Air dog 2 vs Fass titanium

05str6.0ker · Jan 21, 2014

I'm sure that this has been asked 1,000 times but i havent been able to find what I'm looking for. I havent been able to do alot of research on this yet because I'm at work but I'm wanting to know everyones thoughts on the two. I'm able to buy a baisically brand new fass titanium for failry cheap but i have heard quite a few bad things about the fass. should I shell out the little bit extra for the new airdog or get the used fass? Thanks for any help.

1fastTRX · Jan 21, 2014

I'd skip both. I've blown the small oring on the regulator twice now. This caused huge pressure drop at WOT. The first time a piece of oring went into the gerotor and locked up the motor. Had the truck towed home. I got a replacement pump and tore the original one down to find what I did. The second oring lasted a week (HNBR type oring is supposed to be diesel safe). I'll try the viton oring next, but either way the pump is pretty damned loud too. I vote for building yourself a fuel system that has a better track record

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Monster12valve · Jan 21, 2014

X2 on build your own setup.

JGman141 · Jan 21, 2014

X3 they both suck

loboost · Jan 21, 2014

I'm all for an a1000 setup...

Dennis @ strictly recommends the fass systems for daily trucks iirc

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slc dzl · Jan 21, 2014

Call and talk to Dennis @ strictly.
He is the one I got my white trucks fuel system through and I couldn't be happier.

farmin powerstroke · Jan 21, 2014

Look into a fuel lab they make a very good product.

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05str6.0ker · Jan 21, 2014

How much would building your own cost? What all goes into it?

Mach5customs · Jan 22, 2014

I am pretty close to doing a fuel system and I have been kicking around the idea of a 6.4 to supply the stock pump just because of the story's I have been reading about fass and air dog.

Mdub707 · Jan 22, 2014

Mach5customs said:
I am pretty close to doing a fuel system and I have been kicking around the idea of a 6.4 to supply the stock pump just because of the story's I have been reading about fass and air dog.

Exactly. If I was on a budget, I'd be doing the 6.4 stocker feeding the 6.0 stocker and sumped.

If I want to spend a little more or for a bigger build... sump, custom filter setup, fuelab pump, direct feed to the heads.

Mach5customs · Jan 22, 2014

Sorry for high jacking the thread but do you think a sumped 6.4 pump feeding the stock pump would handle a stage 2 turbo and 175/75 injectors? Thanks

loboost · Jan 22, 2014

Mach5customs said:
Sorry for high jacking the thread but do you think a sumped 6.4 pump feeding the stock pump would handle a stage 2 turbo and 175/75 injectors? Thanks

A regulated return and a healthy hfcm would handle those no problem.

But to answer your question... yes. A 6.4 lpfp feeding the hfcm would be more than enough

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swinky · Jan 22, 2014

loboost said:
A regulated return and a healthy hfcm would handle those no problem.

But to answer your question... yes. A 6.4 lpfp feeding the hfcm would be more than enough

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What about 190/75s. You get my pm loboost?

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loboost · Jan 22, 2014

swinky said:
What about 190/75s. You get my pm loboost?

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Yes with a sump feeding the lpfp it should do fine.

I haven't looked. I'll go check it

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Mach5customs · Jan 22, 2014

Well since this thread had changed to the 6.4 or stock system whats the best way to set it up? I am putting in new injectors ASAP and I am on the fence about 175/75's or 190/75's with a stage 2 barder turbo. If I installed a regulated return and a sump would I need to install completely new lines. And would the stock pump work or would a 6.4 pump feeding the stock pump be my best bet? I am really just trying to put together a reliable system. Thanks guys

loboost · Jan 22, 2014

Mach5customs said:
Well since this thread had changed to the 6.4 or stock system whats the best way to set it up? I am putting in new injectors ASAP and I am on the fence about 175/75's or 190/75's with a stage 2 barder turbo. If I installed a regulated return and a sump would I need to install completely new lines. And would the stock pump work or would a 6.4 pump feeding the stock pump be my best bet? I am really just trying to put together a reliable system. Thanks guys

Stock hfcm with regulated return would suffice for 175s.

Whether or not you keep OEM lines depends on if you're going to add some filters under the truck and do away with the upper filter

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DZL JIM · Jan 24, 2014

With 175/75 in mine, stock hfcm and reg return, my fuel psi would drop like a rock on a hard acceleration. Upgraded the pump and draw straw, aftermarket pre-pump filter, and now it only drops a few psi. All stock fuel lines.