Quote:
Originally Posted by JJR
I just put 4" exhaust on my truck this spring and pull a 10,000lb 5ver. It seems like the truck has less torque than it did pulling last year with the stock exhaust. Is it me or has anyone else noticed this? The truck makes more boost than it did before but just doesn't seem to have the lugging power it did before. There are no codes and the truck runs great. Could the difference be the new ULSD fuel?
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The ULSD might be a small cause but I don't think it would be the main reason. It might be that you are now "use to" to the more power the truck has and it doesn't seem like it once did......if it was the exhaust I would think you would notice it right away, not later down the road, but just my 2 cents, here is a bump for you!