Quote:
Originally Posted by Bhobbs
Rumor is the ATS-V will get a 3.2L TTV6 making close to 500 HP.
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I saw that rumor as well. Not sure I believe it yet, but we'll see!
Quote:
Originally Posted by Outlaw77
I wonder what kind of turbo's GM is going to use. At 12 psi for a twin turbo set up there is a lot of room for tuning. Turbo'd engines respond extremely well to tuning.
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I found this and posted it in another thread, but it is pretty interesting as to the potential of this engine (similar to most modern turbo engines). Basically says there is plenty left on the table.
Quote:
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In dissecting the ECU programming, there are specific torque target tables, and the ECU is empowered to do many things to get to those levels, including throttle reduction, boost reduction and timing reduction. We saw the throttle drop close to 50% right after spoolup in some cases which is where the little drop off in torque comes from. But later runs showed less torque here as the ECU learned and was more predictive. This would be less prevalent on the road because the load on the dyno is somewhat higher especially at low rpms, causing the boost response to be more aggressive. The ECU is arguably the most complex spark ignition ECU that GM has ever used. Not only do we have target torque tables, but the torque models includes things like turbocharger compressor efficiency, predicted turbocharger turbine speeds, and many other variables. I can't wait to start tuning them as based upon the way ECU is limiting the output in stock form, this engine will easily pump out 500+ lbs-ft of torque and 460-480 hp with minimal mods/tuning and should come close to matching the old CTS-V acceleration wise when doing so (I own a 2010 CTS-V 6MT myself). And as JK said, what does this tell us about the next CTS-V? Can't wait.
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