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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
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04-25-2012, 05:48 PM | #43 |
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can someone englarge the pictures about the exhaust
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04-25-2012, 09:43 PM | #44 |
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Realistically, you don't gain much horsepower with a tune. But you gain lot of torque. Tuning makes the power band more linear. So the response on the low end will much quicker.
Personally intake or exhaust won't get much out of this car. 10 whp at tops. Again those are top-end power. You will probably loose some torque at the low end with just I/E. so tuning is a must if you are looking for "true" gain
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04-25-2012, 11:46 PM | #45 | |
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04-26-2012, 01:22 AM | #46 |
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04-26-2012, 06:57 PM | #47 | |
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You're getting better delivery, smoother power out of a tune most likely, and maybe a couple top end horses at best. This is the inherent problem with high-comp, small displacement NA engines, and how they limit you. |
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04-27-2012, 02:08 AM | #48 |
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id like to think this motor is comparable to a sr20 have similar dimensions, bore, stroke and displacement. those can rev freely up too 9 or 10k with valvetrain
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04-27-2012, 06:23 AM | #49 |
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The closest you can get to this engine is with the K20 and the Clio RS engine.
These can gain quite some hp with the right tune, with not much torque loss, so I'm going to be optimistic and say thate with the right full exhaust system and the best ECU we're going to see 15 hp of power increase. With cams and intake even 30, so 220-230 flywheel hp and at least 10 nm of torque in the midrange, with peaks of 20, are feasible. |
04-27-2012, 04:21 PM | #50 |
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I/H/E + Tune : No greater than 20whp/20wtq gain, but, realistically, more than +8/+8 The real key, I think, is going to be switching to a more efficient IM.
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04-27-2012, 05:10 PM | #51 |
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With a relatively low redline and without variable valve lift, I don't think this engine will see major gains with just I/E/tune. But who knows, Subaru mentioned the engine easily hit its target output on its initial shake-down dyno run, so perhaps there is some untapped potential there.
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04-27-2012, 05:31 PM | #52 | |
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My proposed solution: a true performance oriented mild hybrid system to boost low end torque so it feels like a 2.4L everywhere |
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05-01-2012, 03:56 AM | #53 |
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I know when I saw the TRD version of the FRS at the Toyota museum. I ask the lady which is the head of TRD USA, what are the HP number on the intake is 9hp and the exhaust is 4hp. I do not know if each gain is the part alone or compounded each other though. But there are numbers to be gain if her statement is which is probably true.
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05-01-2012, 09:20 AM | #54 |
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i believe this motor has variable valve timing
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05-01-2012, 09:27 AM | #55 |
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05-03-2012, 09:43 PM | #56 |
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I'm gonna leave it alone. OEM Bone Stock. The most I'd do is roll around 17 inch rims with some sticky tires in the summer, that's about it. And put snow tires on the stock rims for the winter since I do live in the mountains, god snow driving in this car is going to be interesting, if even feasable? (nothing like driving an impreza in a blizzard) :o
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