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The Terminator
Engine/Tuning
Whipple/pulley size HELP!!!
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<blockquote data-quote="whiplash306" data-source="post: 9248306" data-attributes="member: 33984"><p>Hey guys....I recently ordered a Whipple 2.3 gen II for my '04 Cobra. </p><p></p><p>Supporting mods include:</p><p>-AFCO heat exchanger</p><p>-TF I/C coolant reservoir</p><p>-EVENFLOW head cooling mod</p><p>-60 lb injectors</p><p>-JLT High Boost cai</p><p>-MAFia</p><p>-Ford GT pumps x 2</p><p>-SCT X3 Tuner</p><p>-Stage II FPDM</p><p>-BF 4 piece idler kit, and</p><p>-3" Bassani exhaust, with catted X-pipe all the way out past the stock manifolds/headers</p><p></p><p>Question is this. After speaking with Lethal, and in reading their pulley reference guide on their site ( <a href="http://www.lethalperformance.com/pulleys-idlers-supercharger-pulleys-upper-pulleys-whipple-c-16_1131_1548_1552_4374/whipple-03-04-cobra-supercharger-pulley-free-shipping-p-8279" target="_blank">Whipple 03-04 Cobra Supercharger Pulley **FREE SHIPPING** [WHIPPLE-PULLEY] : Lethal Performance, Performance parts for Ford Mustangs</a> ), I decided to get the 2.75" upper pulley and run a stock lower for a total boost production advertised at 19 lbs. After asking what gas I had available (93 octane), Whipple said that they have "plenty" of guys running around on 2.75" upper and stock lower combos with ZERO problems. However, after doing more and more reading on this site, it seems lots of guys are seeing higher than 19 lbs with this pulley. I'm not sure if those guys are basing that boost off their car's boost gauge or getting true boost levels while tuning, but it's got me a bit nervous. I'm a bit weary of spinning the blower too fast, thus creating too much heat and causing the engine to pull timing....which MIGHT yield lower hp/tq #'s than if I were to go with the smaller 3.00" upper pulley, stock lower and run more timing. </p><p></p><p>For the record, I have NO INTENTION of running anything other than 93 octane fuel. I wanna be able to pull up to the gas station, "fill 'er up" and drive away. </p><p></p><p>If anyone has any input or thoughts, I'd GREATLY appreciate it! Thanks</p></blockquote><p></p>
[QUOTE="whiplash306, post: 9248306, member: 33984"] Hey guys....I recently ordered a Whipple 2.3 gen II for my '04 Cobra. Supporting mods include: -AFCO heat exchanger -TF I/C coolant reservoir -EVENFLOW head cooling mod -60 lb injectors -JLT High Boost cai -MAFia -Ford GT pumps x 2 -SCT X3 Tuner -Stage II FPDM -BF 4 piece idler kit, and -3" Bassani exhaust, with catted X-pipe all the way out past the stock manifolds/headers Question is this. After speaking with Lethal, and in reading their pulley reference guide on their site ( [url=http://www.lethalperformance.com/pulleys-idlers-supercharger-pulleys-upper-pulleys-whipple-c-16_1131_1548_1552_4374/whipple-03-04-cobra-supercharger-pulley-free-shipping-p-8279]Whipple 03-04 Cobra Supercharger Pulley **FREE SHIPPING** [WHIPPLE-PULLEY] : Lethal Performance, Performance parts for Ford Mustangs[/url] ), I decided to get the 2.75" upper pulley and run a stock lower for a total boost production advertised at 19 lbs. After asking what gas I had available (93 octane), Whipple said that they have "plenty" of guys running around on 2.75" upper and stock lower combos with ZERO problems. However, after doing more and more reading on this site, it seems lots of guys are seeing higher than 19 lbs with this pulley. I'm not sure if those guys are basing that boost off their car's boost gauge or getting true boost levels while tuning, but it's got me a bit nervous. I'm a bit weary of spinning the blower too fast, thus creating too much heat and causing the engine to pull timing....which MIGHT yield lower hp/tq #'s than if I were to go with the smaller 3.00" upper pulley, stock lower and run more timing. For the record, I have NO INTENTION of running anything other than 93 octane fuel. I wanna be able to pull up to the gas station, "fill 'er up" and drive away. If anyone has any input or thoughts, I'd GREATLY appreciate it! Thanks [/QUOTE]
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