2.25" or 2.5" exhaust - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
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post #1 of 5 (permalink) Old 06-10-03, 05:02 AM Thread Starter
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2.25" or 2.5" exhaust

Just wondering - what would be better for a stock 3.9L engine:

A mandrel bent 2.25" exhaust
A press bent 2.5" exhaust?

Both with single straight thru muffler.

I reckon the 2.25" would be a bit quiter and have much better gas velocity than the larger one but i'm not sure.. Probably would drone as much either - maybe..


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post #2 of 5 (permalink) Old 06-10-03, 05:13 AM
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If it was me I would go for mandrel bent 2.5" with 2 mufflers,1 large one in the centre and a small hot dog style on the rear.With exhausts its all about personel preferance.talk to an exhaust place,then get a second opinion.

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post #3 of 5 (permalink) Old 06-11-03, 03:22 AM
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If I remember correctly, it only turns out about $50 more for a mandrel bent 2.5 then a press bent...
I'd go the 2.5.

Shop around!

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post #4 of 5 (permalink) Old 06-11-03, 04:45 AM
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If it was me... I'd get a 2.5" Mandrel bent with 1 straight through muffler which the exhaust guy says is defect ready for $250, only to find out it's not loud enough cos I haven't got extractors or a decent cat...
post #5 of 5 (permalink) Old 06-11-03, 07:58 PM
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any exhaust place worth thier money will be albe to supply a pre-fab 2.5" mandrel bent exhaust with your choice of 1 or 2 mufflers. I had a mercury system on my eb 4.0, but there are a few different companies that make them. Took me 45mins to bolt in myself.

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