Does throttle body size matter on a boosted application?
Thread Starter
Launching!
Joined: Feb 2008
Posts: 235
Likes: 1
Does throttle body size matter on a boosted application? For instance on my ysi blown 383, would it make a difference between a 58mm and a monoblade? One flows 1100 cfm and the other flows 1300 cfm I believe.
Obviously, I'd probably upgrate to a victor efi and lsx throttle body if I were serious about switching but I'm curious what you guys think. My car isn't a max effort type deal; more of a fast street car with some mile racing down the road.
Obviously, I'd probably upgrate to a victor efi and lsx throttle body if I were serious about switching but I'm curious what you guys think. My car isn't a max effort type deal; more of a fast street car with some mile racing down the road.
For instance on my ysi blown 383, would it make a difference between a 58mm and a monoblade? One flows 1100 cfm and the other flows 1300 cfm I believe.
Obviously, I'd probably upgrate to a victor efi and lsx throttle body if I were serious about switching but I'm curious what you guys think. My car isn't a max effort type deal; more of a fast street car with some mile racing down the road.
Obviously, I'd probably upgrate to a victor efi and lsx throttle body if I were serious about switching but I'm curious what you guys think. My car isn't a max effort type deal; more of a fast street car with some mile racing down the road.
The answer is that it MIGHT, and MIGHT NOT. How much boost, how much flow etc. If it were a turbo application and it was boost dependent it would matter which side of the blades you were taking the boost from. If you are taking it on the manifold side I'd say it probably doesn't matter much (other than small friction loss) since you're taking the reading after all the loses have occurred.
Compare your comp outlet pressure to what your MAP is telling you. If its bad, well there you go.
Honestly, spin it harder. Thats cheaper and easier than a single plane, elbow, +90mm TB etc.
Honestly, spin it harder. Thats cheaper and easier than a single plane, elbow, +90mm TB etc.
TECH Enthusiast
Joined: Oct 2011
Posts: 556
Likes: 0
From: Apopka FL
It's going to depend on the application. But yes there's some power there. How much will depend on a the combination. I am in the process of switching from a lt4/58mm setup to a single plane with a 104mm.
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This seems to be the consensus. I ran a monoblade on a 550ish FWHP car and had fun getting the thing to idle right. I did get it down just wasn't fun. No telling if it was worth anything extra over a 58mm. AI has said theyve made 5-10 hp more on some stout setups, but they've also made no gains with a monoblade on similar builds. IMO not worth the hassle but if you're patient and have a really good tuner and you're digging for every last horsepower then maybe give it a shot. Resale on monoblades is usually pretty good though if you decide it's too much trouble.
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