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| Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
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11-24-2015, 03:47 AM
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#29 |
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Ported a stock tb to 68mm. It works. Nothing crazy by its self but it does work. Also its not twitchy and no cel. This along with my other mods i made 221whp on e85
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01-31-2018, 12:03 AM
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#30 | |
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Quote:
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01-31-2018, 02:44 PM
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#31 |
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Won't make a shit bit of difference. The idea is to flow air, not reflect light.
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04-18-2018, 04:22 PM
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#32 | |
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Apart from the above, stock throttle body is ~64.5-65mm. You can go up to 67-68mm without issues. Mine is 67mm. It looks that maxbore.com is a good manufacturer in US. Check a member's tb that was build there: http://www.ft86club.com/forums/showp...95&postcount=1 Unfortunately, the specific tb is already sold. |
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04-18-2018, 10:18 PM
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#33 |
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I've posted this before, but the grams throttle body worked for me. On a stock tune, improved throttle response significantly. No I don't have dyno sheets to prove it, or the numbers to claim it made more ponies. But the response is definitely noticeable.
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Harrop Supercharger | Delicious Tuning Flex Fuel Kit | ACE Type-A 350 Header + OP | CSG Touring 86 Catback | RacerX Fabrication Catch Can | Jackson Racing Dual Radiator/Oil Cooler | Tuned by Zach from CSG
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04-19-2018, 01:46 AM
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#34 |
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The grams tb is not using a taper opening to create a venturi effect which helps move air through faster. There was somewhere a before and after dyno showing that there aren't actual gains, but I'm sure that it has the best response among all the throttle bodies.
On tapered throttle bodies there is a single dyno showing on high rpms a 6whp increase, but it is a vendor's dyno and no one believes it. Fact is that when I installed my aftermarket tune, I logged the car and the tuner had to remove a bit of timing in that particular range. Additionally, we saw that the ECU was adding fuel in same range meaning that there was more air than stock. So, it looks that the tb had an effect and that it was working. The whole idea is to have more air and more fuel and thus more power. Last edited by nikitopo; 04-19-2018 at 02:13 AM. |
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