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Old 04-12-2007, 09:35 PM   #1
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ok I got a local place where I can get a mandrel bent 2.5 DP for cheap. will I lose any low end when coupled with pems and a high flow cat?
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Old 04-12-2007, 09:45 PM   #2
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Marginal.

You'll gain a decent amount of midrange and top end power.
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Old 04-12-2007, 09:56 PM   #3
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Go with the PEM'* for sure, otherwise that DP won't make a lot of difference. The two together will be a good combination.

I'd personally hold off on the CAT for now. You have the same cat as an L67. Think about that.
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Old 04-12-2007, 09:57 PM   #4
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so for 150 it is a worth while expense for the mandrel bent DP the piping and all the flanges and removing the resonator. I guess I should mention that I am in the mountains so since it would flow better I could feel it in the buttdyno even here
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Old 04-12-2007, 09:58 PM   #5
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I personally think you'll regret removing the resonator.
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Old 04-12-2007, 10:13 PM   #6
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Quote:
Originally Posted by willwren
I personally think you'll regret removing the resonator.
I personally love the sound of toastys car so that is why I am thinking of removing it. as for the cat I think it might be clogged because my milage has taken a dump so I am thinking the pems and the DP will help at the very least and not hurt me. A o2 sensor will go in the same time so I figure all of that should help power and mileage. She just turned over 100k so I figure the o2 is toast and that is part of the mileage thing
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Old 04-12-2007, 10:39 PM   #7
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Quote:
Originally Posted by willwren
I personally think you'll regret removing the resonator.
We have more than a couple members here running 2000+ Bonnevilles without a resonator and stock muffs; and i have heard no real complaints.

If he were to go with aftermarket mufflers, then no, i would not remove the resonator
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Old 04-12-2007, 10:49 PM   #8
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is the 1/8" of a difference worth it to you?

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granted the pipe does get a little smaller, and kinks a little funny.. but IMO a 2.5 would not be worth it..
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Old 04-12-2007, 11:11 PM   #9
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well toasty I got a setup of flo pro vforce muffs not stockers I want it louder though so I might get something smaller to get it louder. I want power and sound but it seems like that is hard to do. as for you haro I think getting the kinks out at the least would be worth it
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Old 04-13-2007, 08:57 AM   #10
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The 2.5 inch will be an improvement for sure over the stock DP; i think it is a much better plan to go with a 2.5 than a 3" especially on Greg'* L36. The 3" is WAY too much on the L36

Greg; if you still want it louder i would look into possibly getting an aftermarket resonator. But the first step may be to just remove the OEM one, then go back and get a high flow resonator installed if it ends up being too raspy or have too much drone for you. Keep us posted on what you do and how you like it
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