Engine Good News For VVT-i Owners

Good News For VVT-i Owners

My Father and I, owners of Sanderson Marine (www.sandersonmarine.com) a high performance mercury outboard repair facility, have fine tuned a bored and polished throttle body with a cut down butterfly pin. I have been very happy with the results on my 04. If your interested in having yours done, we will do it with same-day turn around time. We ship using Fed Ex, UPS or USPS. I will pay return shipping charges(UPS Ground only) or that amount toward whatever shipping you perfer. There is a picture of mine on the second page on my cardomain site(listed below). The price will be $115 plus you pay shipping to our shop(Chester, Virginia 23836), let me know if your interested.

Later

that's a hella good price..

i got my done for $250.. which is what most shop cost

The reason our way is so much more cost efficient than everyone else, is that the factory butterfly is still used. By milling down the butterfly pin, flow area is increased as much if not more than an oversized butterfly, and all the other restricitons from the thottle body are removed, and lastly, the intake side of the TB is opened more and tappered all the way to the butterfly for a "Velocity Stack" effect.

if the butterfly is still the stock size... isnt that the main restriction?

got pics?

wuts the difference between a modified tb with larger butterfly and ur modified tb?

interested.

The butterfly its self is no restriciton at wide open throttle, but the large pin in our cars is. It creates an obstruction which limits the amount of air moving past it. A bigger butterfly allows more air to pass that obstruction, but the problem is still there. We mill down one side of the pin, which opens area, just like a bored throttle body would, and at wide open throttle, the air moving much more freely over the top of the butterfly actually creates more of a vaccume effect on the air on the underside of the butterfly, pulling it through quicker. Also, a straight bored TB with larger butterfly losses all tapering which makes air more denser. I have the picture up on my cardomain site on page 2. I have a larger version of that picture I can email you if your interested.