4" MBRP vs. muff delete - Ford Powerstroke Diesel Forum
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post #1 of 5 Old 07-06-2013, 10:38 AM Thread Starter
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4" MBRP vs. muff delete

What's the real difference in the EGT on a stock inj truck with php tunes. I know the 4" kit cools about 200 cooler than stock exhaust. I know this cause I put a 4" kit on my old mans truck. I want to know how it compares to a stock exhaust with a muff delete.
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post #2 of 5 Old 07-07-2013, 02:17 PM
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If I remember correctly a muffler delete gives 70% the benefit of having a 4 inch exhaust.

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post #3 of 5 Old 07-08-2013, 01:05 AM
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LOL...200* drop from an exhaust... LOL

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post #4 of 5 Old 07-08-2013, 04:58 AM Thread Starter
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^ what's so funny,I've seen it pulling the same load with stock and with a 4" and it really did drop 200.
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post #5 of 5 Old 07-08-2013, 08:20 AM
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Quote:
Originally Posted by goats View Post
^ what's so funny,I've seen it pulling the same load with stock and with a 4" and it really did drop 200.
I agree. I noticed it also. It seemed to be more of staying cool while pulling under a heavy load versus noticing it cooler while I was flooring it for fun.

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