- Joined
- Jan 26, 2017
- Threads
- 113
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- 1,575
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- 4,325
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- Export, PA
- Website
- prlmotorsports.com
- Vehicle(s)
- 2017 Civic Si, 2016 Civic EX-T, 2018 Type R
- Thread starter
- #106
Going off topic here a bit aren't we chaps....
We did not change the A/R, as this process is quite complex process. The P600 will utilize factory A/R, much like the R35 GT-R market drop-in turbo upgrades and most other drop-in turbo upgrades. The factory A/R will help keep turbo response/spool desirable for the masses and still allow 600 horsepower to be achievable for those looking to push this turbocharger to the limits. "Turbine design and efficiency is critical to overall turbocharger effectiveness as it relates to engine performance. " - Turbo, Rear World High-Performance Turbocharger Systems; Performance How-To By Jay K. Miller/Gale Banks Gale Banks speculates that proper turbine size/efficiency is more critical to engine performance than the Area over Radius. Our product development team and tuner has always supported Banks's speculation, which has never failed us. In the instance of excessive back-pressure and teetering on the edge of wheel efficiency/potential, we agree that increasing the wheel size (if possible) is more effective and efficient than increasing A/R when choosing between these two options. Keep in mind that the wheel specs of our P600 are rated to well into the 600's, roughly 650-660 at peak efficiency with a larger turbine housing. The 2.0L engine should allow the P600 to meet its 600 horsepower rating without having excessive backpressure issues, even with this "small" A/R turbine housing. Red Start Motoring already made 500+ horsepower without seeing diminishing returns with our smaller, less efficient prototype turbocharger, so we don't foresee 600 being an issue. As for the turbine outlet; it's huge (~3.75"), so this is most definitely not an issue.Let’s stop talking hondata fuel stuff ask your tuner cause if you don’t understand what’s actually being changed in the software you shouldn’t be touching it.
I want to know if prl changed the Area over Radius. of the turbo or known as the A/R. They estimate 600 hp but if it has really small AR of .42 like the stock turbo is goIng to lose some in higher rpm regardless of wheel size. The specs are similar too the garret but garret use a ..72 AR on the kits and the efr7163 turbo uses a .85. Also even the smallest AR on garret available is .49. Yeah p600 will spool earlier than any aftermarket full kit no doubt about that. I’m not saying it won’t make up to 600 hp but it’s going to require more boost higher rpm. I also wonder how having the stock turbo outlet will effect it. I hope the increased the AR. At least a little bit.
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