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| Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
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#15 | |
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Senior Member
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![]() I LOVE THAT! To those of you who don't know what Ricer Math is, it is when someone has this kind of logic. "Dayum Dawg! I got like, 10hp wit ma new exhaust! I got 8hp with ma intake! I got like 10hp from ma phat-as-fuk headers! And ma dope-azz tune got me 20hp! My ride is now kickin 48hp more to dem wheelz yo!" If you or someone you love is using this logic, or speaking in this manner, please save a life and dial, 1-800-DUM-RICER and get the help you need! Scott
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#16 | |
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Spaceman
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I'd like to see a poll asking how many of us had a similar thought process when we were younger.
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#17 | |
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#18 |
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I did forget to mention the last sentence which would have been;
"...and now I'll run 9's!" Scott
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#19 | |
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Spun
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I am not sure I follow? Are you saying that mods added on at the same time make less power (the 'ricer' is over estimating)? More power (mods work well together and the 'ricer' is being too conservative? Or general claims about mods in general? My personal car picked up about 45 RWHP (this is with my dyno sheet compared against many stock LS1 engines) with my mods (headers back, intake, and tune) Is it dumb of me to say I gained 25 from the headers, 10 from the intake, and 10 from my tune? Seems like sound logic to me. Especially based on dynos that others have conducted. |
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#20 | |
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The basis behind "Ricer Math" is say, for example, a header installed on a stock car with not other mods gives 10hp. And then an intake gives 10hp gains on a car with no other mods. If you were to install both mods on the same stock car at the same time, that does not mean that you have just gained 20hp. It will likely be less, more like 15ish at best. The reason for this is because of the volumetric efficiency of the engine and how it is affected by different bolt-ons. Most of the variance is within the error-threshold of most dynos and moot point at that. For example, if you looked up the expected gains on the Nameless header, Perrin Header-back exhaust and Perrin Intake and simply added them together, that would not accurately reflect your end result if you installed all of them on a car. People who routinely build cars know this but there are many who don't. Usually the newbies/ricers/posers/(insert stereotype here) whatever you would like to call them. Its all in jest and not to offend anyone. Scott Scott
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#21 |
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Driveway labs.
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Here is my 2 cents on it.
Guys, we have a naturally aspirated 2.0L car that is pretty maxed out from the factory. Pick the exhaust that you enjoy the sound and visual appeal, because you aren't gonna notice the performance gains anywhere but a dyno. It's a different story if you go FI, but bolt ons without a tune or cams won't make much a difference. The Perrin exhaust is my favorite sounding exhaust.
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-'06 Mitsubishi Eclipse 3.8L, UV blue. (Mods: turbocharged, full suspension, too much to list) -'13 Town and Country Limited (Mods: too many kids) |
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#22 | |
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I'll agree, the rest of the exhaust doesn't matter too much, but I think your header choice will influence your power the most right in the most restrictive part of the exhaust, then a good OP/DP solution. |
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#23 |
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Driveway labs.
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Yeah but in comparison, headers are seeing what? 12whp max with supporting exhaust, 15-18 with a tune. Regardless what I've seen done, 190-195whp is it without going FI or changing the VE of the motor with cams, etc...
Not gonna be very noticeable when stock dyno is ~170
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#24 | |
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That Guy
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If you don't think you'd notice it, that's cool. But man, you don't need to be such a downer. |
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#25 |
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Driveway labs.
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Not trying to be a downer, merely backing my point of picking an exhaust based on looks and sound instead of "this one gains .82 more hp"
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-'13 Subaru BRZ Limited, SWP. (Mods: Driveway Labs full aero, MCA, etc)
-'06 Mitsubishi Eclipse 3.8L, UV blue. (Mods: turbocharged, full suspension, too much to list) -'13 Town and Country Limited (Mods: too many kids) |
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