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[quote][i]Algselt postitas: Jürarrak[/i] Leidsin sellise testi TB kohta, küll 1,8T baasil: Quote, originally posted by Unitronic 1.8T Engine Spec » * Stock AWP "Small port" 1.8T Engine * Panchi 144/19mm drop in connecting rods * SEM Motorsport small port intake manifold + 80 x 80 throttle body plate * Custom tubular v-band manifold * GT3071R w/ TiAL v-band 0.63 A/R turbine housing * TiAL 38mm MVS wastegate * Unitronic Chipped BT 18deg file All throttle bodies were tested doing 2 pulls at 1 bar and 1.5 bar respectively. 1 bar being wastegate pressure of 14.7psi (was actually 17psi due to the SEM manifold) and 1.5bar being controlled with a greddy unit (22psi).Below is a recording of peak power made in each dyno run using the SEM small port manifold & the respective throttle body. For reference we have included what the same engine made utilizing a stock AWP manifold and throttle body. For this test the following nomenclature represents each throttle body. 80mm = Dodge Hemi 5.7L 75mm = Audi B5 RS4 2.7L - TT 70mm = Mercedes-Benz C320 – 3.2L 65mm = Audi B5 S4 – 2.7L / VW Golf & Jetta 2.8 24V VR6 60mm = Volkswagen Passat B5 1.8T Cross Section Area’s of the throttle plates / Percentage increase % over stock 60mm unit 80mm = 5026 mm2 / +77.7% 75mm = 4417 mm2 / +56.3% 70mm = 3848 mm2 / +36.1% 65mm = 3318 mm2 / +17.4% 60mm = 2827 mm2 / +0% TESTS: HORSEPOWER / correctedhp BOOST : Wastegate pressure - 17PSI 80mm: = 388.9 hp @ 7300 rpm 75mm: = 390 hp @ ? 70mm: = 383 hp @ 7200 rpm 65mm: = 378 hp @ 6500 rpm 60mm: = 374 hp @ 6700 rpm BOOST - 22SI 80mm: = 451 @ 6700 rpm 75mm: = 447 hp @ ? 70mm: = 447 hp @ 6700 rpm 65mm: = 430 hp @ 6800 rpm 60mm: = 439 hp @ 6800 rpm STOCK AWP Manifold + 60mm: = 421 hp @ 7100 rpm TORQUE / lb-ft BOOST : Wastegate pressure - 17PSI 80mm: = 322 lb-ft @ 5600 rpm 75mm: = 333 lb-ft @ ? 70mm: = 318 lb-ft @ 5600 rpm 65mm: = 320 lb-ft @ 5800 rpm 60mm: = 312 lb-ft @ 5700 rpm BOOST - 22SI 80mm: = 380 lb-ft @ 5500 rpm 75mm: = 382 lb-ft @ ? 70mm: = 374 lb-ft @ 5600 rpm 65mm: = 369 lb-ft @ 5600 rpm 60mm: = 371 lb-ft @ 5600 rpm STOCK AWP Manifold + 60mm: = 365 lb-ft @ 5100 rpm With this being a GT3071, I'd say that the 17 PSI would be close to what a GT2860 flows at full tilt. If we look at the difference between them it doesn't strike me as amazing 60mm to 65mm 4 CHP 60mm to 70mm 9 CHP 60mm to 75mm 16 CHP The 75mm TB may be somewhat useful, however you have to bear this in mind as per Issam: CONCLUSIONS: 1. If you are running a turbocharger rated for 450hp or more , then it is highly recommended to have a throttle body greater than 65mm.We expected the results to be amplified had the motor been built with a larger ported cylinder head (AEB/AJL/ADR). 2. For 99.99% of the 1.8T users, a 70mm / 75mm DBW throttle body will more than suite your needs. 3. If you are a user with a home brew or custom intake manifold with a larger plenum and you are running a stock 60mm throttle body then you are actually hurting performance rather than helping and it is recommended you get an upgrade. Same applies for users running an SEM motorsport intake manifold and a 60mm OEM throttle body. 4. Throttle body adaptations can only get you so far. Every single one of these throttle bodies needed the map to be tweaked. In no situation was it a simple “plug and go” . Some might get away with lemiwinks whereas others will have to look into an entire motronic retune. Ja algallikas: [url=http://forums.vwvortex.com/showthread.php?4690902]http://forums.vwvortex.com/showthread.php?4690902[/url] [/quote]
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Eesti Audi Klubi foorum
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S - Audid
»
20vT - tuuning
»
Sisselase (cooler, kollektor..)
» Vasta
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