Fuel Pins Denny T VS Bully Dog?

[chico_mustangs]

I currently have a Bully Dog on my 93 but have been reading up and see that most of you guys have a Denny T unit. I noticed that the curves are completely different on both and it seems like a nicer curve. Is the reason people like it because its cheaper then the Bully Dog? Would you think it would be a wise purchase? I just would hate to change mine out for a Denny T unit and get the same or less power. I am still pretty new to the Cummins family but would like to make her better then factory.

Thanks!!!

[peobryant]

The DennyT cone is much more aggressive than the Bully Dog cone, and it will fuel more than the Bully Dog as well. I have my DennyT cone in for quite a while, and it made the truck way more enjoyable to drive than stock. I think the DennyT cone is the best one on the market, and it's cheaper than most others as well.

[cumminz90]

I had a old smoky pin in the 93 w250 which i believe (correct me if im wrong guys ) is some what simalar to the bully dog and i changed it out with a denny t stage II and it made a big difference in the seat of pants feeling hope this helps

[Lucas]

pdr pin works




but if you have the skills do it yourself

[peobryant]

pdr pin works




but if you have the skills do it yourself

A ground stock cone won't be as aggressive as a DennyT. Plus, a nice clean stock cone makes for a nice present.

[burnt_servo]

pdr pin works




but if you have the skills do it yourself

A ground stock cone won't be as aggressive as a DennyT. Plus, a nice clean stock cone makes for a nice present.

that depends , on the vw pumps i've been playing with you can grind the stock fuel cone to the limit of the fuel pins travel .

being able to grind deeper into the cone than the pin can travel doesn't gain you anything .

the question is , on a cummins pump , does the fuel pin have a larger range of travel than a vw pump ?

[Ace]

being able to grind deeper into the cone than the pin can travel doesn't gain you anything.

I thought that usually gained you a leak into the AFC. Oh yeah right, not actually what most would consider a "gain."

[dre95249]

Something I stumbled across....

http://cgi.ebay.com/ebaymotors/M-H-Inc- ... ccessories

[Richie O]

I have the M2.

[Ace]

I'm not exactly sure I understand the need for a deeply cut pin with little to no ramp. Seems to sorta negates the whole purpose of the AFC assembly itself. Why not just remove the spring and let the pin sit in the bottom of the hole?

[Lucas]

exactly. what i thought. iwas thinking why dont people just take it out.

I personally think all the performance gain is in our heads. i had the stock pin at the "deepest" setting and then changed to the pdr pin ....witch my trained injection pump rebuild buddy laughed at

all i noticed power/performance wise is that it would smoke like a bastard from idle to WOT if i mashed it.

[chico_mustangs]

What do you guys think of me taking my bully dog pin out and grinding it down closer to the denny T pin?

[rebel horseman]

What do you guys think of me taking my bully dog pin out and grinding it down closer to the denny T pin?

You'll never get the same performance out of a ground stocker as you would out of a DennyT pin. IMO, just spend the $120 and be done with it.

I personally think all the performance gain is in our heads. i had the stock pin at the "deepest" setting and then changed to the pdr pin ....witch my trained injection pump rebuild buddy laughed at

all i noticed power/performance wise is that it would smoke like a bastard from idle to WOT if i mashed it.

When I swapped out my stocker to the DennyT pin I got a very noticeable gain in power. Before the change my max boost was around 18-19 and after it went to 21-22 psi, and it seemed to get there much quicker too. EGTs also went up slightly since i was flowing more #2 to the sticks.

[Richie O]

exactly. what i thought. iwas thinking why dont people just take it out.

I personally think all the performance gain is in our heads. i had the stock pin at the "deepest" setting and then changed to the pdr pin ....witch my trained injection pump rebuild buddy laughed at

all i noticed power/performance wise is that it would smoke like a bastard from idle to WOT if i mashed it.

I had a gain of 7 psi boost when I switched from a stock pin. Its about the ability to tune your afc. I have big 6x16's and I needed a pin with less fuel at low boost. No way would I ever take my afc out with big injectors.

[ford69557ci]

I ran 435's and 6x18's with no afc and a 64 71 16 s300. With a 5spd and 3.54's I could drive it normal and not make a drop of smoke or I could lay into it and stop traffic. It all depends on the right foot with no afc. Without the afc I never could clear up the smoke without the use of a lot of happy gas.