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<blockquote data-quote="tt335ci03cobra" data-source="post: 15704342" data-attributes="member: 68944"><p>Nightmare, I don't think youll need that much manifold for 1300. I'm on a stock Ecu with a very rich fuel ratio. It's like 10.75/1 and just 28psi. I'm low compression as well at 9.3/1. I'll crack 1300-1350 just going Holley efi, 8250rpm and 30psi (I'm pretty sure anyways. It's at 1208 as it sits).</p><p></p><p>Another way to look at it is if you get 1300-1400 from an fr500c setup, it'll be very flat from 6200-8200rpm. That's the entire rev range for given gears when shifting at redline. It'd probably be faster than something that peaks at 1300-1400 at 8000rpm but is making let's say 1150-1200whp at 6500-7000rpm and climbing. Average power and what not being the deciding factor. Before you sell that manifold, have you already tried it on the car? What's it made so far? From the results I've had with a mild fr500c, I can't see how a wickedly worked over one couldn't support 1500whp with higher compression, stand alone Ecu/fuel system, and 67's.</p><p></p><p>Anyways good luck on the project man, it definitely sounds like you have a good plan in mind so it should run great. What is your build using as in displacement, compression, head, cams and turbo size?</p><p></p><p>Not trying to sound like a know it all, I've just seen good results with the fr500c so far even in as constructed/large plume form. I was actually still gaining at 7200rpm but my n2mb wotbox was signaling a spark cut off at 7200, we didn't realize it until after the pulls. That graph looks wonky accordingly.</p></blockquote><p></p>
[QUOTE="tt335ci03cobra, post: 15704342, member: 68944"] Nightmare, I don't think youll need that much manifold for 1300. I'm on a stock Ecu with a very rich fuel ratio. It's like 10.75/1 and just 28psi. I'm low compression as well at 9.3/1. I'll crack 1300-1350 just going Holley efi, 8250rpm and 30psi (I'm pretty sure anyways. It's at 1208 as it sits). Another way to look at it is if you get 1300-1400 from an fr500c setup, it'll be very flat from 6200-8200rpm. That's the entire rev range for given gears when shifting at redline. It'd probably be faster than something that peaks at 1300-1400 at 8000rpm but is making let's say 1150-1200whp at 6500-7000rpm and climbing. Average power and what not being the deciding factor. Before you sell that manifold, have you already tried it on the car? What's it made so far? From the results I've had with a mild fr500c, I can't see how a wickedly worked over one couldn't support 1500whp with higher compression, stand alone Ecu/fuel system, and 67's. Anyways good luck on the project man, it definitely sounds like you have a good plan in mind so it should run great. What is your build using as in displacement, compression, head, cams and turbo size? Not trying to sound like a know it all, I've just seen good results with the fr500c so far even in as constructed/large plume form. I was actually still gaining at 7200rpm but my n2mb wotbox was signaling a spark cut off at 7200, we didn't realize it until after the pulls. That graph looks wonky accordingly. [/QUOTE]
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