Straight pipes

6.9poweredscout

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I know your in Ky but you need to remember that if it is not turboed there are laws against straight pipes. I know that in my county the jp court will hit you for about $700.00 in fines for the non turbo straight pipe. not saying i wouldnt do it but I also have a badge that gets me a little professional courtsey

weird, here in PA there's no laws on emissions or exhaust if it's diesel.....;Sweet

-Jon
 

tkremer

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I am very new with diesels my dad gave me his 88 f250 4x4, cause he went out and bought a 05 powerstroke..just wondering what exactly what IDI and N/A means? I dont think mine is turbo, can it be made a turbo?
 

FordGuy100

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I am very new with diesels my dad gave me his 88 f250 4x4, cause he went out and bought a 05 powerstroke..just wondering what exactly what IDI and N/A means? I dont think mine is turbo, can it be made a turbo?

IDI stands for In-direct injection. Basically there are two types of ways to inject a diesel with fuel, either in-direct or direct. In a direct injection diesel, like powerstrokes and Duramaxs, a fuel injector sprays the fuel right on top of the piston. In a in-direct injected diesel, like our IDI's, diesel fuel is injected into a pre-chamber in the head, and then the burning fuel goes down into the combustion chamber. Somewhere on here there is a picture of a head chopped in half (thanks to Typ4) and shows the prechamber and everything.

N/A means Naturally Aspirated, or no turbo/supercharger. You can buy turbo kits for our IDI's, or if your lucky you can buy a factory turbo IDI (offered in 93-94.5 model years).

Here in Oregon it doesnt matter if its straight piped or not, it just has to pass a dB test, or thats what I've been told. I know in some small towns in the Cascades, there will be a sign saying no straight piped equiped vehicle engine braking or you will be fined.
 

Agnem

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I am very new with diesels my dad gave me his 88 f250 4x4, cause he went out and bought a 05 powerstroke..just wondering what exactly what IDI and N/A means? I dont think mine is turbo, can it be made a turbo?

We've got some great Frequently Asked Questions (FAQ) listed at the top of this forum and a lot of great how to's in our tech articles section. Give them a look over for a fast education. ;Sweet
 

Cat_Rebel

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Wouldn't you like to know
Yes a straight piped IDI sounds just like a chevy 350 with open headers. I have a 2.5" to 3.5" adapter up by the tranny then I used to have it dump off to the side right (almost) under the cab. VERY loud when you drove next to another car or building. Now I have 3.5" going up to 5" stacks, still very loud & rattles things but I love it! Never been pulled over & I'm in town alot.
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