will headers help my 1993 Eagle Vision Tsi 3.5L - DodgeIntrepid.Net Forums - Dodge Intrepid, Concorde, 300m and Eagle Vision chat
 
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post #1 of 11 (permalink) Old 11-13-2003, 12:01 AM Thread Starter
 
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will headers help my 1993 Eagle Vision Tsi 3.5L

Ive herd that there are headers for My Eagle Vision TSi 3.5l 24v if this is true where could i get them. And will they make a differance in performance for this car. Ive herd that headers sometimes dont really help that much so if anyone has info i would appreciate it.
Thanks
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post #2 of 11 (permalink) Old 11-13-2003, 12:13 AM
 
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I am unaware of any headers. But if there were some, they would help.
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post #3 of 11 (permalink) Old 11-13-2003, 05:27 AM
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i saw a pic a while back of a company offering to make them at the high price of 500 bucks.
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post #4 of 11 (permalink) Old 11-13-2003, 07:16 AM
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That is definitely a high price. But if I could get them, I think that I would.

-Duncan
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post #5 of 11 (permalink) Old 11-13-2003, 08:08 AM
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there are 2 different companys that are in the research phase of a set of headers. if you look in the second gen section, or search for headers, there is a thread that is pretty current
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post #6 of 11 (permalink) Old 11-13-2003, 10:11 AM
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Quote:
Originally posted by Ravin
i saw a pic a while back of a company offering to make them at the high price of 500 bucks.
The price of a quality header will usually set you back 4 or 500.
94 and up Dodge Ram, any V8 race header ($99 headers for an 80 Z28 is not a race header), a Honda header is over $300 for just one.

I'm not saying $500 headers for a 3.5L is a quality header, in fact I've never even seen them. Just saying I think the price is expected.

A header will significantly improve the breathing of a 3.5L and you will need to add fuel to the air/fuel mixture to take full advantage of extra breathing.

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post #7 of 11 (permalink) Old 11-13-2003, 10:41 AM
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Quote:
Originally posted by jfsram
A header will significantly improve the breathing of a 3.5L and you will need to add fuel to the air/fuel mixture to take full advantage of extra breathing.
The PCM won't adjust to the free(er) flowing exhaust?

So ideally, we should increase air flow to the engine (at the intake) and we should increase the air flow out of the engine (but still provide back pressure)

A CAI will help the intake.
Headers and 2-7/8" pipes for the exhaust and high flow cats? I don't like messing around with my emissions too much because of strict laws.... Am I making the right assumptions? What else can be done.

Hardwarz
PS. I watched Monster Garage, Jessie Jame weldeds his own headers... I can do it too! (anyone want to show me how to use a Mig welder?) hehehe
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post #8 of 11 (permalink) Old 11-13-2003, 12:41 PM
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Here's ACR's custom one-off headers. He's running 13's now i believe. DO you really wanna put this kinda money into the car now though, don't you have like 190,000?






Here's his high-flow cats

Last edited by LOUD98ES; 11-13-2003 at 12:43 PM.
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post #9 of 11 (permalink) Old 11-13-2003, 12:56 PM
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The Chrysler PCM is limited on how much it can adjust for.
It gets it's mixture parameters from tables. In very simplified terms it gets mixture from fixed parameters. On a given throttle angle, rpm and minor data from O2, map sensors etc will supply the mixture written. This is call speed/density. Speed/density assumes a given amount of air is entering the engine according to throttle position.
Mustang guru's understand this and that's why when they start modifying 5.0L they will start with a Mass Air Metered car. If it's a speed/density car they will convert to a Mass Air car.
A Mass Air car actually measures the air entering an engine, not assume from a given throttle angle.

I'm not saying one system is better than the other, just stating the differences, they both have their advantages.

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post #10 of 11 (permalink) Old 11-13-2003, 05:27 PM
 
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Quote:
Originally posted by jfsram
I'm not saying one system is better than the other, just stating the differences, they both have their advantages.
I bet one difference is cost. I've seen prices for mass air sensors, I forget the exact prices, but they are not cheap at all. It is probably very cheap just to assume air flow from a sensor that is basically a varible resister, then let the computer programming take care of the rest.
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post #11 of 11 (permalink) Old 11-13-2003, 08:41 PM
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Cost and reliability.
A speed/density system will recognize a gross difference and continue to provide somewhat of a correct mixture.
The Mass Air system can respond to upgrades since it doesn't care what it's supposed to see, it cares about what it is actually sensing.
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