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Does anyone know the stock throttle body diameter. I have a throttle body that has been rebored by RC engineering. I just wanted to know how much bigger it is compared to stock.

I'm going to be upgrading my fuel lines to -6. Will the stock fuel filter be a restriction? I want to know if I can use the stock fuel filter or do I need to use an aftermarket one?

So here’s my long sad story. The saying goes people want three things when building a car 1. make it fast 2. make it reliable 3. do it cheap but you can only pick two. Well I chose option 1 and 2 knowing it would not be cheap. I bought the best stuff possible just to reach a small...

The goal is to have a reliable street car. My definition of a superstreet car is something that can be daily driven (though I probably won't drive it daily), runs on pump gas and no nitrous, and is environmentally friendly (the car should be able to pass emissions.) I like to breathe clean air...

So i'm considering buying a new turbo. I'm not sure what to get. I want at least 400rwhp but I don't want over 500rwhp. I want to acheive this hp goal on pump gas. I'm trying to be cheap but not so cheap that it will take away reliablity of the car. I have 550cc injectors, so i want to keep...

What do you guys think about this clutch? Pros? Cons? What is the difference between the 800hp and 1100hp capacity clutch? because they are the listed as the same price on titanmotorsports. Will the clutch start to slip after a couple launches at the track? Is there anyone with personal...

I am working on my senior design project, which is a simultaneous lug nut remover. I need a rough estimate of how much the parts would cost to make (labor, and material). The housing and cover could be aluminum. I would like the other 3 parts to be made of 1045 steel. :1zhelp:

why does a divorced downpipe give greater gain ? i know there will be less turbulence, but so what if there is less turbulence. a regular downpipe is a bigger hole which is less restrictive. The only way i see the divorce downpipe give greater gain if the pipe for the wastegate is not...

Does any one know how to calculate the horsepower on an impact gun/wrench? Or can anyone at least give me an average horesepower range of an impact gun? The manufacter only give the torque. Also the manufacter only give the free speed of the gun? What would the RPM speed of the impact gun be if...

I was thinking about getting a black FMIC. Does anyone have any pics of a black FMIC on a mk3? or can someone photoshop the intercooler color on a mk3 at least?

Lots of Questions. I did a search. Didn't find anything. What is the highest amount of boost that can be reached on the Lexus LS400 AFM? I am sure it also depends on the size of the turbo. So what is the largest size trim turbo that can be used and what is the maximum boost that can be...

can anyone post pics of their foglight air duct. i know there was a thread a while back on a group buy for a cf foglight air duct.

so Does anyone use any engine oil additives? has anyone actually seen any improves in performance or gas mileage by adding this. i was thinking about putting "engine restore and lubricant" in my car. i heard there were lawsuits against 50slick and duralube for not living up to what the products...