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2011-2014 Mustangs
Power-Adders
Roush TVS 79mm and 82mm pulley numbers?
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<blockquote data-quote="grnenvy" data-source="post: 12968426" data-attributes="member: 6920"><p>I have been on Justins dyno a couple times and the diff between the</p><p>82mm and 79mm was 5-8 rwhp. The tq was better around 10-15RWHP across the RPM with the stock air box and K/N.</p><p>The tq does hit faster with the smaller pulley. IMOP in the summer on the street I don't think the 79mm is worth the extra heat soak and possible timing retard required to run the smaller pulley. Also with 47s u could run into a problem if u get bad gas at the pump. </p><p>If your running a 79mm before going smaller u may want to install a better flowing intake system or do the trick I did with the factory air box. I think at a certain point u need to find the happy medium between blower heat soak and intake air flow. </p><p>I'm talking about a street car not a car that gets cool downs between runs.</p><p>Also if your going to run that smaller pulley I would recommand the upgraded injectors that VMP sells there awesome. No need for a voltage booster with the inj unless your pushing 650rwhp plus. </p><p>My car runs and idles perfect with the big inj.</p></blockquote><p></p>
[QUOTE="grnenvy, post: 12968426, member: 6920"] I have been on Justins dyno a couple times and the diff between the 82mm and 79mm was 5-8 rwhp. The tq was better around 10-15RWHP across the RPM with the stock air box and K/N. The tq does hit faster with the smaller pulley. IMOP in the summer on the street I don't think the 79mm is worth the extra heat soak and possible timing retard required to run the smaller pulley. Also with 47s u could run into a problem if u get bad gas at the pump. If your running a 79mm before going smaller u may want to install a better flowing intake system or do the trick I did with the factory air box. I think at a certain point u need to find the happy medium between blower heat soak and intake air flow. I'm talking about a street car not a car that gets cool downs between runs. Also if your going to run that smaller pulley I would recommand the upgraded injectors that VMP sells there awesome. No need for a voltage booster with the inj unless your pushing 650rwhp plus. My car runs and idles perfect with the big inj. [/QUOTE]
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Roush TVS 79mm and 82mm pulley numbers?
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