Walker BTM - Ford Powerstroke Diesel Forum
 
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post #1 of 4 Old 02-06-2010, 08:13 PM Thread Starter
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Walker BTM

I replaced the OEM muffler with the Walker BTM today and am happy with the result.

First off the truck does not get noisier as I expected.

Before the BTM installation, it goes 60 miles/hour at 2,000 to 2.100 rpm.
After BTM installation, it goes 60 miles/hour at only 1,800 rpm.

In couple of weeks I'd be able to tell if there is any improvement in mpg. For now I feel like it has a tad more power and seems to accelerate a little faster.

It costs $80 for the BTM and $100 for installation labor. I had it welded in instead of using clamps.
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post #2 of 4 Old 02-07-2010, 01:27 PM
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Doesn't make sense. You could get better gas mileage, but RPM,s shouldn't change for a given speed unless your tranny is slipping.

late 99' F350, Crew cab, SRW, 4guage pillar pod, combo driving/fog lights, 55w backup lights, drivers side battery isolation mod,6637 intake
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post #3 of 4 Old 02-07-2010, 01:30 PM
wriott
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i agree... RPM should not of changed one bit...
post #4 of 4 Old 02-07-2010, 02:15 PM Thread Starter
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I have no idea if it is logical or not. I noted the RPM drop during the 20 miles drive home from the shop after BTM installation.

I sure hope nothing is wrong with the trannie as you think.....That is one big ticket item to fix....
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