3071r.
And I would retune if the graph looked like that on an sr20. Looks good for drifting though.
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Did you read through any more of the thread? That was on 87 octane (not sure why that's all he had access to...) and with a restrictive intake/exhaust. Fix those problems and the torque won't fall off like that. There's no reason this turbo should tail off up top with only the 22psi or so he was running on it. Assuming this has a similar compressor map to the 7064, I wouldn't expect it to start tailing off until 25psi or so on a 2.3L and even higher on our 2.0L. That's assuming a 7k redline; take it to 8-9k and I'm sure you'll see it fall a bit.
And why is the GTX2867 not an upgrade vs the GT2871? It flows 4lbs more and with a 4mm smaller compressor which means better response.