What's more important?

Sledheadxp800r

That was only my tow tune
Dec 13, 2010
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I'm sure they're going to be awesome pumps but I just don't have the cash flow to buy them this year.
 
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madmatt

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Apr 12, 2009
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Thats the retail on a II 150% pump or dodge 220% pump. but These exergy pumps are going on a few high profile pullers this season in place of II or WD pumps

I sent a couple modded pumps to be tested here a while back to see what they actually flowed,,, without telling the shop what they were, who built them or anything,,, and the results i got back were pretty sad to say the least,,,,,
 

quadracer37

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Mar 31, 2009
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I sent a couple modded pumps to be tested here a while back to see what they actually flowed,,, without telling the shop what they were, who built them or anything,,, and the results i got back were pretty sad to say the least,,,,,

Exactly why I went with triple stock pumps. Built pumps are way over rated and over priced IMO. Unless its coming off a Bosch test bench I wouldn't spend that kind of money.
 

madmatt

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yep these were done on a bosch test bench. this company is actually started to do their own modded pumps in house and used these for comparison. I dont wanna start a pissing match here by naming any names but one company's 100+ % over pumps flowed less the this Exergy's , which they rate i believe at 30-40% over pump and the place who tested them now has a 30% that flowed nearly as much as this 100+ pump and it's a lot less money
 

Kennedy Diesel

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Mar 13, 2009
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I'm sure they're going to be awesome pumps but I just don't have the cash flow to buy them this year.

I'd suggest doing the valley pump with a big one. I have a pair of Wicked level 3's and some very healthy injectors and no issues keeping up with rail psi with just a set of Kennedy Twin lift pumps and billet pickup.
 

TheBac

Why do I keep doing this?
Staff member
Apr 19, 2008
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I was told by an "expert" that the way the duramax main caps are bolted in, that a girdle is not needed.

The caps will move if the engine is pushed extremely hard, even with a stock turbo. Seen that firsthand. Adding that girdle on a major build sure cant hurt.